CN106468465B - Winter energy recovery refrigerating system and refrigerating method thereof - Google Patents
Winter energy recovery refrigerating system and refrigerating method thereof Download PDFInfo
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- CN106468465B CN106468465B CN201510524399.8A CN201510524399A CN106468465B CN 106468465 B CN106468465 B CN 106468465B CN 201510524399 A CN201510524399 A CN 201510524399A CN 106468465 B CN106468465 B CN 106468465B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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Abstract
The invention relates to a winter energy recovery refrigeration system, which comprises an outdoor heat release circulation system, an indoor heat absorption circulation system and an anti-freezing circulation system; the outdoor heat release circulating system is connected with the indoor heat absorption circulating system and the anti-freezing circulating system. The method comprises starting the air cooler and the water pump of the water pump branch when the outdoor temperature controller detects that the outdoor temperature is less than or equal to-10 ℃; and simultaneously, the first electric turbine butterfly valve is opened, the second electric turbine butterfly valve is closed, the refrigerant pump drives the medium in the water tank to perform heat exchange with the outdoor low-temperature refrigerant medium through the secondary inlet of the second plate heat exchanger, and the cooled medium returns to the water tank for standby through the secondary outlet of the second plate heat exchanger. During the use period in winter, the water chilling unit does not need to participate in the system operation for 3-4 months, so that the consumption of vulnerable parts of the water chilling unit is greatly delayed, and the service life of the whole water chilling unit is prolonged.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an energy recovery system capable of maximally utilizing outdoor temperature in winter and reducing cost for conveying a cold source and a refrigeration method thereof.
Background
Industrial production is increasingly strong, rapid governments in development vigorously promote energy conservation and emission reduction, various industrial enterprises are advocated to save energy and reduce emission, an original refrigeration system has a small energy consumption for electric energy, and if energy-saving equipment is utilized, the energy consumption can be greatly reduced, so that the operation cost and the energy consumption can be reduced.
The use of low temperature outdoor air to provide cooling to the indoor side has received attention from researchers and engineers in the industry and has been the subject of various forms of engineering research. The existing refrigerating system mainly cools and cools a medium required by a user by a water chiller, but the electric power of a compressor of the water chiller is large and accounts for about 70% of the whole refrigerating system, and the water chiller needs to be operated all year round under the condition that the external environment temperature in the northeast region is low, so that the power consumption is large, the service life is limited, the replacement frequency of vulnerable parts is increased, and the maintenance cost is invisibly increased.
Disclosure of Invention
The invention aims to provide an energy recovery system for conveying a cold source by using outdoor temperature in winter and a refrigeration method thereof, so as to overcome the defects.
The technical scheme adopted by the invention for realizing the purpose is as follows: the winter energy recovery refrigeration system comprises an outdoor heat release circulation system, an indoor heat absorption circulation system and an anti-freezing circulation system; the outdoor heat release circulating system is connected with the indoor heat absorption circulating system and the anti-freezing circulating system.
The outdoor heat release circulating system comprises an air cooler, a water pump branch, an indoor temperature controller and an expansion water tank; an inlet of the air cooler is connected with an outlet of the indoor heat absorption circulating system through a water pump branch, and an outlet of the air cooler is connected with an inlet of the indoor heat absorption circulating system; a first indoor temperature controller and a water pressure gauge are arranged on a pipeline connecting an air cooler inlet and a water pump branch; and a second indoor temperature controller and an expansion water tank are arranged on a pipeline connecting the outlet of the air cooler and the inlet of the indoor heat absorption circulating system.
The water pump branch comprises a first turbine butterfly valve, a Y-shaped filter, an external circulating water pump and a second turbine butterfly valve which are sequentially connected; the first turbine butterfly valve is connected with an outlet of the indoor heat absorption circulating system, and the second turbine butterfly valve is connected with an inlet of the air cooler.
The water pump branches are two and are connected in parallel.
The indoor heat absorption circulating system comprises a first plate heat exchanger, an electric turbine butterfly valve and a third indoor temperature controller; a primary inlet of the first plate heat exchanger is used as an inlet of an indoor heat absorption circulating system and is connected with an outlet of an air cooler, a primary outlet of the first plate heat exchanger is used as an outlet of the indoor heat absorption circulating system and is connected with a branch of a water pump, and a secondary inlet and a secondary outlet of the first plate heat exchanger are respectively connected with an outlet and an inlet of a water chilling unit; a third indoor temperature controller is arranged on a pipeline connecting the secondary outlet and the outlet of the water chilling unit; a freezing pump arranged at the outlet of the water tank is connected to a pipeline connecting the secondary inlet with the inlet of the water chilling unit; a second electric turbine butterfly valve is arranged on a pipeline connecting the freezing pump and the water chilling unit, and a first electric turbine butterfly valve is arranged on a pipeline connecting the freezing pump and the water chilling unit; turbine butterfly valves are arranged outside the primary inlet and the secondary inlet of the first plate heat exchanger.
The anti-freezing circulation system comprises a second plate heat exchanger and an electromagnetic valve; a primary inlet and a primary outlet of the second plate heat exchanger are respectively connected to two ends of a second turbine butterfly valve in the water pump branch circuit through the turbine butterfly valve; the secondary inlet and outlet are respectively connected with the steam inlet and outlet through a gate valve; and a solenoid valve is arranged on a pipeline between the gate valve outside the secondary outlet and the steam inlet.
The winter energy recovery refrigeration method comprises the following steps:
when the outdoor temperature controller detects that the outdoor temperature is less than or equal to minus 10 degrees, the air cooler is started, the water pump of the water pump branch is started, and the refrigerant medium circulates in the outdoor heat release circulating system; and simultaneously, the first electric turbine butterfly valve is opened, the second electric turbine butterfly valve is closed, the refrigerant pump drives the medium in the water tank to perform heat exchange with the outdoor low-temperature refrigerant medium through the secondary inlet of the second plate heat exchanger, and the cooled medium returns to the water tank for standby through the secondary outlet of the second plate heat exchanger.
When the indoor temperature detected by the second indoor temperature controller is less than or equal to the target value, the fan in the air cooler stops running;
when the indoor temperature detected by the second indoor temperature controller is greater than the target value, the air cooler is started in a variable frequency mode; the second indoor temperature controller detects the temperature of the refrigerant medium in the primary inlet of the first plate heat exchanger in real time; when the temperature of the cold medium reaches +/-1 ℃ of the target value, the air cooler keeps the current variable frequency to operate;
a third indoor temperature controller monitors whether the medium temperature reaches a set temperature in real time; if the medium temperature is higher than the set temperature, the electric turbine butterfly valve is started, and the water chilling unit is started to operate at 1/2 rated power; otherwise, the chiller is stopped and the electric turbine butterfly valve is closed.
When the second indoor temperature controller detects that the outdoor temperature is less than or equal to minus 20 ℃, the electromagnetic valve is started at set time intervals and the set time is kept, external steam flows through the secondary inlet of the second plate heat exchanger, is shunted by the outlet of the external circulating water pump in the outdoor heat release circulating system and enters the cold medium in the primary inlet of the second plate heat exchanger to exchange heat.
The invention has the following beneficial effects and advantages:
1. the invention can replace the original water chilling unit to work by exchanging heat with the medium in the indoor heat absorption circulating system through the cooling medium of the outdoor heat release circulating system and the medium in the indoor heat absorption circulating system without passing through the original water chilling unit under the condition of low external environment temperature, and can save 50-75% of electricity every day compared with the electricity consumption of the original water chilling unit during working.
2. The anti-freezing circulation system adopts steam heat exchange, prevents the frost cracking of the inside and the outside pipelines of the outdoor air cooler, and ensures the safe operation of the system used in winter.
3. The invention adopts the temperature controller to detect the temperature, and controls the water pump, the water chilling unit and the electric valve through the PLC, thereby realizing a full-automatic system for air cooling energy recovery.
4. During the use period in winter, the water chilling unit does not need to participate in the system operation for 3-4 months, so that the consumption of vulnerable parts of the water chilling unit is greatly delayed, and the service life of the whole water chilling unit is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
the system comprises an air cooler 1, a gate valve 2, an outdoor temperature controller 3, a first indoor temperature controller 4, a water pressure gauge 5, a turbine butterfly valve 6, a rubber joint 7, an external circulation water pump 8, a Y-shaped filter 9, a second indoor temperature controller 10, an expansion water tank 11, a first plate heat exchanger 12, a third indoor temperature controller 13, a primary refrigeration pump 14, a second electric turbine butterfly valve 15, a first electric turbine butterfly valve 16, a water chilling unit 17, a second plate heat exchanger 18 and an electromagnetic valve 19.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the invention discloses a system device suitable for recovering an outdoor cold source in winter in northern areas, wherein an air cooler absorbs the cold source and transmits media (brine, calcium chloride, alcohol, glycol and other secondary refrigerants) through a water pump to exchange heat with a plate heat exchanger to complete an outdoor heat release cycle; the other end of the plate heat exchanger is conveyed by a refrigerating pump of the refrigerator to a medium (water) to be cooled to not pass through the supercooled water unit to complete an indoor heat absorption cycle; the steam pipeline is connected with an outlet of the outdoor circulating water pump through another plate heat exchanger to complete an anti-freezing cycle. The whole system is divided into three areas, namely an outdoor heat release circulating system, an indoor heat absorption circulating system and an anti-freezing circulating system.
The outdoor heat release circulating system comprises an air cooler, an outdoor temperature controller, a water pump branch, a temperature sensor and an expansion water tank. The air cooler and the outdoor temperature controller are arranged outdoors, and the others are arranged indoors. The heat exchanger is a plate heat exchanger. The air cooler is a dry-type air cooler and adopts a pipe-penetrating fin air cooler. The water pressure gauge is a remote water pressure gauge.
One or more air coolers can be adopted; if the cooling device is used for cooling the air-cooled fan, the inlets of the air-cooled fans are connected in parallel and then serve as the inlet of a total air-cooled fan, the outlets of the air-cooled fans are connected in parallel and then serve as the outlet of the total air-cooled fan, and the number of the air-cooled fans can be selected according to the refrigerating power required by a user.
The outlet of the air cooler is connected with the primary inlet of the plate heat exchanger 12 through a pipeline; the pipeline is provided with a temperature sensor Tn2 and an expansion water tank 11; a primary outlet of the plate heat exchanger 12 is connected with an inlet of an air cooler through two water pump branches connected in parallel; each water pump branch comprises a turbine butterfly valve 6, a filter 9, a rubber joint 7, an external circulating water pump 8, a rubber joint 7 and a turbine butterfly valve 6 from an inlet to an outlet in sequence; the primary outlet of the plate heat exchanger 12 is connected with the inlets of the two water pump branch circuits, the outlets of the two water pump branch circuits are connected with the inlet of the air cooler, and the indoor temperature sensor 4 and the water pressure gauge 5 are arranged on the connecting pipeline of the section. The two water pump branches are used when the water pump on one branch is damaged, the water pump on the other branch can normally operate, and medium circulation of the outdoor heat release circulation system is guaranteed.
The working principle of the outdoor heat release circulating system is as follows:
when the outdoor temperature Tw is detected to be less than or equal to minus 10 ℃, the air cooler is started, the water pump 8 of one water pump branch is started, and the refrigerant medium circulates in the outdoor heat release circulating system; when the temperature detected by Tn2 is less than or equal to a target value (such as zero), the fan in the air cooler stops running, when the temperature detected by Tn2 is greater than the target value (such as zero), the air cooler starts frequency conversion, the Tn2 detects the temperature of the refrigerant in the primary inlet of the plate heat exchanger 12, and when the temperature of the refrigerant approaches the target value of 1 ℃, the air cooler keeps running at the current frequency conversion frequency, so that constant temperature circulation of the refrigerant is ensured. The water pressure gauge 5 is used for displaying the pressure of the refrigerant medium. The expansion tank is used for supplementing the refrigerant medium when the refrigerant medium in the refrigerant medium pipeline is insufficient, balancing the normal operation of the medium in the pipeline and ensuring that the pipeline is filled with the refrigerant medium all the time.
The indoor heat absorption circulating system comprises a plate heat exchanger, a turbine butterfly valve and a temperature controller; a primary inlet and an outlet of the plate heat exchanger 12 are respectively connected with an air cooler outlet and a water pump branch inlet, and a secondary inlet and an outlet are respectively connected with an outlet and an inlet of the water chilling unit 17; an indoor temperature controller is arranged on a pipeline for connecting the secondary outlet with the outlet of the water chilling unit 17, and a freezing pump of an original refrigerating system is connected to a pipeline for connecting the secondary inlet with the inlet of the water chilling unit 17 and is connected with a water tank through the freezing pump. In order to facilitate maintenance and replacement, turbine butterfly valves are respectively arranged at a primary inlet and a primary outlet of the plate heat exchanger and close to the inlet and the outlet outside the inlet and the outlet.
The outlet of the reservoir is connected with the water suction port of the freezing pump 8 through a pipeline, and the water outlet of the freezing pump 8 is connected with the secondary inlet of the plate heat exchanger 12 and the inlet of the water chilling unit 17 through pipelines. A first electric turbine butterfly valve 16 is arranged on a water outlet of the freezing pump 8 and a secondary inlet pipeline of the plate type heat exchanger 12, and a second electric turbine butterfly valve 15 is arranged on a pipeline of an inlet of the water chilling unit 17.
The working principle of the indoor heat absorption circulating system is as follows:
when the detected outdoor temperature Tw is less than or equal to minus 10 ℃, the first electric turbine butterfly valve 16 is opened, the second electric turbine butterfly valve 15 is closed, the refrigerating pump 14 is operated to drive the medium in the water tank to pass through the secondary inlet of the plate type heat exchanger 12, the medium and the primary circulation of the plate type heat exchanger 12 are subjected to heat transfer, the medium and the outdoor low-temperature refrigerant medium are subjected to heat exchange, and the cooled medium returns to the water tank through the secondary outlet of the plate type heat exchanger 12 to be stored for later use.
Tn real-time monitoring whether the medium temperature reaches a set temperature (2 ℃ in the embodiment); if Tn > the set temperature, the second electric turbine butterfly valve 15 is opened and the chiller 17 is started to run at 50% power; tn is less than or equal to the set temperature, the chiller 17 is stopped and the second electric turbine butterfly valve 15 is closed. Therefore, in the northeast area, under the condition of low outdoor environment, the system can replace the original water chilling unit 17 to finish the refrigeration capacity, thereby achieving the purposes of saving energy and reducing the operation cost.
The anti-freezing circulation system comprises a plate heat exchanger 18 and an electromagnetic valve 19; the primary inlet and outlet of the plate heat exchanger 18 are respectively connected to two ends of a turbine butterfly valve 6 which is close to the outlet of the branch in a water pump branch through the turbine butterfly valve; the secondary inlet and outlet are respectively connected with the steam inlet and outlet through a gate valve; an electric gate valve 19 is arranged on a pipeline between the gate valve outside the secondary outlet and the steam inlet.
The working principle of the anti-freezing circulation system is as follows:
when the outdoor temperature Tw is detected to be less than or equal to minus 20 ℃, the electric gate valve 19 is started every 1-2 hours and is kept for 20-30 minutes, external high-temperature steam (130 ℃) enters a secondary inlet of the plate heat exchanger 18 and enters a refrigerant medium in a primary inlet of the plate heat exchanger 18 through a flow dividing branch of an outlet of an external circulating water pump in an outdoor heat release circulating system to carry out heat exchange with the refrigerant medium, the temperature of the refrigerant medium cannot reach the crystallization temperature, and the refrigerant medium is enabled to be not frozen and can normally circulate.
The specific implementation is as follows:
the air cooler is characterized in that the place is firstly determined that the average temperature can reach minus 10 ℃ in winter (in northern areas), water in a heat exchange water pipe of an outdoor unit is cooled through forced heat exchange between the outdoor unit and natural cold air, the water is conveyed to the indoor and is driven by an external circulating water pump to carry out heat exchange with an indoor plate type heat exchanger, the other end of the plate exchanger is connected with an original refrigerating system pipeline, and the water after heat exchange is conveyed to a reservoir for standby through valve switching.
Controlling the content: the outdoor temperature is-10 ℃ under the condition of putting into use. Before operation, all manual valves of the system are opened.
An outdoor heat release circulating system: the medium in the system is low temperature resistant brine, calcium chloride, alcohol, glycol and other refrigerating medium. The connection sequence is as follows: the system comprises an external circulating pump, a circulating pump valve set, a remote pressure gauge, a temperature controller Tn1, an outdoor air cooler inlet, an air cooler, an outdoor air cooler outlet, an expansion water tank, a temperature controller Tn2, a Y-type filter, a plate heat exchanger 1-time circulating inlet, a heat exchanger 1-time circulating outlet, a circulating pump valve set and an external circulating pump suction port. The medium is driven by the external circulating pump to exchange heat with the outdoor cold air blower, and when the temperature displayed by the temperature controller Tn2 is a target value, the outdoor cold air blower does not start the running fan. Otherwise, the fan is started, the starting number of the fan is gradually changed by 25%, 50%, 75% and 100%, and when the temperature controller Tn2 is close to the target value +1 ℃ in the starting process, the starting amount of the fan is kept at the moment so as to ensure the realization of the most energy-saving mode. Tn1 is intended to detect the temperature of the liquid supply. The expansion tank acts on a device for the system to lose or evaporate the low-temperature solution to supplement the liquid for the system.
Indoor heat absorption circulation system: the system medium is determined according to the working conditions (water at the temperature of more than or equal to 2 ℃, antifreeze medium at the temperature of less than 2 ℃ and glycol solution are generally selected). The connection sequence is as follows: the method comprises the steps of circulating water pump outlet of the original system, turbine electric butterfly valve, plate heat exchanger 2 times of circulating inlet, plate heat exchanger 2 times of circulating outlet, temperature controller Tn-tail end low temperature water supply, tail end low temperature backwater and refrigerating water pump suction of the original system. The refrigerant pump drives a medium (water or glycol solution) to exchange heat with the plate heat exchanger, and when the outdoor temperature Tw is less than or equal to-10 ℃, the electric butterfly valve M1 is opened, and the electric butterfly valve M2 is closed. When the temperature detected by Tn is higher than the target value, an indoor endothermic cycle is operated.
An anti-freezing circulation system: one side of the plate heat exchanger is circulated to form a steam inlet and outlet system, a water inlet is replaced on two side plates of the plate heat exchanger and is connected with a water outlet of an external circulating pump of the outdoor heat release circulating system, a water outlet is replaced on the plates and is also connected with a water outlet of the external circulating pump of the outdoor heat release circulating system, and a valve of a water pump is separated between an inlet connecting pipe and an outlet connecting pipe. When the temperature of the system Tn2 is detected to be lower than minus 20 ℃, the electromagnetic valve on the steam pipeline is automatically closed after being opened for 20-30 minutes.
Claims (6)
1. The winter energy recovery refrigeration system is characterized by comprising an outdoor heat release circulation system, an indoor heat absorption circulation system and an anti-freezing circulation system; the outdoor heat release circulating system is connected with the indoor heat absorption circulating system and the anti-freezing circulating system;
the outdoor heat release circulating system comprises an air cooler (1), a water pump branch, an indoor temperature controller and an expansion water tank (11); an inlet of the air cooler (1) is connected with an outlet of the indoor heat absorption circulating system through a water pump branch, and an outlet of the air cooler (1) is connected with an inlet of the indoor heat absorption circulating system; a first indoor temperature controller (4) and a water pressure gauge (5) are arranged on a pipeline connecting an inlet of the air cooler (1) and a water pump branch; a second indoor temperature controller (10) and an expansion water tank (11) are arranged on a pipeline connecting the outlet of the air cooler (1) and the inlet of the indoor heat absorption circulating system;
the indoor heat absorption circulating system comprises a first plate type heat exchanger (12), an electric turbine butterfly valve and a third indoor temperature controller (13); a primary inlet of the first plate type heat exchanger (12) is used as an inlet of an indoor heat absorption circulating system and is connected with an outlet of the air cooler (1), a primary outlet is used as an outlet of the indoor heat absorption circulating system and is connected with a water pump branch, and a secondary inlet and a secondary outlet are respectively connected with an outlet and an inlet of the water chilling unit (17); a third indoor temperature controller (13) is arranged on a pipeline connecting the secondary outlet with the outlet of the water chilling unit (17); a refrigerating pump (14) arranged at the outlet of the water tank is connected to a pipeline connecting the secondary inlet with the inlet of the water chilling unit (17); a second electric turbine butterfly valve (15) is arranged on a pipeline connecting the refrigerating pump (14) and the water chilling unit (17), and a first electric turbine butterfly valve (16) is arranged on a pipeline connecting the refrigerating pump (14) and the water chilling unit (17); turbine butterfly valves (6) are arranged outside the primary inlet and the secondary inlet of the first plate heat exchanger (12).
2. A winter energy recovery refrigeration system according to claim 1, characterized in that the water pump branch comprises a first turbine butterfly valve, a Y-filter (9), an external circulation water pump (8) and a second turbine butterfly valve connected in series; the first turbine butterfly valve is connected with an outlet of the indoor heat absorption circulating system, and the second turbine butterfly valve is connected with an inlet of the air cooler (1).
3. A winter energy recovery refrigeration system according to claim 1 or 2, characterized in that the water pump branches are two and parallel.
4. A winter energy recovery refrigeration system according to claim 1, characterized in that the freeze protection cycle system includes a second plate heat exchanger (18) and a solenoid valve (19); the primary inlet and the primary outlet of the second plate heat exchanger (18) are respectively connected to two ends of a second turbine butterfly valve in the water pump branch circuit through the turbine butterfly valve; the secondary inlet and outlet are respectively connected with the steam inlet and outlet through a gate valve; and a solenoid valve (19) is arranged on a pipeline between the gate valve outside the secondary outlet and the steam inlet.
5. The winter energy recovery refrigeration method is characterized by comprising the following steps:
when the outdoor temperature controller (3) detects that the outdoor temperature is less than or equal to minus 10 degrees, the air cooler (1) is started, and the external circulating water pump (8) of the water pump branch is started, so that the refrigerant medium circulates in the outdoor heat release circulating system; simultaneously, a first electric turbine butterfly valve (16) is opened, a second electric turbine butterfly valve (15) is closed, a refrigerating pump (14) drives a medium in the water tank to perform heat exchange with an outdoor low-temperature refrigerant medium through a secondary inlet of a second plate heat exchanger (12), and the cooled medium returns to the water tank for standby through a secondary outlet of the second plate heat exchanger (12);
when the indoor temperature detected by the second indoor temperature controller (10) is less than or equal to the target value, the fan in the air cooler (1) stops running;
when the indoor temperature detected by the second indoor temperature controller (10) is greater than a target value, the air cooler (1) is started in a variable frequency mode; the second indoor temperature controller (10) detects the temperature of the refrigerant medium in the primary inlet of the first plate heat exchanger (12) in real time; when the temperature of the cold medium reaches +/-1 ℃ of a target value, the air cooler (1) keeps the current variable frequency to operate;
a third indoor temperature controller (13) monitors whether the temperature of the medium reaches a set temperature in real time; if the medium temperature is higher than the set temperature, opening a second electric turbine butterfly valve (15) and starting a water chilling unit (17) to operate at 1/2 rated power; otherwise, the chiller (17) is stopped and the second electric turbine butterfly valve (15) is closed.
6. A winter energy recovery refrigeration method as claimed in claim 5, characterized in that:
when the second indoor temperature controller (10) detects that the outdoor temperature is less than or equal to minus 20 ℃, the electromagnetic valve (19) is started at every set time interval and is kept for set time, and external steam flows through the secondary inlet of the second plate heat exchanger (18), is shunted by the outlet of the external circulating water pump (8) in the outdoor heat-releasing circulating system and enters the cold medium in the primary inlet of the second plate heat exchanger (18) to exchange heat.
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| CN201510524399.8A CN106468465B (en) | 2015-08-25 | 2015-08-25 | Winter energy recovery refrigerating system and refrigerating method thereof |
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| CN201510524399.8A CN106468465B (en) | 2015-08-25 | 2015-08-25 | Winter energy recovery refrigerating system and refrigerating method thereof |
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| CN109882900B (en) * | 2019-01-09 | 2020-09-01 | 青岛海尔空调器有限总公司 | Control method of energy system |
| CN112414158B (en) * | 2019-08-22 | 2022-05-20 | 涟源钢铁集团有限公司 | Vacuum pump system, condenser vacuum system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230652A (en) * | 2011-06-10 | 2011-11-02 | 东南大学 | Heat and humidity segmented treatment air-conditioning device and method combined with radiation cold supply |
| CN102607124A (en) * | 2012-04-06 | 2012-07-25 | 广州市华德工业有限公司 | Anti-freezing solution regenerating and recovering device used for refrigerating air-conditioning system |
| CN103185391A (en) * | 2013-04-03 | 2013-07-03 | 深圳市得益节能科技有限公司 | Condensate water heat recovery system and central air conditioning system using same |
| CN103743145A (en) * | 2014-01-22 | 2014-04-23 | 哈尔滨商业大学 | Double-energy-source parallel indirect refrigeration system and double-energy-source parallel indirect refrigeration method |
| CN104359211A (en) * | 2014-10-22 | 2015-02-18 | 东南大学 | System and control method for preventing and eliminating dew formation of radiation tail end |
-
2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230652A (en) * | 2011-06-10 | 2011-11-02 | 东南大学 | Heat and humidity segmented treatment air-conditioning device and method combined with radiation cold supply |
| CN102607124A (en) * | 2012-04-06 | 2012-07-25 | 广州市华德工业有限公司 | Anti-freezing solution regenerating and recovering device used for refrigerating air-conditioning system |
| CN103185391A (en) * | 2013-04-03 | 2013-07-03 | 深圳市得益节能科技有限公司 | Condensate water heat recovery system and central air conditioning system using same |
| CN103743145A (en) * | 2014-01-22 | 2014-04-23 | 哈尔滨商业大学 | Double-energy-source parallel indirect refrigeration system and double-energy-source parallel indirect refrigeration method |
| CN104359211A (en) * | 2014-10-22 | 2015-02-18 | 东南大学 | System and control method for preventing and eliminating dew formation of radiation tail end |
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