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CN1959310A - Heat-transfer-medium heating and cooling apparatus - Google Patents

Heat-transfer-medium heating and cooling apparatus Download PDF

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Publication number
CN1959310A
CN1959310A CNA2006101504970A CN200610150497A CN1959310A CN 1959310 A CN1959310 A CN 1959310A CN A2006101504970 A CNA2006101504970 A CN A2006101504970A CN 200610150497 A CN200610150497 A CN 200610150497A CN 1959310 A CN1959310 A CN 1959310A
Authority
CN
China
Prior art keywords
heating
path
heat medium
cooling
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2006101504970A
Other languages
Chinese (zh)
Other versions
CN100541065C (en
Inventor
米仓正浩
武内雅弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyo Nippon Sanso Corp
Original Assignee
Taiyo Nippon Sanso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiyo Nippon Sanso Corp filed Critical Taiyo Nippon Sanso Corp
Publication of CN1959310A publication Critical patent/CN1959310A/en
Application granted granted Critical
Publication of CN100541065C publication Critical patent/CN100541065C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006Controlling or regulating processes
    • B01J19/0013Controlling the temperature of the process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00051Controlling the temperature
    • B01J2219/00074Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094Jackets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00191Control algorithm
    • B01J2219/00193Sensing a parameter
    • B01J2219/00195Sensing a parameter of the reaction system
    • B01J2219/00202Sensing a parameter of the reaction system at the reactor outlet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00191Control algorithm
    • B01J2219/00222Control algorithm taking actions
    • B01J2219/00227Control algorithm taking actions modifying the operating conditions
    • B01J2219/00238Control algorithm taking actions modifying the operating conditions of the heat exchange system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0077Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Disclosed is a heat-transfer-medium heating and cooling apparatus in which a pump which pumps out a heat transfer medium, a heat exchanger which cools the heat transfer medium, a reactor whose temperature is controlled by the heat transfer medium, and a heating unit which heats the heat transfer medium are disposed in a recirculation path. A reserve path which branches upward from a pump-suction-side path extending from the heating unit to the pump and connects to a liquid phase portion of an expansion vessel is provided in the pump-suction-side path.

Description

Heating and cooling device for heat carrier
Technical Field
The present invention relates to a heating and cooling device for a heat medium, and more particularly, to a heating and cooling device for a heat medium for controlling the temperature of a low-temperature reaction tank used in a chemical reaction process or the like.
Background
Chemical reaction processes such as organic synthesis and crystallization require high-precision temperature control. Therefore, a container having a double structure in which a separate jacket body through which a refrigerant can flow is provided outside the reaction tank is used. Further, as disclosed in, for example, japanese patent application laid-open No. 11-37623, a coolant supply device for circulating and supplying a coolant cooled to a predetermined temperature to the jacket side of the reaction tank is provided, thereby indirectly maintaining the inside of the reaction tank at a predetermined low temperature.
In such a refrigerant supply device, a storage tank is generally provided in series on the refrigerant suction side of the refrigerant circulation pump, and prevents air bubbles from being mixed into the refrigerant circulation pump and absorbs a change in volume caused by a change in temperature of the refrigerant. In the storage tank, pressure control units such as a pressure control valve and a pressure reducing valve are provided; the pressure control unit introduces the pressurized gas when the volume of the refrigerant decreases due to a decrease in the temperature of the refrigerant, and extracts the pressurized gas when the volume of the refrigerant increases due to an increase in the temperature of the refrigerant, thereby maintaining the suction pressure of the refrigerant circulation pump constant.
On the other hand, in the above-described reaction tank, when the reaction tank is cleaned, an operation of heating the detergent in the reaction tank by circulating and introducing a high-temperature heat medium into the jacket body is performed, and therefore, a means for supplying the heat medium needs to be provided in addition to the refrigerant supply device. In this case, if the refrigerant is drawn from the inside of the jacket body to supply the heat medium, the apparatus structure including the piping and the like becomes complicated, and the refrigerant and the heat medium supplied to the jacket body need to be replaced, which causes a problem of complicating the process.
Therefore, it is also conceivable to provide a means for heating the refrigerant in the system of the refrigerant supply device, and heat the reaction tank by circulating the refrigerant to the jacket body while heating the refrigerant to a predetermined temperature. However, when the storage tanks are provided in series on the refrigerant suction side as described above, not only the refrigerant in the pipe of the cycle system and the refrigerant in the jacket body but also the refrigerant in the storage tanks must be heated, and therefore, energy costs required for heating and cooling become large.
Further, since the pressure in the storage tank increases due to the increase in volume caused by the increase in the temperature of the refrigerant and the vaporization of the refrigerant, when the pressure control means operates to release the gas in the storage tank, an expensive refrigerant vapor may be released to the outside.
Accordingly, an object of the present invention is to provide a heat medium heating and cooling device that can reduce energy costs, efficiently heat and cool a reaction tank, and avoid complication and enlargement of the device structure by minimizing the amount of a heat medium (refrigerant) to be heated and cooled.
Disclosure of Invention
The heat carrier heating and cooling device comprises a circulating pump, a cooling unit, a reaction tank and a heating unit, and is provided with a circulating path; the circulating pump is used for sending out the heat carrier; the cooling unit is used for cooling the heat-transfer medium discharged from the circulating pump; the reaction tank is temperature-controlled by the heat medium led out from the cooling unit; the heating unit is used for heating the heat carrier led out from the reaction tank; the circulation path circulates the heat medium to the circulation pump through the circulation pump, the cooling unit, the reaction tank, and the heating unit, wherein a storage path is provided in a pump suction-side path from the heating unit to the circulation pump, the storage path branching from the pump suction-side path and being connected to a liquid phase portion of a storage tank.
Further, a heating medium heating and cooling apparatus according to the present invention is characterized in that: the reservoir path branches upward from the pump suction-side path. In addition, another heating medium heating and cooling apparatus according to the present invention is characterized in that: the storage tank has a vapor collector communicating with a gas phase part thereof, the vapor collector having a cooling part, a path for returning the heat medium cooled and liquefied by the cooling part to the storage tank, and a gas release valve; the cooling unit is configured to cool and liquefy the heat medium vapor; the gas release valve releases gas from the gas phase portion of the vapor trap in accordance with the pressure in the vapor trap.
In the heat medium heating and cooling device according to the present invention, the storage tank is provided in a state of being branched from the circulation path, and therefore, when the reaction tank is switched from cooling to heating or from heating to cooling, the heat medium to be heated or cooled can be only the heat medium circulating in the circulation path, and it is not necessary to heat or cool the heat medium in the storage tank. Therefore, energy costs can be reduced and responsiveness can be improved, and the reaction tank can be reliably heated or cooled to a predetermined temperature.
Further, by branching the storage path connected to the storage tank upward from the pump suction-side path, it is possible to efficiently discharge the air bubbles present in the heat medium flowing through the pump suction-side path into the storage tank, and to prevent the air bubbles from being mixed into the circulation pump. Further, by providing the vapor trap in the storage tank, it is possible to prevent the heat medium vapor in the storage tank from being released to the outside from the gas release valve due to the pressure rise in the system.
Further, since the heating and cooling of the heat medium can be performed in one closed cycle system, the facility cost and the running cost can be reduced without complicating and enlarging the apparatus structure.
Drawings
Fig. 1 is a system diagram showing a heating medium heating and cooling apparatus according to an embodiment of the present invention.
Detailed Description
The heating and cooling device for a heat medium shown in fig. 1 includes a circulation pump 11, a heat exchanger 12, a reaction tank 13, a heater 14, and pipes connecting the circulation pump 11, the heat exchanger 12, the reaction tank 13, and the heater 14, and has a circulation path 15 of a closed circulation system; the circulation pump 11 is for feeding a heat medium; the heat exchanger 12 is cooling means for cooling the heat medium discharged from the circulation pump 11; the reaction tank 13 is temperature-controlled by the heat medium led out from the heat exchanger 12; the heater 14 is a heating means for heating the heat medium discharged from the reaction tank 13; the circulation path 15 circulates the heat medium to the circulation pump 11 through the circulation pump 11, the heat exchanger 12, the reaction tank 13, and the heater 14 via pipes.
The heat exchanger 12 cools the circulating heat medium to a predetermined temperature by indirect heat exchange with a cryogenic fluid such as a cryogenic liquefied gas introduced from the cryogenic fluid introduction path 16 into the heat exchanger 12 and then discharged to the exhaust gas path 17; the heater 14 heats the circulating heating medium to a predetermined temperature by the heating unit 14 a.
The reaction vessel 13 is provided with a jacket 13b on the outer periphery of the reaction vessel 13a, through which a heat medium flows. The temperature of the heating medium supplied to the jacket body 13b is adjusted by controlling the opening and closing of a flow rate adjusting valve 20 and the capacity of the heating portion 14a by a temperature-indicating controller (TIC)19, the temperature-indicating controller (TIC)19 being provided in the inlet-side passage 18 of the jacket body 13b, and the flow rate adjusting valve 20 being provided in the low-temperature-fluid introduction passage 16.
A reservoir passage 23 is provided in the pump suction-side passage 21 from the heater 14 to the circulation pump 11, and the reservoir passage 23 is branched upward from the pump suction-side passage 21 and connected to the liquid phase portion 22a of the reservoir tank 22. The storage tank 22 is provided in a state of being branched from the circulation path 15 via the storage path 23, is not connected in series with the circulation flow of the heat medium as in the conventional case, but is separated from the flow path, and is formed so that the heat medium is exchanged between the circulation path 15 and the storage tank 22 in accordance with the change in volume of the heat medium flowing through the circulation path 15, and the circulation path 15 is in a liquid-sealed state so that the gas does not enter the circulation path 15 from the storage tank 22.
Further, a gas introduction valve 24 and a vapor collector 25 that operate in accordance with the pressure in the storage tank 22 are connected to the gas phase portion 22b of the storage tank 22. The vapor trap 25 is provided with a gas release valve 26 that operates in accordance with the pressure in the vapor trap 25.
The vapor collector 25 has a cooling unit 27, a gas-liquid separation unit 28, a heat medium returning path 29, and a float valve 30; the cooling unit 27 cools and liquefies the heat medium vapor; the gas-liquid separator 28 separates the heat medium liquefied in the cooler 27 from the gas that is not liquefied; the heat medium returning path 29 returns the heat medium separated in the gas-liquid separator 28 to the storage tank 22; the float valve 30 is opened and closed according to the amount (amount) of the heat medium stored in the gas-liquid separation unit 28 and the pressure difference.
The gas introduction valve 24 and the gas discharge valve 26 operate in accordance with a pressure change caused by a volume change of a heat medium circulating in the circulation path 15 connected by pressure; when the heat medium is heated to increase its volume and the system internal pressure rises, the gas release valve 26 is operated to release the gas in the system to the outside of the system, thereby keeping the pressure in the system at or below the set upper limit pressure; when the heat medium is cooled and the volume thereof is reduced and the pressure in the system is decreased, the gas introduction valve 24 is opened to introduce a gas that does not adversely affect the heat medium, for example, nitrogen gas, from the outside of the system as a pressurized gas, thereby maintaining the pressure in the system at the set lower limit pressure or more.
When gas is released from the gas release valve 26, the gas extracted from the gas phase portion 22b of the storage tank 22 is cooled in the cooling unit 27 of the vapor collector 25, whereby the heat medium vapor contained in the gas can be condensed and liquefied, and the heat medium vapor can be prevented from being released to the outside together with the gas released from the gas release valve 26. When the amount of the heat medium stored in the gas-liquid separator 28 becomes a certain level or more, the float valve 30 is opened, and the heat medium is returned from the gas-liquid separator 28 to the storage tank 22 through the heat medium returning path 29 and reused.
In the heating medium heating and cooling device configured as described above, when cooling the reaction tank 13, the temperature indication controller 19 is set to a predetermined cooling temperature, the temperature indication controller 19 is operated in accordance with the temperature of the heating medium flowing through the inlet-side path 18, and the opening degree of the fluid control valve 20 is mainly controlled during cooling, thereby adjusting the cooling state of the heating medium in the heat exchanger 12.
During this cooling, since the heat medium volume decreases with a decrease in temperature, the heat medium in the storage tank 22 flows into the circulation path 15, and the gas introduction valve 24 is opened and closed in accordance with a decrease in pressure caused by the decrease in the heat medium volume in the storage tank 22, and the pressure in the system is maintained at a predetermined pressure by introducing pressurized gas. At this time, the heat medium having a relatively high temperature flows into the circulation path 15 from the storage tank 22, but since the flow rate thereof is small in accordance with the volume reduction amount of the heat medium due to cooling, the inflow amount thereof does not cause a large temperature change to the heat medium circulating in the circulation path 15.
Further, since the storage tank 22 is separated from the circulation path 16, it is not necessary to cool the heat medium in the storage tank 22, and the amount of the cooled heat medium is reduced as compared with a conventional apparatus in which all the heat mediums are to be cooled, so that the energy cost for cooling the heat medium can be significantly reduced as compared with the conventional apparatus, and the responsiveness is also excellent.
On the other hand, when the reaction tank 13 is heated, the temperature indication controller 19 is operated in accordance with the temperature of the heat medium flowing through the inlet-side path 18 by setting a predetermined heating temperature to the temperature indication controller 19; the heating state of the heat medium in the heater 14 is adjusted mainly by controlling the capacity of the heater 14 at the time of heating.
During this heating, since the heat medium volume increases with an increase in the heat medium temperature, a part of the heat medium circulating in the circulation path 15 flows into the storage tank 22, the pressure of the vapor collector 25 increases with the inflow of the heat medium into the storage tank 22, and the gas release valve 26 is opened and closed in accordance with this pressure increase, and the gas is discharged to the outside of the system to maintain the inside of the system at a predetermined pressure. Further, since the bubbles of the heat carrier vapor generated by heating in the heater 14 float up through the storage passage 23, the circulation pump 11 can be prevented from sucking the bubbles, and the storage passage 23 is branched upward from the pump suction-side passage 21. The bubbles made of the heat medium vapor floating from the storage path 23 into the storage tank 22 flow into the liquid phase portion 22a of the storage tank 22, and then come into contact with the heat medium having a lower temperature than the heat medium circulating through the circulation path 15 to be reliquefied, or are reliquefied by the cooling portion 17 of the vapor collector 25.
The storage path 23 branches upward in the vertical direction from the pump suction-side path 21, and by using a thick pipe for the pump suction-side path 21 and the storage path 23, or by bending the pump suction-side path 21 downward toward the circulation pump 11, bubbles in the heat medium can be efficiently separated by floating up toward the storage path 23.
Further, as described above, since the heating medium to be heated is only the heating medium circulating in the circulation path 15, energy cost required for heating the heating medium can be significantly reduced, and responsiveness can be improved. The heat medium heated by the heater 14 in response to the increase in the heat medium volume flows into the storage tank 22, and since the inflow amount is small and the heat medium is not further heated, heat medium vapor is hardly generated in the storage tank 22; even if evaporation occurs, the heat medium can be collected by the vapor collector 25 and reused, so that the loss of the heat medium can be minimized.
The heating means and the cooling means provided in the circulation path 15 may be appropriately used according to conditions such as heating temperature, cooling temperature, and throughput, and any heating source and cooling source may be used. The cooling temperature in the cooling unit 27 can be set arbitrarily according to the boiling point of the heating medium, the expected steam amount, and the steam temperature, and a normal cooling method such as air cooling or water cooling can be adopted, and the configuration and shape thereof are also arbitrary. The heat medium to be used may be selected as appropriate depending on the cooling temperature and the heating temperature, and examples thereof include silicone oil, alcohols, and hydrofluoroethers.

Claims (3)

1. A heating and cooling device for a heat carrier, which comprises a circulating pump, a cooling unit, a reaction tank and a heating unit, and has a circulating path; the circulating pump is used for sending out the heat carrier; the cooling unit is used for cooling the heat-transfer medium discharged from the circulating pump; the temperature of the reaction tank is controlled by the heat medium led out from the cooling unit; the heating unit is used for heating the heat carrier led out from the reaction tank; the circulation path circulates the heat medium to a circulation pump through the circulation pump, the cooling unit, the reaction tank, and the heating unit; wherein,
a storage path is provided in a pump suction-side path from the heating unit to the circulation pump, and the storage path is branched from the pump suction-side path and connected to the liquid phase portion of the storage tank.
2. The heat carrier heating and cooling device according to claim 1,
the reservoir path branches upward from the pump suction-side path.
3. The heat carrier heating and cooling device according to claim 1 or 2,
the storage tank has a vapor collector communicating with a gas phase part thereof, the vapor collector having a cooling part, a path for returning the heat medium cooled and liquefied by the cooling part to the storage tank, and a gas release valve; the cooling unit is configured to cool and liquefy the heat medium vapor; the gas release valve releases gas from the gas phase portion of the vapor trap in accordance with the pressure in the vapor trap.
CNB2006101504970A 2005-11-04 2006-11-02 Heat-transfer-medium heating and cooling apparatus Expired - Fee Related CN100541065C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005320360A JP4068108B2 (en) 2005-11-04 2005-11-04 Heating medium heating and cooling device
JP2005320360 2005-11-04

Publications (2)

Publication Number Publication Date
CN1959310A true CN1959310A (en) 2007-05-09
CN100541065C CN100541065C (en) 2009-09-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006101504970A Expired - Fee Related CN100541065C (en) 2005-11-04 2006-11-02 Heat-transfer-medium heating and cooling apparatus

Country Status (5)

Country Link
US (1) US20070104626A1 (en)
JP (1) JP4068108B2 (en)
CN (1) CN100541065C (en)
HK (1) HK1100693A1 (en)
SG (1) SG131914A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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CN101801519A (en) * 2007-09-21 2010-08-11 大阳日酸株式会社 Heat-medium heating/cooling apparatus, and heat-medium temperature control method
CN104457088A (en) * 2014-10-14 2015-03-25 安徽轩扬包装科技有限公司 Dual-refrigerating equipment used for printing enterprise
CN117083493A (en) * 2021-07-07 2023-11-17 大阳日酸株式会社 Cooling circulation device and method for secondary refrigerant

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JP5306708B2 (en) * 2008-05-28 2013-10-02 大陽日酸株式会社 Refrigerant cooling device
JP2010131522A (en) * 2008-12-04 2010-06-17 Mitsubishi Rayon Co Ltd Crystallizer and method of removing crystal
KR101094279B1 (en) * 2009-11-06 2011-12-19 삼성모바일디스플레이주식회사 Heating device and Substrate Processing Apparatus having the same
JP4707764B1 (en) * 2010-04-13 2011-06-22 八尾乳業協同組合 Method and apparatus for preventing contamination in a fluid storage tank requiring temperature control
SG11201400732RA (en) * 2011-10-11 2014-09-26 Taiyo Nippon Sanso Corp Low temperature gas supply device, heat transfer medium-cooling device, and low temperature reaction control device
KR101643045B1 (en) * 2013-09-17 2016-07-27 주식회사 엘지화학 Heat recovery apparatus
JP2014148540A (en) * 2014-05-13 2014-08-21 Mitsubishi Rayon Co Ltd Crystallization apparatus and method for removing crystallized product

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CN101801519A (en) * 2007-09-21 2010-08-11 大阳日酸株式会社 Heat-medium heating/cooling apparatus, and heat-medium temperature control method
CN101801519B (en) * 2007-09-21 2013-06-12 大阳日酸株式会社 Heat-medium heating/cooling apparatus, and heat-medium temperature control method
CN104457088A (en) * 2014-10-14 2015-03-25 安徽轩扬包装科技有限公司 Dual-refrigerating equipment used for printing enterprise
CN117083493A (en) * 2021-07-07 2023-11-17 大阳日酸株式会社 Cooling circulation device and method for secondary refrigerant
CN117083493B (en) * 2021-07-07 2024-06-11 大阳日酸株式会社 Cooling circulation device and method for secondary refrigerant

Also Published As

Publication number Publication date
JP4068108B2 (en) 2008-03-26
JP2007127334A (en) 2007-05-24
HK1100693A1 (en) 2007-09-28
SG131914A1 (en) 2007-05-28
US20070104626A1 (en) 2007-05-10
CN100541065C (en) 2009-09-16

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