WO2023282280A1 - 2次冷媒の冷却循環装置及び冷却循環方法 - Google Patents
2次冷媒の冷却循環装置及び冷却循環方法 Download PDFInfo
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- WO2023282280A1 WO2023282280A1 PCT/JP2022/026801 JP2022026801W WO2023282280A1 WO 2023282280 A1 WO2023282280 A1 WO 2023282280A1 JP 2022026801 W JP2022026801 W JP 2022026801W WO 2023282280 A1 WO2023282280 A1 WO 2023282280A1
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- WIPO (PCT)
- Prior art keywords
- secondary refrigerant
- reserve tank
- line
- liquefied gas
- refrigerant
- Prior art date
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 303
- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 60
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 35
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 13
- 229910001873 dinitrogen Inorganic materials 0.000 description 9
- 239000012071 phase Substances 0.000 description 9
- 239000007791 liquid phase Substances 0.000 description 6
- 241000532784 Thelia <leafhopper> Species 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 101001028804 Homo sapiens Protein eyes shut homolog Proteins 0.000 description 3
- 102100037166 Protein eyes shut homolog Human genes 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VMTCKFAPVIWNOF-UHFFFAOYSA-N methane tetrahydrofluoride Chemical compound C.F.F.F.F VMTCKFAPVIWNOF-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
Definitions
- the present invention relates to a cooling circulation device and cooling circulation method for a secondary refrigerant, and more particularly to a device and method for cooling and circulating a secondary refrigerant to exchange heat with a load.
- the lower cooling limit temperature is lower than that of the refrigerant that is liquid under normal temperature and normal pressure.
- the secondary refrigerant which is a gas that is relatively easy to liquefy
- the part that liquefies the secondary refrigerant gas-liquid separation part 52
- the part that further cools A circulating part heat exchanger 53
- vapor lock may occur in the path under conditions where it is easy to vaporize on the discharge side of the circulation pump or on the load side of the load section. , Further ingenuity was required to perform stable circulation.
- a first aspect of the present invention is a secondary refrigerant cooling and circulation device that circulates and supplies a secondary refrigerant that has been cooled by exchanging heat with a liquefied gas to a load section, comprising: a liquefied gas supply line that supplies the liquefied gas; a secondary refrigerant reserve tank for storing a secondary refrigerant as a liquid; a secondary refrigerant circulation line for circulating the secondary refrigerant supplied from the secondary refrigerant reserve tank; a liquefied gas in the liquefied gas supply line and the secondary refrigerant; A secondary refrigerant heat exchanger that cools the secondary refrigerant by exchanging heat with the secondary refrigerant in the refrigerant circulation line, and the liquefied gas supply line is led to the secondary refrigerant heat exchanger and then A secondary refrigerant condensing portion is inserted into the secondary refrigerant reserve tank to condense and liquefy the secondary refrigerant supplied to the
- a load section heat exchanger for exchanging heat between the secondary refrigerant in the secondary refrigerant circulation line and the thermal fluid in the load section to cool the thermal fluid.
- the distribution position of the secondary refrigerant circulation line in the load section heat exchanger is set in advance for switching the control state, and the height of the liquid surface of the secondary refrigerant in the secondary refrigerant reserve tank is set in advance. It is characterized in that it is set to a position lower than the lowest position among them.
- a secondary refrigerant bypass line that branches from the secondary refrigerant circulation line and returns a liquid secondary refrigerant to the secondary refrigerant reserve tank and a gaseous secondary refrigerant. It is characterized by providing a secondary refrigerant gas vent line for returning the secondary refrigerant.
- a fourth invention of the present invention is a secondary refrigerant cooling circulation method for circulating and supplying a secondary refrigerant to a load section using the cooling circulation device of the second or third invention, wherein the secondary refrigerant reserve
- the temperature control valve is operated based on the temperature of the secondary refrigerant stored in the secondary refrigerant reserve tank.
- the secondary refrigerant flowing through the secondary refrigerant circulation line It is characterized by controlling the opening and closing of the temperature control valve based on the temperature.
- the height of the liquid level of the secondary refrigerant in the secondary refrigerant reserve tank is one of the preset heights for switching the control state. is located above the highest position of the secondary refrigerant reserve tank, the supply of the secondary refrigerant to the secondary refrigerant reserve tank is stopped.
- the configuration is simplified compared to the conventional one because the liquefied gas supply line forms the secondary refrigerant condensation section.
- the overall device configuration can be simplified, and the overall device cost can be kept low.
- the secondary refrigerant can be stably circulated without causing vapor lock or the like due to vaporization.
- FIG. 1 is a diagram showing a cooling circulation device for a secondary refrigerant, which is one embodiment of the present invention
- 1 is a diagram showing an example of a conventional refrigerant circulation type cooling device
- FIG. 1 shows a secondary refrigerant cooling circulation device 1 that is an embodiment of the present invention.
- the cooling circulation device 1 includes a liquefied gas supply line 2, a secondary refrigerant supply line 3, a nitrogen gas supply line 4, a secondary refrigerant reserve tank 5, a nitrogen and secondary refrigerant exhaust line 6, and secondary refrigerant flow-down lines 7 and 2. It is roughly composed of a secondary refrigerant circulation line 8 , a secondary refrigerant heat exchanger 9 , a load section 10 , a load section heat exchanger 11 , a secondary refrigerant bypass line 12 and a secondary refrigerant vent line 13 .
- the liquefied gas supply line 2 is a path for supplying a liquefied gas (such as liquid nitrogen) for condensing and liquefying the secondary refrigerant by heat exchange, and includes a temperature control valve (TCV) 14 and a temperature indicating controller (TIC) 15. , 16 are provided.
- TCV temperature control valve
- TIC temperature indicating controller
- the liquefied gas supply line 2 is inserted through a secondary refrigerant reserve tank 5 which will be described later, and forms a secondary refrigerant condenser 17 for heat exchange within the secondary refrigerant reserve tank 5 . Further, the liquefied gas supply line 2 forms a liquefied gas exhaust line 18 for exhausting the liquefied gas after heat exchange after being extracted from the secondary refrigerant reserve tank 5 .
- the TCV 14 is connected to TICs 15 and 16, TICs 21 and 26 to be described later, and a flow meter (FIT) 27, and is controlled to open and close by these.
- the liquefied gas supply line 2 serves as both the supply line to the secondary refrigerant heat exchanger 9 and the secondary refrigerant condenser 17, which will be described later, so that the device configuration can be simplified, and the overall device cost can be made cheaper.
- the secondary refrigerant condensation part 17 is arranged so as not to come into contact with the liquid surface of the secondary refrigerant.
- the secondary refrigerant supply line 3 is a path for supplying secondary refrigerant from a supply source (left side in the figure) to a secondary refrigerant reserve tank 5, which will be described later, and a pressure control valve (PCV) 19 is provided along the way.
- PCV pressure control valve
- the nitrogen gas supply line 4 is a path for supplying nitrogen gas enclosed in the gas phase portion of the secondary refrigerant reserve tank 5 together with the secondary refrigerant, and a pressure control valve (PCV) 20 is provided on the way.
- PCV pressure control valve
- the secondary refrigerant reserve tank 5 is a tank that liquefies the secondary refrigerant supplied through the secondary refrigerant supply line 3 by the secondary refrigerant condensation section 17 and stores the secondary refrigerant in a liquid phase.
- a temperature indicator controller (TIC) 21 and a liquid level indicator alarm (LIA) 22 are provided on the wall surface of the secondary refrigerant reserve tank 5 .
- the TIC 21 is connected to the TCV 14 of the liquefied gas supply line 2 .
- the LIA 22 is provided with sensors corresponding to the preset lowest position (L) and highest position (H). When the liquid level becomes higher than L, the secondary refrigerant starts to flow down to the secondary refrigerant flow-down line 7, which will be described later. supply of
- the nitrogen and secondary refrigerant exhaust line 6 is a path for discharging gas-phase secondary refrigerant and nitrogen gas in the upper part of the secondary refrigerant reserve tank 5 when the pressure inside the tank 5 exceeds a certain level.
- a pressure control valve (PCV) 23 and a check valve (CV) 24 are provided on the way.
- the secondary refrigerant flow-down line 7 is a path for supplying secondary refrigerant stored in the bottom of the secondary refrigerant reserve tank 5 to a secondary refrigerant circulation line 8 described later, and one end is connected to the secondary refrigerant reserve tank 5 . , and the other end is connected to the secondary refrigerant circulation line 8 .
- the secondary refrigerant circulation line 8 is a path through which the secondary refrigerant liquefied in the secondary refrigerant reserve tank 5 is circulated for use in the load section heat exchanger 11, which will be described later.
- An indicator controller (TIC) 26 and a flow meter (FIT) 27 are provided.
- the RP 25 is connected to the LIA 22 of the secondary refrigerant reserve tank 5 and is activated only when the liquid level in the tank is above L. Also, the TIC 26 and FIT 27 are connected to the TCV 14 .
- the secondary refrigerant heat exchanger 9 exchanges heat between the liquefied gas supplied to the liquefied gas supply line 2 and the secondary refrigerant supplied to the secondary refrigerant circulation line 8. It is a heat exchanger for lowering the temperature of the next refrigerant.
- the load section heat exchanger 11 exchanges heat between the secondary refrigerant supplied to the secondary refrigerant circulation line 8 and the heat fluid generated in the load section 10, thereby lowering the temperature of the heat fluid to reduce the temperature of the load.
- a heat exchanger for reducing the load in section 10 is lower than the lowest position (L) of the liquid level of the secondary refrigerant reserve tank 5 by a height h (see FIG. 1). ).
- the secondary refrigerant bypass line 12 is a path for returning the secondary refrigerant to the liquid phase portion of the secondary refrigerant reserve tank 5 at a branch point 28 immediately after RP25 in the secondary refrigerant circulation line 8 .
- the RP 25 is protected by preventing the RP 25 from running dry and keeping the RP 25 properly started. There is work.
- the secondary refrigerant gas vent line 13 is further branched from the secondary refrigerant bypass line 12 to return the secondary refrigerant to the gas phase portion of the secondary refrigerant reserve tank 5, thereby releasing the gas generated in the secondary refrigerant. It is a route to By releasing the gas in the circulating secondary refrigerant using the secondary refrigerant gas vent line 13, there is a function of preventing the occurrence of cavitation and vapor lock in the path of the secondary refrigerant circulation line 8.
- the cooling circulation method of the present invention is performed as follows.
- gasified secondary refrigerant is supplied to the secondary refrigerant reserve tank 5 via the PCV 19.
- liquefied gas such as liquid nitrogen
- TCV 14 liquefied gas supply line 2
- liquefied gas such as liquid nitrogen
- the liquefied gas supply line 2 is inserted through the secondary refrigerant reserve tank 5 and functions as a secondary refrigerant condenser 17 in the secondary refrigerant reserve tank 5 .
- the gasified secondary refrigerant contacts the secondary refrigerant condenser 17 in the secondary refrigerant reserve tank 5, undergoes heat exchange, liquefies, and flows down to the bottom of the tank.
- nitrogen gas supplied from the nitrogen gas supply line 4 through the PCV 20 is sealed in the gas phase portion in the secondary refrigerant reserve tank 5, and the inert state is maintained.
- the liquefied secondary refrigerant (liquid phase portion) is stored in the bottom portion of the secondary refrigerant reserve tank 5 .
- the secondary refrigerant (gas phase portion) that has not been liquefied is released from the nitrogen and secondary refrigerant exhaust line 6 together with the enclosed nitrogen gas by opening the PCV 23. Ejected.
- the liquefied gas flowing through the secondary refrigerant condenser 17 is vaporized by heat exchange and discharged from the liquefied gas exhaust line 18 .
- the liquid level position is detected by the LIA 22 provided on the wall surface of the tank 5 .
- the TCV 14 is controlled by the TIC 21 provided on the same wall surface.
- the temperature indicated by the TIC 15 is a set value (eg -100 ° C.) or higher, but if it is lower than the set value, the TCV 14 is forcibly shut off, and the secondary refrigerant heat exchanger 9 It is designed to prevent the next refrigerant from freezing.
- the RP 25 is activated, and the secondary refrigerant flows through the secondary refrigerant circulation line 8 via the secondary refrigerant flow-down line 7 .
- the temperature and flow rate of the secondary refrigerant flowing through the secondary refrigerant circulation line 8 can be confirmed by the TIC 26 and FIT 27 .
- the TCV 14 controlled by the TIC 21 until then is switched to the control by the TIC 26 . That is, the control source of the TCV 14 is switched according to the state of the secondary refrigerant flowing through the secondary refrigerant circulation line 8 .
- the circulation of the liquefied gas in the liquefied gas supply line 2 progresses, and when the temperature of the liquefied gas becomes below the set value (eg -160 ° C.) in the TIC 16, the TCV 14 is forcibly shut off again, secondary refrigerant heat exchange It is designed to prevent the secondary refrigerant from freezing in the vessel 9.
- the set value eg -160 ° C.
- the secondary refrigerant circulation line 8 the secondary refrigerant is circulated by the RP25.
- a part of the secondary refrigerant is branched at the branch point 28 immediately after passing through the RP 25 .
- the secondary refrigerant bypass line 12 and the secondary refrigerant gas vent line 13 are connected to the secondary refrigerant reserve tank 5, and both are connected to the liquid phase portion of the secondary refrigerant reserve tank 5, respectively. connected to the gas phase.
- the secondary refrigerant that has passed through the secondary refrigerant bypass line 12 is returned to the liquid phase portion of the secondary refrigerant reserve tank 5, is supplied again to the secondary refrigerant circulation line 8 through the secondary refrigerant flow-down line 7, and passes through RP25. do.
- the RP 25 is prevented from running idle, and the RP 25 is properly activated and protected.
- the secondary refrigerant that has passed through the secondary refrigerant gas vent line 13 is returned to the gas phase portion of the secondary refrigerant reserve tank 5, and the gas in the secondary refrigerant is separated in the gas phase portion of the secondary refrigerant reserve tank 5. It's like By releasing the gas in the circulating secondary refrigerant in this way, it is possible to prevent the occurrence of cavitation and vapor lock in the path of the secondary refrigerant circulation line 8 .
- the temperature and flow rate of the secondary refrigerant circulating in the secondary refrigerant circulation line 8 are controlled by the TIC 26 and the FIT 27, and heat exchange with the load portion 10 can be efficiently performed in the load portion heat exchanger 11. . That is, the load section 10 can be efficiently cooled.
- the temperature control of the secondary refrigerant by the TIC 26 is performed by controlling the opening and closing of the TCV 14 connected to the TIC 26 .
- the load heat exchanger 11 when the secondary refrigerant circulation position in the load heat exchanger 11 is arranged at a position lower than the liquid level position L of the secondary refrigerant reserve tank 5 (see FIG. 1), the load heat exchanger 11 The secondary refrigerant vaporized by the heat exchange is easily discharged in the secondary refrigerant reserve tank 5 through the secondary refrigerant flow-down line 7 due to the height difference h. Also, the secondary refrigerant is easily released in the secondary refrigerant reserve tank 5 through the secondary refrigerant gas vent line 13 provided side by side. Therefore, it is possible to avoid the occurrence of vapor lock in the path of the secondary refrigerant circulation line 8, so that the secondary refrigerant can be stably circulated.
- Methane tetrafluoride has a boiling point of ⁇ 128° C. at atmospheric pressure, a freezing point of ⁇ 184° C. at atmospheric pressure, a critical point temperature of ⁇ 45.6° C., and a critical point pressure of 3.7 MPa. It is a liquefied gas that liquefies.
- the inside of the secondary refrigerant reserve tank 5 should be sufficiently purged in advance with nitrogen gas to prevent water from entering.
- TIC 21 set the TIC 21 to -80°C and supply liquid nitrogen to the liquefied gas supply line 2 through the TCV 14 .
- the set value of TIC15 was -100° C., which is sufficiently higher than the freezing point of tetrafluoromethane.
- tetrafluoromethane (boiling point of about ⁇ 75° C.) decompressed to about 1.0 MPa by the PCV 19 is supplied to the secondary refrigerant reserve tank 5, and is gradually heated by heat exchange with liquid nitrogen in the secondary refrigerant condenser 17.
- the liquefied tetrafluoromethane begins to be supplied from the bottom of the secondary refrigerant reserve tank 5 to the secondary refrigerant circulation line 8 via the secondary refrigerant flow-down line 7 .
- the liquefaction amount begins to accumulate at the bottom of the secondary refrigerant reserve tank 5, and the liquid level within the tank 5 gradually rises.
- RP 25 When it is detected that the liquid level has risen to a position above L of LIA 22, RP 25 is activated, tetrafluoromethane circulates in secondary refrigerant circulation line 8, and first the secondary refrigerant After heat exchange with liquid nitrogen by the heat exchanger 9 , it is supplied to the load section heat exchanger 11 and heat exchanged with the load section 10 .
- the flow rate of tetrafluoromethane is detected by the FIT 27, and when the flow rate reaches the set value, the TCV 14, which has been controlled by the TIC 21 until then, switches to control by the TIC 26. , the tetrafluoromethane is cooled to a set point (eg -150° C.).
- the setting value of the TIC 16 is set to a temperature lower than the previous setting value (eg, -160° C.) so that the liquid nitrogen is not discharged as liquid. Therefore, tetrafluoromethane is sufficiently cooled while maintaining its liquid state.
- the secondary refrigerant bypass line and the secondary refrigerant gas vent line 13 are provided at the branch point 28, a part of the liquid phase portion and the gas phase portion are transferred to the secondary refrigerant. It can be returned to the reserve tank 5, and a more stable circulating supply can be performed.
- the circulation position of the secondary refrigerant circulation line 8 in the load section heat exchanger 11 is set at a position lower than the position of L of the secondary refrigerant reserve tank 5 ( 1 h), vaporized tetrafluoromethane from the height difference h easily returns to the secondary refrigerant reservoir tank 5 through the secondary refrigerant flow-down line 7 .
- the secondary refrigerant circulation line 8 the positions at which the temperature indicating controller 26 and the flow meter 27 are provided are not necessarily determined, and they may be installed so that the secondary refrigerant can be circulated without hindrance.
- PCV pressure control valve
- TIC temperature indicator controller
- LIA liquid level indicator alarm
- PCV pressure control valve
- PCV pressure control valve
- CV pressure control valve
- RP Circulation pump
- TIC Temperature indicator controller
- FIT Flow meter
Abstract
Description
Claims (5)
- 液化ガスと熱交換することにより冷却された2次冷媒を負荷部に循環供給する2次冷媒の冷却循環装置において、
液化ガスを供給する液化ガス供給ラインと、
2次冷媒を液体として貯留する2次冷媒リザーブタンクと、
前記2次冷媒リザーブタンクから供給される2次冷媒を循環させる2次冷媒循環ラインと、
前記液化ガス供給ラインの液化ガスと前記2次冷媒循環ラインの2次冷媒とを熱交換させて2次冷媒を冷却する2次冷媒熱交換器と、を備え、
前記液化ガス供給ラインは、前記2次冷媒熱交換器に導出された後に、前記2次冷媒リザーブタンク内に挿通されて、前記2次冷媒リザーブタンクに供給された2次冷媒を凝縮して液化させる2次冷媒凝縮部を形成し、
前記液化ガス供給ラインに、前記2次冷媒リザーブタンク内に貯留する2次冷媒の液面のあらかじめ設定された高さに応じて制御状態が切り替わる温度制御弁を設けたことを特徴とする2次冷媒の冷却循環装置。 - 前記2次冷媒循環ラインの2次冷媒と前記負荷部の熱流体とを熱交換させて熱流体を冷却する負荷部熱交換器をさらに備え、
前記負荷部熱交換器における前記2次冷媒循環ラインの流通位置を、前記制御状態を切り替えるためのあらかじめ設定された前記2次冷媒リザーブタンク内の2次冷媒の液面の高さのうちの最低位置よりも低い位置とすることを特徴とする請求項1記載の冷却循環装置。 - 前記2次冷媒循環ラインから分岐して前記2次冷媒リザーブタンクに液体の2次冷媒を戻す2次冷媒バイパスラインと気体の2次冷媒を戻す2次冷媒ガス抜きラインを設けたことを特徴とする請求項1又は2記載の冷却循環装置。
- 請求項2又は3記載の冷却循環装置を用いて、2次冷媒を負荷部に循環供給する2次冷媒の冷却循環方法において、
前記2次冷媒リザーブタンク内の2次冷媒の液面の高さが、前記最低位置よりも下の位置にあるときは、前記2次冷媒リザーブタンク内に貯留された2次冷媒の温度に基づいて前記温度制御弁の開閉を制御し、
前記2次冷媒リザーブタンク内の2次冷媒の液面の高さが、前記最低位置よりも上の位置にあるときは、2次冷媒循環ラインを流通する2次冷媒の温度に基づいて前記温度制御弁の開閉を制御することを特徴とする2次冷媒の冷却循環方法。 - 前記2次冷媒リザーブタンク内の2次冷媒の液面の高さが、前記制御状態を切り替えるためのあらかじめ設定された高さのうちの最高位置よりも上の位置にあるときは、当該2次冷媒リザーブタンクへの2次冷媒の供給を停止することを特徴とする請求項4記載の2次冷媒の冷却循環方法。
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56168123U (ja) * | 1980-05-17 | 1981-12-12 | ||
JPS62171766U (ja) * | 1986-03-19 | 1987-10-31 | ||
JPH05136469A (ja) * | 1991-07-09 | 1993-06-01 | Aisin Seiki Co Ltd | 極低温冷凍装置 |
JP2001208436A (ja) * | 2000-01-28 | 2001-08-03 | Mayekawa Mfg Co Ltd | 臨界未満及び超臨界運転共用圧縮冷凍装置 |
JP2004286372A (ja) * | 2003-03-24 | 2004-10-14 | Sanyo Electric Co Ltd | 冷却装置 |
JP4068108B2 (ja) * | 2005-11-04 | 2008-03-26 | 大陽日酸株式会社 | 熱媒加熱冷却装置 |
CN201575547U (zh) * | 2009-12-31 | 2010-09-08 | 李志勇 | 无电源式单机空调 |
CN106795998A (zh) * | 2015-09-18 | 2017-05-31 | 有进超低温(株) | 基于lng再液化的冷热利用系统 |
JP2019117868A (ja) * | 2017-12-27 | 2019-07-18 | 株式会社前川製作所 | 超電導ケーブルの冷却装置及び昇温方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS536708U (ja) | 1976-06-30 | 1978-01-20 | ||
JP5306708B2 (ja) * | 2008-05-28 | 2013-10-02 | 大陽日酸株式会社 | 冷媒冷却装置 |
CN202452611U (zh) * | 2012-01-17 | 2012-09-26 | 江苏永昇空调有限公司 | 二氧化碳无源制冷空调 |
KR102537052B1 (ko) * | 2018-08-21 | 2023-05-30 | 한온시스템 주식회사 | 열관리 시스템 |
KR102120555B1 (ko) * | 2018-10-04 | 2020-06-16 | 한국조선해양 주식회사 | 액화가스 처리 시스템 및 이를 구비하는 액화가스 운반선 |
CN110454899A (zh) * | 2019-09-20 | 2019-11-15 | 苏州赛帕太阳能科技有限公司 | 一种温度调节器 |
CN210772851U (zh) * | 2019-09-25 | 2020-06-16 | 吉林省乾源能源开发有限公司 | 一种lng冷剂循环控制系统 |
-
2021
- 2021-07-07 JP JP2021112868A patent/JP7175353B1/ja active Active
-
2022
- 2022-07-06 WO PCT/JP2022/026801 patent/WO2023282280A1/ja active Application Filing
- 2022-07-06 CN CN202280025225.5A patent/CN117083493A/zh active Pending
- 2022-07-06 KR KR1020237030799A patent/KR20230134619A/ko not_active Application Discontinuation
- 2022-07-07 TW TW111125446A patent/TW202309455A/zh unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56168123U (ja) * | 1980-05-17 | 1981-12-12 | ||
JPS62171766U (ja) * | 1986-03-19 | 1987-10-31 | ||
JPH05136469A (ja) * | 1991-07-09 | 1993-06-01 | Aisin Seiki Co Ltd | 極低温冷凍装置 |
JP2001208436A (ja) * | 2000-01-28 | 2001-08-03 | Mayekawa Mfg Co Ltd | 臨界未満及び超臨界運転共用圧縮冷凍装置 |
JP2004286372A (ja) * | 2003-03-24 | 2004-10-14 | Sanyo Electric Co Ltd | 冷却装置 |
JP4068108B2 (ja) * | 2005-11-04 | 2008-03-26 | 大陽日酸株式会社 | 熱媒加熱冷却装置 |
CN201575547U (zh) * | 2009-12-31 | 2010-09-08 | 李志勇 | 无电源式单机空调 |
CN106795998A (zh) * | 2015-09-18 | 2017-05-31 | 有进超低温(株) | 基于lng再液化的冷热利用系统 |
JP2019117868A (ja) * | 2017-12-27 | 2019-07-18 | 株式会社前川製作所 | 超電導ケーブルの冷却装置及び昇温方法 |
Also Published As
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KR20230134619A (ko) | 2023-09-21 |
JP7175353B1 (ja) | 2022-11-18 |
JP2023009512A (ja) | 2023-01-20 |
CN117083493A (zh) | 2023-11-17 |
TW202309455A (zh) | 2023-03-01 |
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