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WO2019103283A1 - Hot water preheating and supercooling heat pump system using temperature stratification-type hot water tank - Google Patents

Hot water preheating and supercooling heat pump system using temperature stratification-type hot water tank Download PDF

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Publication number
WO2019103283A1
WO2019103283A1 PCT/KR2018/009419 KR2018009419W WO2019103283A1 WO 2019103283 A1 WO2019103283 A1 WO 2019103283A1 KR 2018009419 W KR2018009419 W KR 2018009419W WO 2019103283 A1 WO2019103283 A1 WO 2019103283A1
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WO
WIPO (PCT)
Prior art keywords
hot water
temperature
heat exchanger
heat
preheating
Prior art date
Application number
PCT/KR2018/009419
Other languages
French (fr)
Korean (ko)
Inventor
유병기
Original Assignee
(주)유천써모텍
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Publication date
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Publication of WO2019103283A1 publication Critical patent/WO2019103283A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D20/0039—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material with stratification of the heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0271—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/042—Temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/06—Heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention relates to a hot water preheating and supercooling heat pump system using a temperature stratification type hot water tank, and more particularly, Layered hot water tank for improving the efficiency of the hot water preheating and supercooling heat pump system.
  • the heat pump system includes a compressor, a condenser, an evaporator, and an expansion valve.
  • the heat pump system absorbs or discharges heat by circulating the heat medium to supply cooling / heating and cold / hot water, and temporarily supplies hot water.
  • a heat pump system having a de-superheater 15 (referred to as an over-heat reducing or hot water heat exchanger) for supplying hot water H in an emergency, A compressor 13, a condenser, an evaporator, and an expansion valve 14.
  • the refrigerant absorbs or releases heat through a phase change of circulating refrigerant to supply cold / hot water or cooling / heating.
  • a de-superheater 15 is provided to supply hot water H as instantaneously heating water using high-temperature high-pressure hot gas supplied from the compressor 13.
  • Such de-superheater 15 The present invention is effective in supplying cooling water and hot water H at the same time or supplying hot water H in case of heating, The heat exchanging efficiency at the side of the second heat exchanger 12 operated by the condenser is largely deteriorated.
  • the de-superheater 15 primarily exchanges heat at a relatively low temperature
  • a high pressure is generated as the temperature is increased to condense the heat medium to be condensed.
  • the heating medium for supplying the hot water (H) by the de-superheater 15 is supplied to the second heat exchanger (12) And the remaining 70% of the surplus energy source is discharged from the first heat exchanger 11 through the heat exchange with the heat source S such as the underground heat, thereby wasting the energy source .
  • the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a device for preheating hot water using surplus energy, thereby reducing the waste of energy source and circulating the heat medium in a supercooled state. And the temperature distribution in the stratified tank and the heating state can be improved by a simple sensing structure and a flow rate control structure.
  • the hot water preheating and the supercooling heat Pump system can be improved by a simple sensing structure and a flow rate control structure.
  • a heat pump system including a compressor (33), a condenser, an expansion valve (34) and an evaporator interconnected by a circulation line (20) through which a heating medium is circulated;
  • a first heat exchanger 31 connected to the circulation line 20 and adapted to operate as the condenser or the evaporator during cooling or heating operation and to perform heat exchange with the heat source S side including geothermal heat and air heat, Wow;
  • a second heat exchanger (32) corresponding to the first heat exchanger (31) and adapted to operate as an evaporator or a condenser, and connected to the load (R) side by a load supply line (22) to supply cooling and heating;
  • the hot water supply line 23 extends to a predetermined length, A de-superheater 35 adapted to be heated;
  • Layered hot water tank which is provided as a single tank for storing hot water heated by the de-superheater 35 and is filled with high-temperature water having a temperature difference from low-temperature water on the lower side of the tank to the upper side of the tank, (40);
  • the hot water supply line 40 is positioned such that a heating medium is continuously passed through the hot water supply line 40.
  • the low temperature water supplied from the lower side of the temperature stratification type hot water tank 40 is preheated through heat exchange with the heat medium,
  • a hot water preheating and supercooling heat pump system using a hot water tank preheating and supercooling heat exchanger (37) connected in series to the dehydrator (35) by a hot water tank (23).
  • the lower side or the outlet side of the temperature stratification type hot water tank 40 is provided with a low temperature side temperature sensor 41 for sensing the temperature of the low temperature water;
  • the hot water supply line 23 is provided to operate when the temperature sensed by the low temperature side temperature sensor 41 is lower than a predetermined temperature and the temperature of the low temperature water at the outlet side of the hot water preheating and supercooling heat exchanger 37
  • the hot water supply side flow valve (44) is connected to the hot water supply side hot water supply tank (40).
  • the first heat exchanger (31) is provided at a side of the first heat exchanger (31) to operate when the temperature sensed by the low temperature temperature sensor (41)
  • a heat source side temperature sensor 45 for detecting the inlet or outlet side temperature and a heat source side flow rate control means 46 for controlling the circulation amount of the heat source S according to the temperature sensed by the heat source side temperature sensor 45 ) Is connected to the hot-water preheating and supercooling heat pump system using the temperature stratified-type hot water tank.
  • the hot water preheating and supercooling heat exchanger 37 are positioned between the first heat exchanger 31 and the second heat exchanger 32, the surplus energy of the heating medium Is preheated by the hot water preheating and supercooling heat exchanger (37) to preheat the water in the hot water supply process or to supercool the heating medium, so that the device can be operated efficiently.
  • the present invention is characterized in that the hot-water tank 40 for storing hot water heated by the de-superheater 35 is provided, so that low-temperature water and high-temperature water are distributed vertically by a single tank, There is an advantage that a compact system can be realized as compared with a structure in which a plurality of tank structures for separately charging high-temperature water are provided.
  • the present invention is characterized in that the hot water temperature sensor 43 and the hot water temperature valve 44 are provided on the hot water supply line 23 so that when the temperature of the low temperature water in the temperature stratification type hot water tank 40 is below a certain temperature,
  • the heating effect by the hot water preheating and supercooling heat exchanger 37 is enhanced by regulating the heat quantity by the hot water side temperature sensor 43 and the hot water side flow valve 44 and heat exchange is performed with the heating medium for the heating operation
  • the efficiency of the device can be improved by optimizing the state of the heat medium transferred to the other heat exchanger and the expansion valve 34 by the supercooling effect of the heat medium.
  • the heat source side temperature sensor 45 and the heat source side flow rate control means 46 are provided on the heat source supply line, when the low temperature water temperature in the temperature stratification type hot water tank 40 is the predetermined temperature or more, And the heat exchange with the heating medium due to the stop of the operation of the supercooling heat exchanger 37 is activated by the heat source S, thereby improving the operation efficiency of the apparatus.
  • FIG. 1 is a block diagram showing a conventional example
  • FIG. 2 is a block diagram showing a part of a configuration according to an embodiment of the present invention.
  • FIG. 3 is a block diagram showing another configuration according to an embodiment of the present invention.
  • FIG. 4 is a block diagram illustrating another configuration according to an embodiment of the present invention.
  • FIG. 5 is a flowchart showing an operating state of the present invention.
  • Figure 6 is a flow chart illustrating another operating state of the present invention.
  • FIG. 7 is a flowchart of another configuration according to the operating states of Figs. 5 and 6.
  • FIG. 8 is a flowchart showing another operating state of the present invention.
  • FIG. 9 is a flowchart showing another operation state of the present invention.
  • FIG. 2 to 9 show a preferred embodiment of the present invention.
  • a first heat exchanger 31, a second heat exchanger 32, a compressor 33, and an expansion valve 34 are connected to each other by a circulation line 20 through which a heating medium is circulated, Heat exchange is performed by the phase change of the heating medium to supply cooling and heating to the load R side and heat the hot water through the heat exchange with hot gas of high temperature and high pressure supplied from the compressor 33, A superheater 35 is provided to supply the superheater 35.
  • the first heat exchanger 31 is provided to increase the heat exchange efficiency by using various heat sources S such as geothermal heat, air heat, or waste heat.
  • various heat sources S such as geothermal heat, air heat, or waste heat.
  • the first heat exchanger 31 A heat source supply line 21 extending to the heat source S side can be connected and a heat exchange medium such as water or a brine is circulated on the heat source supply line 21 and heat exchanged by the first heat exchanger 31 .
  • the second heat exchanger 32 is connected to a load supply line 22 capable of supplying cold / hot water or cooling and heating.
  • a hot water supply line 23 for supplying the hot water H is connected to the de- And a switching valve 36 such as a four-way valve capable of switching the flow of the refrigerant is provided on the circulation line 20.
  • the switching valve 36 is connected to the first heat exchanger 31 or Hot water (or cooling / heating) is supplied by the first heat exchanger (31) or the second heat exchanger (32) operated by the evaporator or the condenser by switching the supply of the heating medium to the second heat exchanger (32) It will be possible.
  • the first heat exchanger 31 when hot water and heating are required in winter (in case of heating operation), the first heat exchanger 31 is operated as an evaporator, the second heat exchanger 32 is operated as a condenser, The first heat exchanger 31 is operated as a condenser and the second heat exchanger 32 is operated as an evaporator when cooling is required (in the case of cooling operation).
  • the hot water preheating and supercooling heat exchanger 37 is positioned between the first heat exchanger 31 and the second heat exchanger 32 on the circulation line 20, and the heating operation or the cooling operation
  • the check valve (47 ⁇ 50) and the expansion valve (34) for controlling the flow of the refrigerant are positioned. Details of the check valve and the operating state will be described with reference to FIG. 3 and FIG.
  • the second heat exchanger 32 supplies cooling or heating to the load R.
  • the second heat exchanger 32 is provided with a load
  • the supply line 22 is extended and the load supply line 22 is connected to the load R side directly or to the load R side via the de-superheater 35,
  • a plurality of open / close valves 51 to 54 may be provided on each of the branch lines 24 so as to control the open / close state thereof.
  • the de-superheater 35 may be composed of a main hot water heat exchanger 38 to which the circulation line 20 is connected and an auxiliary hot water heat exchanger 39 connected to the heating hot water heat exchanger 38 by the heating line 25,
  • the heating / cooling water used for the heating / cooling water is likely to be in a contaminated state such as rust due to repeated circulation of the load supply line 22. This is due to the difficulty of the user directly using hot water such as a shower, And the auxiliary hot water heat exchanger (39) are separately provided so that the heating and cooling water and hot water hot water are separated and heated.
  • the tank may be connected to the de-superheater 35 via a hot water supply line 23 in a state in which a predetermined amount of water is filled.
  • the de-superheater 35 is connected to the de- Layered hot water tank 40 that can be recharged in a heated state after being heated by the heater 40. This is because a certain layer of water having a different temperature distribution in a vertical direction is formed in a single tank And storing the low temperature water and the high temperature water in layers using the density difference of water according to the temperature.
  • a hot water supply pipe 56 is connected to the upper side of the temperature stratification type hot water tank 40 and a supply pipe 55 is connected to the lower side of the temperature stratification type hot water tank 40.
  • Side temperature sensor 41 and the high-temperature-side temperature sensor 42 for detecting and measuring the water temperature of the low-temperature water and the high-temperature water, respectively.
  • the de-superheater 35 and the hot water preheating and supercooling heat exchanger 37 are connected to the temperature stratification type hot water tank 40.
  • the hot water preheating and the supercooling heat exchanger 37 firstly preheat the hot water,
  • the hot water preheating and supercooling heat exchanger 37 is connected to the lower side of the temperature stratification type hot water tank 40 so that the low temperature water is connected
  • the de-superheater 35 is connected to the upper side so as to store the hot water into the temperature stratified hot water tank 40.
  • the hot water supply side temperature sensor 43 is provided on the hot water supply line 40 at the outlet side of the hot water preheating and supercooling heat exchanger 37 and the hot water side flow rate Valve 44 is provided so that it can be controlled to operate in accordance with the temperature sensed by the low temperature side temperature sensor 41 of the temperature stratified hot water tank 40.
  • the low-temperature water temperature in the temperature-stratified-type hot water tank 40 is 30 degrees or less, Is set to 40 degrees by the hot water temperature sensor (43) in accordance with a signal indicating that the temperature of the hot water is 30 degrees or less and the flow rate of the low temperature water is adjusted by the hot water side flow valve (44) And the low temperature water can be preheated to the supercooling heat exchanger 37 by 40 degrees.
  • the hot water preheating and supercooling heat exchanger 37 When the hot water preheating and supercooling heat exchanger 37 is operated to perform the heat exchange with the heating medium, the low temperature water can be preheated and supplied to the side of the superheater 35 as described above. In addition, the heat medium can be supercooled It is possible to suppress the occurrence of a high pressure and to improve the operation efficiency of the expansion valve 34 and the overall operation of the apparatus at the subsequent stage.
  • a heat source side temperature sensor for sensing the temperature of the heat source water at an inlet or an outlet side of the first heat exchanger Side heat source side temperature sensor 45 and a valve-shaped heat source side flow rate control means 46 for controlling the circulation amount of the heat source water according to the temperature sensed by the heat source side temperature sensor 45, Is set to operate at a constant temperature according to the temperature sensed by the low temperature side temperature sensor 41 of the temperature stratification type hot water tank 40.
  • the heat source supply line 21 need not be provided, and in the case of the heat source side flow control means 46 It is a matter of course that it can be provided as a blower capable of controlling the amount of air.
  • the heat source side temperature sensor 45 and the flow rate control means 46 increase the circulation amount of the heat source S such as the heat source or air amount to activate the degree of heat exchange in the first heat exchanger 31, 33). This is because it is not necessary to supply a hot water supply or the high temperature water of a desired degree is stored in the temperature and temperature stratification type hot water tank 40, When the heating is not required by the supercooling heat exchanger 35, heat exchange is not performed in the hot water supply and supercool heat exchanger 35, and the temperature or pressure state of the heat medium is supplied to the first heat exchanger 31 as described above, It is necessary to adjust it from the side.
  • FIG. 5 when the heating and the hot water supply are simultaneously performed, the heat medium supplied from the compressor 33 sequentially flows through the de-superheater 35 and the second heat exchanger 32, The heating medium having passed through the second heat exchanger 32 is supplied to the hot-water preheating and supercooling heat exchanger 37 through heat exchange, In this process, the supercooling of the heat medium is performed, and the subsequent heat medium flow passes through the expansion valve 34 and the first heat exchanger 31 and is returned to the compressor 33.
  • the flow of the heating medium is controlled such that the heating medium supplied from the compressor 33 first passes through the de-superheater 35,
  • the heat exchange with the heat medium is performed in the course of passing through the heat exchanger 31 and the hot water preheating and supercooling heat exchanger 37.
  • the minimum heat exchange is performed at the side of the first heat exchanger 31 by about 30% % In the hot water preheating and supercooling heat exchanger (37).
  • the heat medium flow is returned to the compressor 33 after supplying the cooling water through the expansion valve 34, the heat exchanging at the second heat exchanger 32 side, and the like.
  • the heating water and the hot water supply flow are such that the heating water on the load supply line 22 is heat-exchanged in the second heat exchanger 32 to the load R side
  • the hot water supplied from the hot-water tank 30 is supplied to the hot-water preheating / supercooling heat exchanger 37 and the de-superheater 35 continuously through preheating and main heating to produce hot water, .
  • the cooling water on the load supply line 22 is supplied to the load (R) side through heat exchange in the second heat exchanger (32)
  • the hot water supplied from the hot water tank 40 is continuously supplied to the hot water preheating and supercooling heat exchanger 37 and the de-superheater 35 through preheating and main heating to supply hot water.
  • the hot water temperature sensor 43 and the hot water supply side flow valve 44 are controlled in accordance with the low temperature water temperature in the temperature stratification type hot water tank 40, Alternatively, the heat source side temperature sensor 45 and the heat source side flow rate control means 46 can adjust the flow rate according to the set value of the constant temperature and perform the heat exchange under optimized conditions.
  • the heating medium supplied from the compressor 33 sequentially passes through the de-superheater 35 and the second heat exchanger 32 to supply the heating
  • the heat medium having passed through the second heat exchanger 32 passes through the hot water preheating and supercooling heat exchanger 37 and then passes through the expansion valve 34 and the first heat exchanger 31, (33).
  • the heating water flow can be supplied to the load R side in a process of continuously passing through the second heat exchanger 32 and the de-superheater 35 through the load supply line 22
  • the heat source side temperature sensor 45 and the flow rate sensor 45 are activated so that heat exchange with the heat source S side is activated at the first heat exchanger 31 side due to no heat exchange in the hot water preheating and supercooling heat exchanger 37. [ It is necessary to set and adjust the control means 46 properly.
  • the heat medium supplied from the compressor 33 passes through the de-superheater 35 as it is and flows through the first heat exchanger 31 to the heat medium
  • the cooling water is supplied to the second heat exchanger 32 through the heat exchanger 32 after passing through the hot water preheating and supercooling heat exchanger 37 and the expansion valve 34. At this time, It is not necessary to perform separate heat exchange in the de-super heater 35, the pre-heating preheating and the super-cooling heat exchanger 37 as the cooling is supplied through the heat exchanger 32 in the second heat exchanger 32.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The present invention relates to a hot water preheating and supercooling heat pump system using a temperature stratification-type hot water tank, which can preheat hot water and supercool a heat medium by using surplus energy in a process of operating the system, so as to remarkably improve efficiency of the system. According to the present invention, provided is a hot water preheating and supercooling heat pump system using a temperature stratification-type hot water tank, the system comprising: a desuperheater (35) configured to supply hot water (H) by means of a high-temperature and high-pressure heat medium supplied from a compressor (33); a temperature stratification-type hot water tank (40) configured to store high-temperature water heated by the desuperheater (35); and a hot water preheating and supercooling heat exchanger (37) configured to preheat low-temperature water by means of a heat exchange with a heat medium and to supply the water to the desuperheater (35).

Description

온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템Preheating and supercooling heat pump system using temperature stratified hot water tank
본 발명은 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템에 관한 것으로, 보다 상세하게는 시스템의 작동과정에서 열매체의 잉여에너지를 이용하여 급탕공급시에 물을 예열하거나 열매체를 과냉각시켜 장치의 효율을 개선하도록 된 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water preheating and supercooling heat pump system using a temperature stratification type hot water tank, and more particularly, Layered hot water tank for improving the efficiency of the hot water preheating and supercooling heat pump system.
일반적으로 히트펌프시스템은 압축기, 응축기, 증발기 그리고 팽창밸브를 포함하여 이루어져 열매체를 순환시킴에 따라 열을 흡수 또는 방출하여 냉난방과 냉온수를 기본적으로 공급함과 동시에 단시간 내에 일시적으로 온수를 생산하기 위한 급탕기능을 갖는 것인데, 이러한 종래의 히트펌프시스템을 도시된 도면에 의해 설명하면 다음과 같다.Generally, the heat pump system includes a compressor, a condenser, an evaporator, and an expansion valve. The heat pump system absorbs or discharges heat by circulating the heat medium to supply cooling / heating and cold / hot water, and temporarily supplies hot water The conventional heat pump system will be described with reference to the drawings.
도 1에 도시된 바와 같이, 긴급 상황에서 급탕(H)을 공급하기 위해 디슈퍼히터(15)(과열저감기 또는 급탕열교환기라 함)를 구비한 히트펌프시스템으로, 이는 통상적인 히트펌프의 구성인 압축기(13), 응축기, 증발기 그리고 팽창밸브(14)를 포함하여 이루어져 순환하는 냉매의 상변화를 통해 열을 흡수 또는 방출하여 냉온수 또는 냉난방을 공급하도록 된 것이다.As shown in Fig. 1, a heat pump system having a de-superheater 15 (referred to as an over-heat reducing or hot water heat exchanger) for supplying hot water H in an emergency, A compressor 13, a condenser, an evaporator, and an expansion valve 14. The refrigerant absorbs or releases heat through a phase change of circulating refrigerant to supply cold / hot water or cooling / heating.
이러한 구성에 더하여 압축기(13)로부터 공급되는 고온 고압의 핫가스를 이용하여 순간적으로 물을 가열함에 따라 급탕(H)을 공급하도록 된 디슈퍼히터(15)가 구비되는데, 이러한 디슈퍼히터(15)가 구비된 종래의 히트펌프시스템에 의해서는 냉방과 급탕(H)을 동시에 공급하거나 난방시에도 필요한 경우에 급탕(H)을 공급할 수 있다는 점에서 효과가 있는 것이기는 하나, 난방과 급탕(H)을 동시에 사용하는 경우에는 응축기로 작동되는 제2 열교환기(12) 측에서의 열교환 효율이 대폭적으로 떨어지는 문제점이 있을 뿐만 아니라 상기 디슈퍼히터(15)에서 1차적으로 열교환이 이루어져 상대적으로 낮은 온도를 통과되는 열매체를 응축하기 위해 온도를 높임에 따라 고압이 발생되는 문제점이 있는 것이다. In addition to the above configuration, a de-superheater 15 is provided to supply hot water H as instantaneously heating water using high-temperature high-pressure hot gas supplied from the compressor 13. Such de-superheater 15 The present invention is effective in supplying cooling water and hot water H at the same time or supplying hot water H in case of heating, The heat exchanging efficiency at the side of the second heat exchanger 12 operated by the condenser is largely deteriorated. In addition, there is a problem that the de-superheater 15 primarily exchanges heat at a relatively low temperature There is a problem that a high pressure is generated as the temperature is increased to condense the heat medium to be condensed.
한편 냉방과 급탕(H)을 동시에 공급하는 경우에는 상기 디슈퍼히터(15)에 의해 급탕(H)을 공급하는 열매체는 응축기로 작동되는 상기 제2 열교환기(12) 측에서 에너지원의 30% 정도를 소비하고, 나머지 70%의 잉여에너지원을 제1 열교환기(11) 측에서 지중열과 같은 열원(S)과의 열교환을 통해 에너지를 방출함으로 인해 에너지원의 낭비가 발생되는 문제점이 있는 것이다.On the other hand, when cooling and hot water supply (H) are simultaneously supplied, the heating medium for supplying the hot water (H) by the de-superheater 15 is supplied to the second heat exchanger (12) And the remaining 70% of the surplus energy source is discharged from the first heat exchanger 11 through the heat exchange with the heat source S such as the underground heat, thereby wasting the energy source .
또한 급탕(H)이 없는 냉방전용의 장치일 경우에도 상기 디슈퍼히터(15)의 작동이 정지된 상태로 구비됨에 따라, 운전모드에 따라 구성의 일부가 정지된 상태가 되어 시스템의 전체적인 성적계수나 효율을 증대시키는 데에 활용도가 떨어지는 단점이 있는 것이다.In addition, even in the case of an apparatus dedicated to cooling without hot water H, since the operation of the de-superheater 15 is stopped, a part of the configuration is stopped according to the operation mode, But there is a drawback in that it is less useful for increasing efficiency.
본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 본 발명은 잉여에너지를 이용하여 급탕예열이 가능하도록 장치를 구성함에 따라 에너지원의 낭비를 줄이고, 열매체를 과냉각시킨 상태로 순환시킴에 따라 장치의 효율을 대폭적으로 개선할 수 있는 시스템을 제공하며, 간단한 감지구조와 유량조절 구조에 의해 성층형탱크 내의 온도분포나 가열상태를 개선할 수 있도록 된 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a device for preheating hot water using surplus energy, thereby reducing the waste of energy source and circulating the heat medium in a supercooled state. And the temperature distribution in the stratified tank and the heating state can be improved by a simple sensing structure and a flow rate control structure. The hot water preheating and the supercooling heat Pump system.
본 발명의 특징에 따르면, 열매체가 순환되는 순환라인(20)에 의해 상호 연결되는 압축기(33), 응축기, 팽창밸브(34) 및 증발기를 포함하는 히트펌프시스템에 있어서;According to a feature of the present invention, there is provided a heat pump system including a compressor (33), a condenser, an expansion valve (34) and an evaporator interconnected by a circulation line (20) through which a heating medium is circulated;
상기 순환라인(20) 상에 연결되어 냉방 또는 난방운전시에 상기 응축기 또는 증발기로 작동되도록 구비되고, 지열이나 공기열을 포함한 열원(S) 측과의 열교환이 이루어지도록 된 제1 열교환기(31)와;A first heat exchanger 31 connected to the circulation line 20 and adapted to operate as the condenser or the evaporator during cooling or heating operation and to perform heat exchange with the heat source S side including geothermal heat and air heat, Wow;
상기 제1 열교환기(31)에 대응되어 증발기 또는 응축기로 작동되도록 구비되고, 냉난방을 공급하도록 부하공급라인(22)에 의해 부하(R) 측에 연결되는 제2 열교환기(32)와;A second heat exchanger (32) corresponding to the first heat exchanger (31) and adapted to operate as an evaporator or a condenser, and connected to the load (R) side by a load supply line (22) to supply cooling and heating;
상기 순환라인(20) 상에 연결되어 상기 압축기(33)로부터 공급되는 고온 고압의 열매체와의 열교환이 이루어지도록 구비되고, 일정 길이로 연장되는 급탕공급라인(23)에 의해 급탕(H)을 공급하도록 된 디슈퍼히터(35)와;And is connected to the circulation line 20 so as to perform heat exchange with the high-temperature and high-pressure heat medium supplied from the compressor 33. The hot water supply line 23 extends to a predetermined length, A de-superheater 35 adapted to be heated;
상기 디슈퍼히터(35)에 의해 가열된 고온수를 저장하도록 된 단일의 탱크로 구비되되, 탱크 하부측의 저온수와는 온도차를 갖는 고온수를 탱크의 상부측으로 충전하도록 된 온도성층형 급탕탱크(40)와;Layered hot water tank which is provided as a single tank for storing hot water heated by the de-superheater 35 and is filled with high-temperature water having a temperature difference from low-temperature water on the lower side of the tank to the upper side of the tank, (40);
상기 제1 열교환기(31)와 제2 열교환기(32) 사이에 위치되도록 상기 순환라인(20) 상에 직렬로 연결되어 상기 제1 열교환기(31) 또는 제2 열교환기(32)를 통과한 열매체가 연속적으로 통과되도록 위치되며, 상기 온도성층형 급탕탱크(40)의 하부측으로부터 공급되는 저온수를 열매체와의 열교환을 통해 예열하여 상기 디슈퍼히터(35) 측으로 공급하도록 상기 급탕공급라인(23)에 의해 상기 디슈퍼히터(35)에 직렬로 연결된 급탕예열 및 과냉각 열교환기(37)를 포함하는 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템이 제공된다.Is connected in series on the circulation line (20) so as to be positioned between the first heat exchanger (31) and the second heat exchanger (32) and passes through the first heat exchanger (31) or the second heat exchanger The hot water supply line 40 is positioned such that a heating medium is continuously passed through the hot water supply line 40. The low temperature water supplied from the lower side of the temperature stratification type hot water tank 40 is preheated through heat exchange with the heat medium, There is provided a hot water preheating and supercooling heat pump system using a hot water tank preheating and supercooling heat exchanger (37) connected in series to the dehydrator (35) by a hot water tank (23).
본 발명의 다른 특징에 따르면, 상기 온도성층형 급탕탱크(40)의 하부측 또는 출구측에는 저온수의 온도를 감지하도록 된 저온측 온도센서(41)가 구비되고;According to another aspect of the present invention, the lower side or the outlet side of the temperature stratification type hot water tank 40 is provided with a low temperature side temperature sensor 41 for sensing the temperature of the low temperature water;
상기 급탕공급라인(23) 상에는 상기 저온측 온도센서(41)에 의해 감지된 온도가 일정 온도 이하일 때에 작동하도록 구비되되, 상기 급탕예열 및 과냉각 열교환기(37)의 출구측에서 저온수의 온도를 감지하도록 된 급탕측 온도센서(43)와, 상기 급탕예열 및 과냉각 열교환기(37)의 입구측에 위치되어 상기 급탕측 온도센서(43)에 의해 감지된 온도에 따라 저온수의 순환량을 조절하도록 된 급탕측 유량밸브(44)가 연결된 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템이 제공된다.The hot water supply line 23 is provided to operate when the temperature sensed by the low temperature side temperature sensor 41 is lower than a predetermined temperature and the temperature of the low temperature water at the outlet side of the hot water preheating and supercooling heat exchanger 37 A temperature sensor 43 for detecting the temperature of the hot water supplied from the hot water supply side temperature sensor 43 and a temperature sensor 43 disposed at the inlet side of the hot water preheating and supercooling heat exchanger 37 to adjust the circulating amount of the low temperature water according to the temperature sensed by the hot water temperature sensor 43 And the hot water supply side flow valve (44) is connected to the hot water supply side hot water supply tank (40).
본 발명의 또 다른 특징에 따르면, 상기 제1 열교환기(31) 측에는 상기 저온측 온도센서(41)에 의해 감지된 온도가 일정 온도 이상일 때에 작동하도록 구비되되, 상기 제1 열교환기(31)의 입구 또는 출구측 온도를 감지하도록 된 열원측 온도센서(45)와, 상기 열원측 온도센서(45)에 의해 감지된 온도에 따라 열원(S)의 순환량을 조절하도록 된 열원측 유량제어수단(46)이 연결된 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템이 제공된다.According to another aspect of the present invention, the first heat exchanger (31) is provided at a side of the first heat exchanger (31) to operate when the temperature sensed by the low temperature temperature sensor (41) A heat source side temperature sensor 45 for detecting the inlet or outlet side temperature and a heat source side flow rate control means 46 for controlling the circulation amount of the heat source S according to the temperature sensed by the heat source side temperature sensor 45 ) Is connected to the hot-water preheating and supercooling heat pump system using the temperature stratified-type hot water tank.
이상에서와 같이 본 발명에 의하면, 상기 제1 열교환기(31)와 제2 열교환기(32) 사이에 급탕예열 및 과냉각 열교환기(37)가 위치됨에 따라, 시스템의 작동과정에서 열매체의 잉여에너지를 상기 급탕예열 및 과냉각 열교환기(37)에 의해 급탕과정에서의 물을 예열하거나 열매체를 과냉각시켜 장치의 효율적인 작동이 가능한 장점이 있다. As described above, according to the present invention, since the hot water preheating and supercooling heat exchanger 37 are positioned between the first heat exchanger 31 and the second heat exchanger 32, the surplus energy of the heating medium Is preheated by the hot water preheating and supercooling heat exchanger (37) to preheat the water in the hot water supply process or to supercool the heating medium, so that the device can be operated efficiently.
또한 본 발명은 디슈퍼히터(35)에 의해 가열된 고온수를 저장하는 온도성층형 급탕탱크(40)가 구비됨에 따라, 단일의 탱크에 의해 저온수와 고온수를 상하로 분포시켜 저온수와 고온수를 개별적으로 충전하는 복수개의 탱크구조로 구비되는 것에 비해 컴팩트한 시스템을 구현할 수 있는 장점이 있다.Further, the present invention is characterized in that the hot-water tank 40 for storing hot water heated by the de-superheater 35 is provided, so that low-temperature water and high-temperature water are distributed vertically by a single tank, There is an advantage that a compact system can be realized as compared with a structure in which a plurality of tank structures for separately charging high-temperature water are provided.
또한 본 발명은 급탕공급라인(23) 상에 급탕측 온도센서(43)와 급탕측 유량밸브(44)가 구비됨에 따라, 온도성층형 급탕탱크(40) 내의 저온수 온도가 일정 온도 이하일 때에 상기 급탕측 온도센서(43)와 급탕측 유량밸브(44)에 의해 예열량을 조절하여 상기 급탕예열 및 과냉각 열교환기(37)에 의한 가열효과를 높임과 동시에 가열작동을 위한 열매체와의 열교환이 이루어짐에 따른 열매체의 과냉각 효과에 의해 다른 열교환기나 팽창밸브(34)로 전달되는 열매체의 상태를 최적화시켜 장치의 작동효율을 높일 수 있는 장점이 있다.The present invention is characterized in that the hot water temperature sensor 43 and the hot water temperature valve 44 are provided on the hot water supply line 23 so that when the temperature of the low temperature water in the temperature stratification type hot water tank 40 is below a certain temperature, The heating effect by the hot water preheating and supercooling heat exchanger 37 is enhanced by regulating the heat quantity by the hot water side temperature sensor 43 and the hot water side flow valve 44 and heat exchange is performed with the heating medium for the heating operation The efficiency of the device can be improved by optimizing the state of the heat medium transferred to the other heat exchanger and the expansion valve 34 by the supercooling effect of the heat medium.
또한 본 발명은 열원공급라인 상에 열원측 온도센서(45)와 열원측 유량제어수단(46)이 구비됨에 따라, 온도성층형 급탕탱크(40) 내의 저온수 온도가 일정 온도 이상일 때에 상기 급탕예열 및 과냉각 열교환기(37)의 작동이 정지됨에 따른 열매체와의 열교환을 열원(S)에 의해 활성화시켜 장치의 작동효율을 높일 수 있는 장점이 있다.In the present invention, since the heat source side temperature sensor 45 and the heat source side flow rate control means 46 are provided on the heat source supply line, when the low temperature water temperature in the temperature stratification type hot water tank 40 is the predetermined temperature or more, And the heat exchange with the heating medium due to the stop of the operation of the supercooling heat exchanger 37 is activated by the heat source S, thereby improving the operation efficiency of the apparatus.
도 1은 종래의 일례를 도시한 구성도1 is a block diagram showing a conventional example
도 2는 본 발명의 일실시예에 따른 구성의 일부를 도시한 구성도2 is a block diagram showing a part of a configuration according to an embodiment of the present invention.
도 3은 본 발명의 일실시예에 따른 다른 구성을 도시한 구성도3 is a block diagram showing another configuration according to an embodiment of the present invention.
도 4는 본 발명의 일실시예에 따른 또 다른 구성을 도시한 구성도4 is a block diagram illustrating another configuration according to an embodiment of the present invention.
도 5는 본 발명의 작동상태를 도시한 흐름도5 is a flowchart showing an operating state of the present invention.
도 6은 본 발명의 다른 작동상태를 도시한 흐름도Figure 6 is a flow chart illustrating another operating state of the present invention.
도 7은 도 5와 도 6의 작동상태에 따른 다른 구성의 흐름도7 is a flowchart of another configuration according to the operating states of Figs. 5 and 6. Fig.
도 8은 본 발명의 또 다른 작동상태를 도시한 흐름도8 is a flowchart showing another operating state of the present invention.
도 9는 본 발명의 또 다른 작동상태를 도시한 흐름도9 is a flowchart showing another operation state of the present invention.
상술한 본 발명의 목적, 특징들 및 장점은 다음의 상세한 설명을 통하여 보다 분명해질 것이다. 이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다.The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
도 2 내지 도9는 본 발명의 바람직한 실시예를 도시한 것이다. 도 2에 도시된 바와 같이, 본 발명은 열매체가 순환되는 순환라인(20)에 의해 제1 열교환기(31), 제2 열교환기(32), 압축기(33) 그리고 팽창밸브(34)가 상호 연결되어 열매체의 상변화에 의해 열교환이 이루어져 부하(R) 측에 냉난방을 공급하고, 상기 압축기(33)로부터 공급되는 고온 고압의 핫가스와의 열교환을 통해 신속하게 물을 가열하여 급탕(H)을 공급하도록 디슈퍼히터(35)가 구비된 것이다.2 to 9 show a preferred embodiment of the present invention. 2, a first heat exchanger 31, a second heat exchanger 32, a compressor 33, and an expansion valve 34 are connected to each other by a circulation line 20 through which a heating medium is circulated, Heat exchange is performed by the phase change of the heating medium to supply cooling and heating to the load R side and heat the hot water through the heat exchange with hot gas of high temperature and high pressure supplied from the compressor 33, A superheater 35 is provided to supply the superheater 35. [
구체적으로, 상기 제1 열교환기(31)는 지열이나 공기열 또는 폐수열 등과 같은 다양한 형태의 열원(S)을 이용하여 열교환 효율을 증대시킬 수 있도록 구비되는데, 이를 위해 상기 제1 열교환기(31)에는 열원(S) 측으로 연장되는 열원공급라인(21)이 연결될 수 있고, 이 열원공급라인(21) 상에는 물 또는 브라인(brine)과 같은 열교환매체가 순환되면서 상기 제1 열교환기(31)에 의해 열교환이 이루어지도록 되어 있다.Specifically, the first heat exchanger 31 is provided to increase the heat exchange efficiency by using various heat sources S such as geothermal heat, air heat, or waste heat. For this purpose, the first heat exchanger 31 A heat source supply line 21 extending to the heat source S side can be connected and a heat exchange medium such as water or a brine is circulated on the heat source supply line 21 and heat exchanged by the first heat exchanger 31 .
또한 상기 제2 열교환기(32)에는 냉온수 또는 냉난방을 공급할 수 있도록 된 부하공급라인(22)이 연결되고, 상기 디슈퍼히터(35) 측에는 급탕(H)을 공급하기 위한 급탕공급라인(23)이 연결되며, 상기 순환라인(20) 상에는 냉매의 흐름을 절환할 수 있는 사방밸브와 같은 절환밸브(36)가 구비되는데, 상기 절환밸브(36)에 의해서는 상기 제1 열교환기(31) 또는 제2 열교환기(32) 측에 우선적으로 열매체를 공급하도록 절환시킴에 따라 증발기 또는 응축기로 작동되는 상기 제1 열교환기(31) 또는 제2 열교환기(32)에 의해 냉온수(또는 냉난방)을 공급할 수 있도록 된 것이다. The second heat exchanger 32 is connected to a load supply line 22 capable of supplying cold / hot water or cooling and heating. A hot water supply line 23 for supplying the hot water H is connected to the de- And a switching valve 36 such as a four-way valve capable of switching the flow of the refrigerant is provided on the circulation line 20. The switching valve 36 is connected to the first heat exchanger 31 or Hot water (or cooling / heating) is supplied by the first heat exchanger (31) or the second heat exchanger (32) operated by the evaporator or the condenser by switching the supply of the heating medium to the second heat exchanger (32) It will be possible.
구체적으로는, 겨울철에 온수와 난방이 필요한 경우(난방운전일 경우)에는 상기 제1 열교환기(31)는 증발기로 작동되고, 상기 제2 열교환기(32)는 응축기로 작동되며, 여름철에 냉수 또는 냉방이 필요할 경우(냉방운전일 경우)에는 상기 제1 열교환기(31)는 응축기로 작동되고, 상기 제2 열교환기(32)는 증발기로 작동되게 된다.Specifically, when hot water and heating are required in winter (in case of heating operation), the first heat exchanger 31 is operated as an evaporator, the second heat exchanger 32 is operated as a condenser, The first heat exchanger 31 is operated as a condenser and the second heat exchanger 32 is operated as an evaporator when cooling is required (in the case of cooling operation).
한편, 상기 순환라인(20) 상에는 제1 열교환기(31)와 제2 열교환기(32) 사이에 급탕예열 및 과냉각 열교환기(37)가 위치되고, 그 전단 또는 후단에 난방운전 또는 냉방운전에 따라 냉매의 흐름을 제어하는 체크밸브(47~50) 및 팽창밸브(34)가 위치되는데, 이에 세부적인 구성과 작동상태 등을 도 3과 도 4에 의해 설명하면 다음과 같다.On the other hand, the hot water preheating and supercooling heat exchanger 37 is positioned between the first heat exchanger 31 and the second heat exchanger 32 on the circulation line 20, and the heating operation or the cooling operation The check valve (47 ~ 50) and the expansion valve (34) for controlling the flow of the refrigerant are positioned. Details of the check valve and the operating state will be described with reference to FIG. 3 and FIG.
도 3에 도시된 바와 같이, 상기 제2 열교환기(32)에 의해서는 부하(R) 측에 냉방이나 난방을 공급하게 되는데, 이를 위해 상기 제2 열교환기(32) 상에는 냉난방수가 흐르도록 된 부하공급라인(22)이 연장 형성되고, 상기 부하공급라인(22)은 부하(R) 측에 직접적으로 연결되거나 상기 디슈퍼히터(35)를 통하여 부하(R) 측에 연결되도록 단일의 라인 또는 복수의 분기라인(24)으로 형성될 수 있고, 각 분기라인(24) 상에는 다수의 개폐밸브(51~54)가 구비되어 그 개폐상태를 제어하도록 구비될 수 있는 것이다. As shown in FIG. 3, the second heat exchanger 32 supplies cooling or heating to the load R. To this end, the second heat exchanger 32 is provided with a load The supply line 22 is extended and the load supply line 22 is connected to the load R side directly or to the load R side via the de-superheater 35, And a plurality of open / close valves 51 to 54 may be provided on each of the branch lines 24 so as to control the open / close state thereof.
또한 상기 디슈퍼히터(35)는 순환라인(20)이 연결되는 메인급탕열교환기(38)와 이에 히팅라인(25)으로 연결되는 보조급탕열교환기(39)로 이루어질 수 있는데, 이는 통상적으로 냉난방용으로 사용되는 냉난방수는 부하공급라인(22)을 반복 순환됨에 따라 녹물과 같은 오염상태가 되기 쉬운데 이를 사용자가 직접적으로 샤워 등의 온수로 사용하기 어려움에 따른 것으로, 메인급탕열교환기(38)와 보조급탕열교환기(39)를 별도로 두어 냉난방수와 급탕온수를 구분하여 가열하도록 한 것이다.The de-superheater 35 may be composed of a main hot water heat exchanger 38 to which the circulation line 20 is connected and an auxiliary hot water heat exchanger 39 connected to the heating hot water heat exchanger 38 by the heating line 25, The heating / cooling water used for the heating / cooling water is likely to be in a contaminated state such as rust due to repeated circulation of the load supply line 22. This is due to the difficulty of the user directly using hot water such as a shower, And the auxiliary hot water heat exchanger (39) are separately provided so that the heating and cooling water and hot water hot water are separated and heated.
또한 상기 디슈퍼히터(35) 측에는 급탕온수를 저장하도록 된 탱크가 연결될 수 있는데, 이 탱크는 일정량의 물을 충전한 상태로 상기 급탕공급라인(23)을 통해 공급하여 상기 디슈퍼히터(35)에 의해 가열된 후에, 가열된 상태의 고온수를 다시 충전할 수 있도록 된 온도성층형 급탕탱크(40)로, 이는 단일의 탱크 내에 상하방향으로 온도분포를 달리하는 물을 일정층을 형성하여 동시에 저장이 가능하도록 한 것으로, 온도에 따른 물의 밀도차를 이용하여 저온수와 고온수를 층상으로 저장하는 것이다.The tank may be connected to the de-superheater 35 via a hot water supply line 23 in a state in which a predetermined amount of water is filled. The de-superheater 35 is connected to the de- Layered hot water tank 40 that can be recharged in a heated state after being heated by the heater 40. This is because a certain layer of water having a different temperature distribution in a vertical direction is formed in a single tank And storing the low temperature water and the high temperature water in layers using the density difference of water according to the temperature.
이러한 온도성층형 급탕탱크(40)에는 하부측에 공급배관(55)이 연결됨과 동시에 상부측에 급탕배관(56)이 연결되고, 물의 유출입시에 안정적이면서도 균일한 유출이 가능하도록 노즐(57,58)이 구비되며, 상하부 일측에는 각각 저온수와 고온수의 물온도를 감지 및 측정하도록 된 저온측 온도센서(41)와 고온측 온도센서(42)가 구비된 것이다. A hot water supply pipe 56 is connected to the upper side of the temperature stratification type hot water tank 40 and a supply pipe 55 is connected to the lower side of the temperature stratification type hot water tank 40. In order to stably and uniformly discharge the water, Side temperature sensor 41 and the high-temperature-side temperature sensor 42 for detecting and measuring the water temperature of the low-temperature water and the high-temperature water, respectively.
이러한 온도성층형 급탕탱크(40)에는 상기 디슈퍼히터(35)와 급탕예열 및 과냉각 열교환기(37)가 연결되고, 상기 급탕예열 및 과냉각 열교환기(37)에 의해 1차로 예열한 후에 상기 디슈퍼히터(35)에 의해 원하는 온도의 고온수를 생산하게 되는데, 이를 위해 상기 급탕예열 및 과냉각 열교환기(37)는 상기 온도성층형 급탕탱크(40)의 하부측에 연결되어 저온수가 공급되도록 연결되고, 상기 디슈퍼히터(35)는 상부측에 연결되어 고온수를 온도성층형 급탕탱크(40) 내로 저장하도록 연결되게 된다.The de-superheater 35 and the hot water preheating and supercooling heat exchanger 37 are connected to the temperature stratification type hot water tank 40. The hot water preheating and the supercooling heat exchanger 37 firstly preheat the hot water, The hot water preheating and supercooling heat exchanger 37 is connected to the lower side of the temperature stratification type hot water tank 40 so that the low temperature water is connected And the de-superheater 35 is connected to the upper side so as to store the hot water into the temperature stratified hot water tank 40.
또한 상기 급탕공급라인(40) 상에는 급탕예열 및 과냉각 열교환기(37)의 출구측에 급탕측 온도센서(43)가 구비되고, 상기 급탕예열 및 과냉각 열교환기(37)의 입구측에 급탕측 유량밸브(44)가 구비되는데, 이는 상기 온도성층형 급탕탱크(40)의 저온측 온도센서(41)에 의해 감지된 온도에 따라 작동되도록 제어될 수 있는 것이다.The hot water supply side temperature sensor 43 is provided on the hot water supply line 40 at the outlet side of the hot water preheating and supercooling heat exchanger 37 and the hot water side flow rate Valve 44 is provided so that it can be controlled to operate in accordance with the temperature sensed by the low temperature side temperature sensor 41 of the temperature stratified hot water tank 40. [
예를 들면, 50도 정도의 고온수를 급탕(H)으로 제공하고자 하는데 상기 온도성층형 급탕탱크(40) 내의 저온수 온도가 30도 이하라면, 상기 저온측 온도센서(41)에 의해 저온수의 온도가 30도 이하임을 감지한 신호에 따라 상기 급탕측 온도센서(43)에 의해 40도로 셋팅하여 상기 급탕측 유량밸브(44)에 의해 저온수의 유량을 조절하여 공급함에 따라 상기 급탕예열 및 과냉각 열교환기(37)에 저온수를 40도로 예열할 수 있도록 한 것이다. For example, if it is desired to provide high-temperature water of about 50 degrees as hot water (H), if the low-temperature water temperature in the temperature-stratified-type hot water tank 40 is 30 degrees or less, Is set to 40 degrees by the hot water temperature sensor (43) in accordance with a signal indicating that the temperature of the hot water is 30 degrees or less and the flow rate of the low temperature water is adjusted by the hot water side flow valve (44) And the low temperature water can be preheated to the supercooling heat exchanger 37 by 40 degrees.
한편 상기 온도성층형 급탕탱크(40) 내의 저온수 온도가 30도 이상인 경우에는 상기 급탕예열 및 과냉각 열교환기(37)에 의한 예열효과가 미미하므로, 상기 급탕측 유량밸브(44)에 의해 공급량을 조절할 필요가 없을 뿐만 아니라 상기 급탕예열 및 과냉각 열교환기(37)를 거칠 필요가 없음으로 인해 상기 디슈퍼히터(35) 측으로 저온수를 직접적으로 공급하게 되는데, 이를 위해 상기 급탕공급라인(23) 상에는 상기 급탕예열 및 과냉각 열교환기(37)를 우회하도록 된 우회급탕라인(24)이 연결되고, 이 우회급탕라인(26) 상에 별도의 개폐밸브(59)가 구비되게 된다.On the other hand, when the low-temperature water temperature in the temperature-stratified-type hot water tank 40 is 30 degrees or more, the effect of preheating by the hot water preheating and supercooling heat exchanger 37 is insignificant. Temperature water is directly supplied to the de-superheater 35 side due to the fact that it is not necessary to adjust the temperature of the de-superheater 35 and the temperature of the de-superheater 35 is not required to pass through the hot water preheating and supercooling heat exchanger 37. To this end, A separate bypass hot water supply line 24 for bypassing the hot water preheating and supercooling heat exchanger 37 is connected and an additional on-off valve 59 is provided on the bypass hot water supply line 26.
여기에서 상기 급탕예열 및 과냉각 열교환기(37)를 작동시켜 열매체와의 열교환이 이루어지면 전술된 바와 같이 저온수를 예열하여 디슈퍼히터(35) 측으로 공급할 수 있을 뿐만 아니라 열교환 과정에서 열매체를 과냉각시킬 수 있음에 따라 고압발생 등을 억제하여 후단의 팽창밸브(34)나 장치 전체적인 작동효율을 개선할 수 있게 된다.When the hot water preheating and supercooling heat exchanger 37 is operated to perform the heat exchange with the heating medium, the low temperature water can be preheated and supplied to the side of the superheater 35 as described above. In addition, the heat medium can be supercooled It is possible to suppress the occurrence of a high pressure and to improve the operation efficiency of the expansion valve 34 and the overall operation of the apparatus at the subsequent stage.
한편 도 4에 도시된 바와 같이, 상기 제1 열교환기(31)에 연결되는 열원공급라인(21) 상에는 상기 제1 열교환기의 입구 또는 출구측에서 열원수의 온도를 감지하도록 된 열원측 온도센서(45)와, 상기 열원측 온도센서(45)에 의해 감지된 온도에 따라 열원수의 순환량을 조절하도록 된 밸브형태의 열원측 유량제어수단(46)이 연결된 것으로, 상기 열원측 온도센서(45)는 상기 온도성층형 급탕탱크(40)의 저온측 온도센서(41)에 의한 감지온도에 따라 일정한 온도를 설정하여 작동하도록 된 것이다.As shown in FIG. 4, on the heat source supply line 21 connected to the first heat exchanger 31, a heat source side temperature sensor for sensing the temperature of the heat source water at an inlet or an outlet side of the first heat exchanger Side heat source side temperature sensor 45 and a valve-shaped heat source side flow rate control means 46 for controlling the circulation amount of the heat source water according to the temperature sensed by the heat source side temperature sensor 45, Is set to operate at a constant temperature according to the temperature sensed by the low temperature side temperature sensor 41 of the temperature stratification type hot water tank 40.
여기에서, 상기 제1 열교환기(31) 측에는 열원(S)이 공기열 등으로 연결되는 경우에는 상기 열원공급라인(21)이 구비될 필요가 없고, 상기 열원측 유량제어수단(46)의 경우에도 공기량을 조절할 수 있는 블로어로 구비될 수 있음은 당연한 것이다.In the case where the heat source S is connected to the first heat exchanger 31 by air heat or the like, the heat source supply line 21 need not be provided, and in the case of the heat source side flow control means 46 It is a matter of course that it can be provided as a blower capable of controlling the amount of air.
이러한 열원측 온도센서(45)와 유량제어수단(46)에 의해서는 열원수나 공기량 등의 열원(S)의 순환량을 늘려 제1 열교환기(31)에서의 열교환 정도를 활성화시키고, 이에 의해 압축기(33) 측으로 회수되는 열매체의 온도와 압력을 낮추어 압축과정이 원활하게 이루어지도록 하기 위한 것으로, 이는 급탕을 공급할 필요가 없거나 상기 온도성층형 급탕탱크(40) 내에 원하는 정도의 고온수가 저장되어 상기 급탕 및 과냉각 열교환기(35)에 의해 가열이 필요하지 않은 경우에 상기 급탕 및 과냉각 열교환기(35)에서 열교환을 행하지 않음에 따라 전술된 바와 같이 열매체의 온도나 압력상태를 상기 제1 열교환기(31) 측에서 조절해 줄 필요가 있는 것이기 때문이다. The heat source side temperature sensor 45 and the flow rate control means 46 increase the circulation amount of the heat source S such as the heat source or air amount to activate the degree of heat exchange in the first heat exchanger 31, 33). This is because it is not necessary to supply a hot water supply or the high temperature water of a desired degree is stored in the temperature and temperature stratification type hot water tank 40, When the heating is not required by the supercooling heat exchanger 35, heat exchange is not performed in the hot water supply and supercool heat exchanger 35, and the temperature or pressure state of the heat medium is supplied to the first heat exchanger 31 as described above, It is necessary to adjust it from the side.
이와 같은 본 발명의 구성에 따른 세부적인 작동상태를 도 5 내지 도 9에 의해 설명하면 다음과 같다. 도 5에 도시된 바와 같이, 난방과 급탕을 동시에 공급하는 경우에 열매체의 흐름은 압축기(33)로부터 공급되는 열매체가 디슈퍼히터(35)와 제2 열교환기(32)를 순차적으로 거치면서 급탕과 난방을 공급하게 되는데, 이때에 상기 제 2 열교환기(32)를 통과한 열매체는 상기 급탕예열 및 과냉각 열교환기(37)에서 열교환을 통해 상기 온도성층형 급탕탱크(40)로부터 공급되는 저온수를 예열하게 되고, 이 과정에서 열매체의 과냉각이 이루어지게 되며, 이후의 열매체 흐름은 상기 팽창밸브(34)와 제1 열교환기(31)를 거쳐 압축기(33)로 복귀하는 과정을 거치게 된다.The details of the operation according to the present invention will be described with reference to FIGS. 5 to 9. FIG. 5, when the heating and the hot water supply are simultaneously performed, the heat medium supplied from the compressor 33 sequentially flows through the de-superheater 35 and the second heat exchanger 32, The heating medium having passed through the second heat exchanger 32 is supplied to the hot-water preheating and supercooling heat exchanger 37 through heat exchange, In this process, the supercooling of the heat medium is performed, and the subsequent heat medium flow passes through the expansion valve 34 and the first heat exchanger 31 and is returned to the compressor 33.
또한 도 6에 도시된 바와 같이, 냉방과 급탕을 동시에 공급하는 경우에 열매체의 흐름은 압축기(33)로부터 공급되는 열매체가 우선적으로 상기 디슈퍼히터(35)를 통과한 후에, 상기 제1 열교환기(31)와 급탕예열 및 과냉각 열교환기(37)를 순차적으로 거치는 과정에서 열매체와의 열교환이 이루어지는데, 이때에 상기 제1 열교환기(31) 측에서 대략 30% 정도로 최소한의 열교환이 이루어져 나머지 70%를 급탕예열 및 과냉각 열교환기(37)에서 열교환이 이루어지게 된다. 이후의 열매체 흐름은 팽창밸브(34)를 거쳐 제2 열교환기(32) 측에서 열교환을 통해 냉방을 공급한 후에 압축기(33)로 복귀하게 된다.6, when the cooling and the hot water supply are simultaneously performed, the flow of the heating medium is controlled such that the heating medium supplied from the compressor 33 first passes through the de-superheater 35, The heat exchange with the heat medium is performed in the course of passing through the heat exchanger 31 and the hot water preheating and supercooling heat exchanger 37. At this time, the minimum heat exchange is performed at the side of the first heat exchanger 31 by about 30% % In the hot water preheating and supercooling heat exchanger (37). Subsequently, the heat medium flow is returned to the compressor 33 after supplying the cooling water through the expansion valve 34, the heat exchanging at the second heat exchanger 32 side, and the like.
또한 도 7에 도시된 바와 같이, 난방과 급탕을 동시에 공급하는 경우에 난방수와 급탕흐름은 부하공급라인(22) 상의 난방수가 제2 열교환기(32)에서 열교환을 통해 부하(R) 측에 공급되고, 온도성층형 급탕탱크(40)로부터 공급되는 저온수를 급탕예열 및 과냉각 열교환기(37)와 디슈퍼히터(35)를 연속적으로 거친 예열과 본가열을 통해 고온수를 생산하여 급탕을 공급하게 된다.7, when the heating and the hot water supply are simultaneously performed, the heating water and the hot water supply flow are such that the heating water on the load supply line 22 is heat-exchanged in the second heat exchanger 32 to the load R side The hot water supplied from the hot-water tank 30 is supplied to the hot-water preheating / supercooling heat exchanger 37 and the de-superheater 35 continuously through preheating and main heating to produce hot water, .
한편, 냉방과 급탕을 동시에 공급하는 경우에 냉방수와 급탕공급 흐름은 상기 부하공급라인(22) 상의 냉방수가 제2 열교환기(32)에서 열교환을 통해 부하(R) 측에 공급되고, 온도성층형 급탕탱크(40)로부터 공급되는 저온수를 급탕예열 및 과냉각 열교환기(37)와 디슈퍼히터(35)를 연속적으로 거친 예열과 본가열을 통해 고온수를 생산하여 급탕을 공급하게 된다.On the other hand, when cooling and hot water supply are simultaneously performed, the cooling water on the load supply line 22 is supplied to the load (R) side through heat exchange in the second heat exchanger (32) The hot water supplied from the hot water tank 40 is continuously supplied to the hot water preheating and supercooling heat exchanger 37 and the de-superheater 35 through preheating and main heating to supply hot water.
이와 같은 냉방과 급탕 또는 난방과 급탕을 동시에 공급하는 경우에는 전술된 바와 같이 상기 온도성층형 급탕탱크(40) 내의 저온수 온도에 따라 상기 급탕측 온도센서(43)와 급탕측 유량밸브(44) 또는 열원측 온도센서(45)와 열원측 유량제어수단(46)에 의해 일정 온도의 설정값에 따라 유량을 조절하여 최적화된 조건으로 열교환이 이루어질 수 있게 된다.In the case where the cooling and hot water supply or the heating and hot water supply are simultaneously performed, the hot water temperature sensor 43 and the hot water supply side flow valve 44 are controlled in accordance with the low temperature water temperature in the temperature stratification type hot water tank 40, Alternatively, the heat source side temperature sensor 45 and the heat source side flow rate control means 46 can adjust the flow rate according to the set value of the constant temperature and perform the heat exchange under optimized conditions.
한편, 도 8에 도시된 바와 같이, 난방만을 단독으로 공급하는 경우에는 압축기(33)로부터 공급되는 열매체가 디슈퍼히터(35)와 제2 열교환기(32)를 순차적으로 거치면서 난방을 공급하게 되는데, 이때에 상기 제 2 열교환기(32)를 통과한 열매체는 상기 급탕예열 및 과냉각 열교환기(37)를 그대로 통과한 후에, 상기 팽창밸브(34)와 제1 열교환기(31)를 거쳐 압축기(33)로 복귀하게 된다.8, when only the heating is supplied alone, the heating medium supplied from the compressor 33 sequentially passes through the de-superheater 35 and the second heat exchanger 32 to supply the heating The heat medium having passed through the second heat exchanger 32 passes through the hot water preheating and supercooling heat exchanger 37 and then passes through the expansion valve 34 and the first heat exchanger 31, (33).
이때에 난방수의 흐름은 부하공급라인(22)을 통해 상기 제2 열교환기(32)와 디슈퍼히터(35)를 연속적으로 통과하는 과정에서 효율이 우수한 난방을 부하(R) 측에 공급할 수 있고, 상기 급탕예열 및 과냉각 열교환기(37)에서 열교환이 이루어지지 않음에 따라 상기 제1 열교환기(31) 측에서 열원(S) 측과의 열교환이 활성화되도록 열원측 온도센서(45)와 유량제어수단(46)를 적절하게 설정 및 조절할 필요가 있는 것이다.At this time, the heating water flow can be supplied to the load R side in a process of continuously passing through the second heat exchanger 32 and the de-superheater 35 through the load supply line 22 And the heat source side temperature sensor 45 and the flow rate sensor 45 are activated so that heat exchange with the heat source S side is activated at the first heat exchanger 31 side due to no heat exchange in the hot water preheating and supercooling heat exchanger 37. [ It is necessary to set and adjust the control means 46 properly.
또한 도 9에 도시된 바와 같이, 냉방만을 단독으로 공급하는 경우에는 열매체의 흐름은 압축기(33)로부터 공급되는 열매체가 상기 디슈퍼히터(35)를 그대로 통과하여 제1 열교환기(31)에서 열매체와의 열교환이 이루어진 후에, 급탕예열 및 과냉각 열교환기(37)와 팽창밸브(34)를 거쳐 제2 열교환기(32)에서 열교환을 통해 냉방을 공급하는 것으로, 이때에 냉방수의 흐름은 상기 제2 열교환기(32)에서 열교환을 통해 냉방을 공급함에 따라 상기 디슈퍼히터(35)나 급탕예열 및 과냉각 열교환기(37)에서는 별도의 열교환이 이루어질 필요가 없는 것이다.9, in the case where only the cooling is supplied alone, the heat medium supplied from the compressor 33 passes through the de-superheater 35 as it is and flows through the first heat exchanger 31 to the heat medium The cooling water is supplied to the second heat exchanger 32 through the heat exchanger 32 after passing through the hot water preheating and supercooling heat exchanger 37 and the expansion valve 34. At this time, It is not necessary to perform separate heat exchange in the de-super heater 35, the pre-heating preheating and the super-cooling heat exchanger 37 as the cooling is supplied through the heat exchanger 32 in the second heat exchanger 32.
이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명백할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

Claims (3)

  1. 열매체가 순환되는 순환라인(20)에 의해 상호 연결되는 압축기(33), 응축기, 팽창밸브(34) 및 증발기를 포함하는 히트펌프시스템에 있어서;1. A heat pump system comprising a compressor (33), a condenser, an expansion valve (34) and an evaporator interconnected by a circulation line (20) through which a heating medium is circulated;
    상기 순환라인(20) 상에 연결되어 냉방 또는 난방운전시에 상기 응축기 또는 증발기로 작동되도록 구비되고, 지열이나 공기열을 포함한 열원(S) 측과의 열교환이 이루어지도록 된 제1 열교환기(31)와;A first heat exchanger 31 connected to the circulation line 20 and adapted to operate as the condenser or the evaporator during cooling or heating operation and to perform heat exchange with the heat source S side including geothermal heat and air heat, Wow;
    상기 제1 열교환기(31)에 대응되어 증발기 또는 응축기로 작동되도록 구비되고, 냉난방을 공급하도록 부하공급라인(22)에 의해 부하(R) 측에 연결되는 제2 열교환기(32)와;A second heat exchanger (32) corresponding to the first heat exchanger (31) and adapted to operate as an evaporator or a condenser, and connected to the load (R) side by a load supply line (22) to supply cooling and heating;
    상기 순환라인(20) 상에 연결되어 상기 압축기(33)로부터 공급되는 고온 고압의 열매체와의 열교환이 이루어지도록 구비되고, 일정 길이로 연장되는 급탕공급라인(23)에 의해 급탕(H)을 공급하도록 된 디슈퍼히터(35)와;And is connected to the circulation line 20 so as to perform heat exchange with the high-temperature and high-pressure heat medium supplied from the compressor 33. The hot water supply line 23 extends to a predetermined length, A de-superheater 35 adapted to be heated;
    상기 디슈퍼히터(35)에 의해 가열된 고온수를 저장하도록 된 단일의 탱크로 구비되되, 탱크 하부측의 저온수와는 온도차를 갖는 고온수를 탱크의 상부측으로 충전하도록 된 온도성층형 급탕탱크(40)와;Layered hot water tank which is provided as a single tank for storing hot water heated by the de-superheater 35 and is filled with high-temperature water having a temperature difference from low-temperature water on the lower side of the tank to the upper side of the tank, (40);
    상기 제1 열교환기(31)와 제2 열교환기(32) 사이에 위치되도록 상기 순환라인(20) 상에 직렬로 연결되어 상기 제1 열교환기(31) 또는 제2 열교환기(32)를 통과한 열매체가 연속적으로 통과되도록 위치되며, 상기 온도성층형 급탕탱크(40)의 하부측으로부터 공급되는 저온수를 열매체와의 열교환을 통해 예열하여 상기 디슈퍼히터(35) 측으로 공급하도록 상기 급탕공급라인(23)에 의해 상기 디슈퍼히터(35)에 직렬로 연결된 급탕예열 및 과냉각 열교환기(37)를 포함하는 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템.Is connected in series on the circulation line (20) so as to be positioned between the first heat exchanger (31) and the second heat exchanger (32) and passes through the first heat exchanger (31) or the second heat exchanger The hot water supply line 40 is positioned such that a heating medium is continuously passed through the hot water supply line 40. The low temperature water supplied from the lower side of the temperature stratification type hot water tank 40 is preheated through heat exchange with the heat medium, And a superheating and supercooling heat exchanger (37) connected in series to the de-superheater (35) by a superheater (23).
  2. 제1항에 있어서, 상기 온도성층형 급탕탱크(40)의 하부측 또는 출구측에는 저온수의 온도를 감지하도록 된 저온측 온도센서(41)가 구비되고;2. The apparatus according to claim 1, further comprising: a low-temperature-side temperature sensor (41) for sensing the temperature of the low-temperature water at a lower side or an outlet side of the temperature-stratified-type hot water tank (40);
    상기 급탕공급라인(23) 상에는 상기 저온측 온도센서(41)에 의해 감지된 온도가 일정 온도 이하일 때에 작동하도록 구비되되, 상기 급탕예열 및 과냉각 열교환기(37)의 출구측에서 저온수의 온도를 감지하도록 된 급탕측 온도센서(43)와, 상기 급탕예열 및 과냉각 열교환기(37)의 입구측에 위치되어 상기 급탕측 온도센서(43)에 의해 감지된 온도에 따라 저온수의 순환량을 조절하도록 된 급탕측 유량밸브(44)가 연결된 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템.The hot water supply line 23 is provided to operate when the temperature sensed by the low temperature side temperature sensor 41 is lower than a predetermined temperature and the temperature of the low temperature water at the outlet side of the hot water preheating and supercooling heat exchanger 37 A temperature sensor 43 for detecting the temperature of the hot water supplied from the hot water supply side temperature sensor 43 and a temperature sensor 43 disposed at the inlet side of the hot water preheating and supercooling heat exchanger 37 to adjust the circulating amount of the low temperature water according to the temperature sensed by the hot water temperature sensor 43 And the hot water supply side flow valve (44) is connected to the hot water supply side hot water tank.
  3. 제2항에 있어서, 상기 제1 열교환기(31) 측에는 상기 저온측 온도센서(41)에 의해 감지된 온도가 일정 온도 이상일 때에 작동하도록 구비되되, 상기 제1 열교환기(31)의 입구 또는 출구측 온도를 감지하도록 된 열원측 온도센서(45)와, 상기 열원측 온도센서(45)에 의해 감지된 온도에 따라 열원(S)의 순환량을 조절하도록 된 열원측 유량제어수단(46)이 연결된 것을 특징으로 하는 온도성층형 급탕탱크를 이용한 급탕예열 및 과냉각 히트펌프시스템.The heat exchanger (31) according to claim 2, wherein the first heat exchanger (31) is provided to operate when the temperature sensed by the low temperature side temperature sensor (41) And a heat source side flow rate control means 46 for controlling the circulation amount of the heat source S according to the temperature sensed by the heat source side temperature sensor 45 is connected Wherein the hot-water preheating and supercooling heat pump system using the temperature stratified-type hot water tank is characterized in that the hot-water preheating and supercooling heat pump system are used.
PCT/KR2018/009419 2017-11-21 2018-08-16 Hot water preheating and supercooling heat pump system using temperature stratification-type hot water tank WO2019103283A1 (en)

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