JPH0480565A - Absorption refrigerating machine - Google Patents
Absorption refrigerating machineInfo
- Publication number
- JPH0480565A JPH0480565A JP19058790A JP19058790A JPH0480565A JP H0480565 A JPH0480565 A JP H0480565A JP 19058790 A JP19058790 A JP 19058790A JP 19058790 A JP19058790 A JP 19058790A JP H0480565 A JPH0480565 A JP H0480565A
- Authority
- JP
- Japan
- Prior art keywords
- low
- refrigerant
- pressure absorber
- condenser
- evaporator
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims description 31
- 239000006096 absorbing agent Substances 0.000 claims abstract description 42
- 239000003507 refrigerant Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000001816 cooling Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000002745 absorbent Effects 0.000 description 7
- 239000002250 absorbent Substances 0.000 description 7
- 239000003949 liquefied natural gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、吸収冷凍機に係り、特に、極低温の熱源から
、一般空調用に適した冷熱を効率よく取り出すことので
きる吸収冷凍機に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an absorption refrigerator, and more particularly to an absorption refrigerator that can efficiently extract cold heat suitable for general air conditioning from a cryogenic heat source. It is something.
従来、例えば液化天然ガス（ＬＮＧ、沸点は一１６０℃
）のごとく、沸点が一３０℃以下の極低温の液体を気化
させる際、その物質（ＬＮＧ）の気化熱に相当する熱量
の冷熱は得られるが、温度が低いため利用しにくい欠点
があった。Conventionally, for example, liquefied natural gas (LNG) has a boiling point of -160°C.
) When vaporizing an extremely low temperature liquid with a boiling point of 130 degrees Celsius or less, it is possible to obtain cold heat equivalent to the heat of vaporization of the substance (LNG), but the low temperature makes it difficult to use. .
そのため、これらの冷熱の利用は、液体酸素、液体窟素
、液体炭酸、ドライアイス等の製造、低温玲蔵庫、食品
冷凍等の極低温を用いる施設が主なものであった。Therefore, the main uses of this cold energy have been in facilities that use extremely low temperatures, such as in the production of liquid oxygen, liquid nitrogen, liquid carbon dioxide, dry ice, etc., as well as in low-temperature storage and food freezing.
本発明は、このような−３０℃以下の極低温の熱源の持
つ冷熱を利用して再竺器及び蒸発器から−りに利用し易
い０〜１５℃の冷熱を２倍以上に増幅して取り呂すこと
のできる吸収冷凍機を提供することを目的とする。The present invention uses the cold energy of such an extremely low temperature heat source of -30℃ or lower to amplify the cold energy of 0 to 15℃, which can be easily used from a refiller and an evaporator, by more than double. The purpose of the present invention is to provide an absorption refrigerating machine that can be used for cooling.
上記目的を達成するために、本発明では高圧吸収器、低
圧吸収器、再生器、凝縮器、蒸発器を主な構成要素とし
て、各機器を配管で結ぶとともに、低圧吸収器の作動圧
力を再生器の作動圧力よりも高く、蒸発器の作動圧力を
凝縮器の作動圧力よりも高くなるように構成し、凝縮器
で凝縮した冷媒と低圧吸収器の吸収溶液とを低圧吸収器
内で熱交換させるとともに、凝縮器内では低温の被加熱
媒体と冷媒を熱交換させ、再生器内では、被冷却媒体と
吸収溶液を熱交換させ、蒸発器内では被冷却媒体と冷媒
を熱交換させる様に構成したことを特徴とする吸収冷凍
機としたものである。In order to achieve the above object, the present invention uses a high-pressure absorber, a low-pressure absorber, a regenerator, a condenser, and an evaporator as main components, connects each device with piping, and regenerates the working pressure of the low-pressure absorber. The operating pressure of the evaporator is configured to be higher than the operating pressure of the condenser, and the refrigerant condensed in the condenser and the absorption solution of the low-pressure absorber are heat exchanged in the low-pressure absorber. At the same time, heat is exchanged between the low-temperature heated medium and the refrigerant in the condenser, heat is exchanged between the cooled medium and the absorption solution in the regenerator, and heat is exchanged between the cooled medium and the refrigerant in the evaporator. This is an absorption refrigerator characterized by the following configuration.
上記吸収冷凍機において、吸収溶液の経路は、高圧吸収
器を出た吸収溶液が、低圧吸収器、再生器、高圧吸収器
の順に循環するように構成するのがよい。In the above-mentioned absorption refrigerator, the path of the absorption solution is preferably configured such that the absorption solution leaving the high-pressure absorber circulates in the order of the low-pressure absorber, the regenerator, and the high-pressure absorber.
また、本発明では、吸収剤として水、冷媒としてアンモ
ニアを使用することができるが、他の組合せの吸収剤、
冷媒も使用できる。In addition, in the present invention, water can be used as an absorbent and ammonia can be used as a refrigerant, but other combinations of absorbents,
Refrigerants can also be used.
本発明の吸収冷凍機では、Ｖ縦画に一４０℃以下の低温
流体を通すことによって、低温流体の熱量の２倍近い５
℃前後の冷熱を取り出すことができる。In the absorption refrigerator of the present invention, by passing a low-temperature fluid at -40°C or less through the V-vertical line, the heat capacity of the low-temperature fluid is nearly twice as high as 5.
Cold heat around ℃ can be extracted.
次に、第２図のジコーリング線図上のサイクルにより説
明する。ここでは、冷媒にアンモニア、吸収剤に水を用
いており、再生器にて、吸収溶液は、冷水から熱を得て
（冷水を冷やして）沸騰し、冷媒蒸気を放出して、吸収
剤濃度が上昇する。放出された冷媒蒸気は！！縮縮型冷
却されて液化する。この冷媒液は、低圧吸収器を冷却し
て蒸発器に入る。再生器を出た溶液（濃縮液）は、溶液
熱交換器で希溶液と熱交換して、高圧吸収器に入る。高
圧吸収器にて、蒸発器からの冷媒蒸気の−８を吸収し・
て希くなる。吸収の際の吸収熱は、冷却水で除去する。Next, a description will be given using a cycle on the Zicoring diagram shown in FIG. Here, ammonia is used as the refrigerant and water is used as the absorbent. In the regenerator, the absorbent solution obtains heat from the cold water (chills the cold water) and boils, releasing refrigerant vapor and increasing the concentration of the absorbent. rises. The refrigerant vapor released! ! Condensation type Cools and liquefies. This refrigerant liquid cools the low pressure absorber and enters the evaporator. The solution (concentrate) leaving the regenerator exchanges heat with the dilute solution in a solution heat exchanger, and then enters the high-pressure absorber. The high-pressure absorber absorbs -8 of the refrigerant vapor from the evaporator.
It becomes rare. The heat absorbed during absorption is removed with cooling water.
次で希溶液は、凝縮器からの冷媒液で冷却されている低
圧吸収器に入り、蒸発器からの冷媒蒸気の残部を吸収し
てより希くなる。蒸発器では冷媒の蒸発により冷水が冷
やされる。低圧吸収器を出た希溶液は熱交換器を経て再
生器に入り、サイクル−巡する。The dilute solution then enters a low pressure absorber which is cooled with refrigerant liquid from the condenser and becomes more dilute by absorbing the remainder of the refrigerant vapor from the evaporator. In the evaporator, chilled water is cooled by evaporation of the refrigerant. The dilute solution leaving the low pressure absorber passes through a heat exchanger and enters a regenerator for cycling.
また、第３図には、本発明で用いる吸収冷凍機を濃度−
エンタルピ線図のサイクルで示したものである。第３図
で横軸は濃度（ＮＨｓ／ＮＨ３＋）１．０ ） 、ｍ軸
はエンタルピ（にＪ／ｋｇ）を示す。希溶液は濃度０．
５０（５０％）で、濃溶液は濃度０．４１（４１％）で
ある。また、再生器は、低圧で０．８ ｂａｒで、吸収
器は高圧６ ｂａｒである。In addition, FIG. 3 shows the absorption refrigerator used in the present invention at a concentration of
It is shown as a cycle of an enthalpy diagram. In FIG. 3, the horizontal axis shows the concentration (NHs/NH3+) (1.0), and the m axis shows the enthalpy (in J/kg). A dilute solution has a concentration of 0.
50 (50%) and the concentrated solution has a concentration of 0.41 (41%). Also, the regenerator has a low pressure of 0.8 bar and the absorber has a high pressure of 6 bar.
この圧力を濃度１．０すなわち、１００％冷媒とすると
、蒸発器温度は５℃で凝縮器温度−４０℃となる。If this pressure is a concentration of 1.0, that is, 100% refrigerant, the evaporator temperature will be 5°C and the condenser temperature will be -40°C.
低圧吸収器をもうけ、凝縮器からの低温冷媒液で希溶液
を冷却すると、冷却水で冷却した場合よりも、希溶液の
吸収能力を高め、蒸発器からの冷媒蒸気を吸収可能とし
たものである。濃度中を広げた分玲凍能力が増大する。By installing a low-pressure absorber and cooling the dilute solution with low-temperature refrigerant liquid from the condenser, the absorption capacity of the dilute solution is increased compared to cooling with cooling water, making it possible to absorb refrigerant vapor from the evaporator. be. The freezing ability increases by expanding the concentration.
以下、本発明を実施例で図面を用いて詳しく説明するが
、本発明は、これに限定されるものではない。Hereinafter, the present invention will be explained in detail with reference to Examples and drawings, but the present invention is not limited thereto.
実施例１
第１図は、本発明の吸収冷凍機の一例を示す系統図であ
る。第１図において、１は高圧吸収器、２は低圧吸収器
、３は再生器、４は８ｉ縮器、５は蒸発器、６は熱交換
器、７．８はポンプをそれぞれ示し、１１〜１５は吸収
溶液配管、１６〜２０は冷媒配管を示している。Embodiment 1 FIG. 1 is a system diagram showing an example of an absorption refrigerator of the present invention. In FIG. 1, 1 is a high-pressure absorber, 2 is a low-pressure absorber, 3 is a regenerator, 4 is an 8i condenser, 5 is an evaporator, 6 is a heat exchanger, 7.8 is a pump, and 11- Reference numeral 15 indicates an absorption solution pipe, and reference numerals 16 to 20 indicate refrigerant pipes.
次に、この吸収冷凍機の作動状態を説明する。Next, the operating state of this absorption refrigerator will be explained.
この例では、冷媒にアンモニアＳ吸収剤に水を用いてい
るが、他の組合せも使用できる。また、低温の被加熱媒
体（低熱源媒体）としては、液化ＬＮＧを使用している
。In this example, water is used as the refrigerant and the ammonia S absorbent, but other combinations can also be used. Furthermore, liquefied LNG is used as a low-temperature heated medium (low heat source medium).
まず、高圧吸収器１では、吸収剤が管１５から導入され
て、管１９からの冷媒蒸気を吸収する。高圧吸収器１内
は冷却水２１で冷却されて吸収熱を除去している。冷媒
を吸収した吸収溶液は、管】１から低圧吸収器２に導入
され、管１９から分岐した管２０からの冷媒蒸気を更に
吸収する。低圧吸収器２内は、凝縮器４で凝縮した冷媒
で冷却されている。冷媒蒸気を更に吸収した吸収溶液は
、低圧吸収器２から管１２を通り、熱交換器の加熱側を
通り管１３から、再生器３に導入される。再生器３内に
は、被冷却媒体である冷水２２が通っており、この冷水
から熱を奪い、吸収溶液から冷媒が蒸発する。冷媒が蒸
発した吸収溶液は、再生器３から管１４を通って、ポン
プ７により昇圧されて、熱交換器６の被加熱側を通って
管１５より、高圧吸収器１に導入され、循環する。First, in the high-pressure absorber 1, an absorbent is introduced through the pipe 15 and absorbs refrigerant vapor from the pipe 19. The inside of the high-pressure absorber 1 is cooled with cooling water 21 to remove absorbed heat. The absorption solution that has absorbed the refrigerant is introduced into the low-pressure absorber 2 through the pipe 1 and further absorbs refrigerant vapor from the pipe 20 branched from the pipe 19. The inside of the low-pressure absorber 2 is cooled with refrigerant condensed in the condenser 4. The absorption solution, which has further absorbed refrigerant vapor, is introduced from the low-pressure absorber 2 through the pipe 12 and through the heating side of the heat exchanger through the pipe 13 into the regenerator 3. Cold water 22, which is a medium to be cooled, passes through the regenerator 3, and heat is removed from the cold water, causing the refrigerant to evaporate from the absorption solution. The absorption solution in which the refrigerant has evaporated passes through the pipe 14 from the regenerator 3, is pressurized by the pump 7, passes through the heated side of the heat exchanger 6, is introduced into the high-pressure absorber 1 through the pipe 15, and is circulated. .
一方再生器３で蒸発した冷媒蒸気は、再生器３から管１
６を通って凝縮器４に導入される。On the other hand, the refrigerant vapor evaporated in the regenerator 3 is transferred from the regenerator 3 to the pipe 1
6 and is introduced into the condenser 4.
凝縮器４内には、低熱源流体である液化ＬＮＧが管２４
で導入されて冷却され、冷媒蒸気が凝縮して液化する。In the condenser 4, liquefied LNG, which is a low heat source fluid, is contained in a pipe 24.
The refrigerant vapor condenses and liquefies.
液化した冷媒は、凝縮器４からポンプ８で昇圧されて管
２７を通り、低圧吸収器の冷却用として用いてから、管
１８を逆って蒸発器５に導入される。蒸発器５では、再
生器３で冷却された被冷却媒体である冷水が、管２３で
導入されており、この冷水から熱ヲ奪って、冷媒が蒸発
する。冷媒蒸気は、蒸発器５から管１９を通って、高圧
吸収器と低圧吸収器の両方に導入される。そして、蒸発
器でより冷却された冷水は、冷房用等に使用される。The liquefied refrigerant is pressurized from the condenser 4 by the pump 8, passes through the pipe 27, is used for cooling the low-pressure absorber, and is then introduced into the evaporator 5 through the pipe 18. In the evaporator 5, cold water, which is a medium to be cooled that has been cooled by the regenerator 3, is introduced through a pipe 23, and heat is taken away from the cold water to cause the refrigerant to evaporate. Refrigerant vapor is introduced from the evaporator 5 through pipe 19 into both the high pressure absorber and the low pressure absorber. The cold water further cooled by the evaporator is used for cooling purposes.
この吸収冷凍機においては凝縮器に一４０℃以下の低温
流体を通すことによって、低温流体の熱量の２倍近い５
℃前後の冷熱を取り出すことができる。In this absorption refrigerator, by passing a low-temperature fluid of -40℃ or less through the condenser, the heat capacity of the low-temperature fluid is nearly twice as high as 5.
Cold heat around ℃ can be extracted.
［発明の効果］
本発明によれば、次のような効果を奏することができる
。[Effects of the Invention] According to the present invention, the following effects can be achieved.
３０℃以下の極低温熱源から０〜１５℃の利用し易い冷
熱を２倍以上に増幅して取り出すことができるため、
１）極低温熱源エネルギの有効利用が図れ、２）極低温
熱源エネルギの利用拡大が図れ、３）安価な冷熱の供給
が可能になる。（排熱の有効利用）
といった経済的効果がある。Since it is possible to amplify and extract easily usable cold heat of 0 to 15 degrees Celsius by more than twice from a cryogenic heat source of 30 degrees Celsius or less, it is possible to: 1) effectively utilize cryogenic heat source energy; and 2) improve the efficiency of cryogenic heat source energy. 3) It becomes possible to supply low-cost cooling and heat. There are economic effects such as (effective use of waste heat).
また、冷凍サイクル上では、冷媒の持つ顕熱を利用して
吸収溶液の作ｉｌ］濃度巾を広げたため、サイクル効率
を向上させることができ、エネルギの一層の有効利用が
図れる。Furthermore, in the refrigeration cycle, the sensible heat of the refrigerant is used to widen the concentration range of the absorbing solution, thereby improving cycle efficiency and making more effective use of energy.
第１図は本発明の吸収冷凍機の一例を示す系統図、第２
図は本発明の吸収冷凍機のジューリング線図上のサイク
ル図、第３図は濃度−エンタルピｍ図上のサイクル図で
ある。
１・・・高圧吸収器、２・・・低圧吸収器、３・・・再
生器、４・・・凝縮器、５・・・蒸発器、６・・・熱交
換器、７．８・・・ポンプ、１１〜１５−・・吸収溶液
配管、１６〜２０・・・冷媒配管、２１・・・冷却水、
２２・・・冷水、２４・・・液化ＬＮＧ
特許出願人 株式会社荏原製作所FIG. 1 is a system diagram showing an example of an absorption refrigerator of the present invention, and FIG.
The figure is a cycle diagram on a Juhring diagram of the absorption refrigerator of the present invention, and FIG. 3 is a cycle diagram on a concentration-enthalpy m diagram. 1... High pressure absorber, 2... Low pressure absorber, 3... Regenerator, 4... Condenser, 5... Evaporator, 6... Heat exchanger, 7.8...・Pump, 11-15--absorption solution piping, 16-20...refrigerant piping, 21...cooling water,
22... Cold water, 24... Liquefied LNG Patent applicant Ebara Corporation
Claims (1)
を主な構成要素として、各機器を配管で結ぶとともに、
低圧吸収器の作動圧力を再生器の作動圧力よりも高く、
蒸発器の作動圧力を凝縮器の作動圧力よりも高くなるよ
うに構成し、凝縮器で凝縮した冷媒と低圧吸収器の吸収
溶液とを低圧吸収器内で熱交換させるとともに、凝縮器
内では低温の被加熱媒体と冷媒を熱交換させ、再生器内
では、被冷却媒体と吸収溶液を熱交換させ、蒸発器内で
は被冷却媒体と冷媒を熱交換させる様に構成したことを
特徴とする吸収冷凍機。 ２、吸収溶液の経路は、高圧吸収器を出た吸収溶液が、
低圧吸収器、再生器、高圧吸収器の順に循環させるよう
に構成したことを特徴とする請求項１記載の吸収冷凍機
。[Claims] 1. The main components are a high-pressure absorber, a low-pressure absorber, a regenerator, a condenser, and an evaporator, and each device is connected with piping,
The working pressure of the low pressure absorber is higher than the working pressure of the regenerator,
The operating pressure of the evaporator is configured to be higher than the operating pressure of the condenser, and the refrigerant condensed in the condenser and the absorption solution in the low-pressure absorber exchange heat in the low-pressure absorber, and the temperature is maintained at a low temperature in the condenser. The absorber is characterized in that it is configured to exchange heat between the medium to be heated and the refrigerant, to exchange heat between the medium to be cooled and the absorption solution in the regenerator, and to exchange heat between the medium to be cooled and the refrigerant in the evaporator. refrigerator. 2. The path of the absorption solution is that the absorption solution leaving the high pressure absorber is
2. The absorption refrigerating machine according to claim 1, wherein the absorption refrigerator is configured to circulate in the order of a low pressure absorber, a regenerator, and a high pressure absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19058790A JPH0480565A (en) | 1990-07-20 | 1990-07-20 | Absorption refrigerating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19058790A JPH0480565A (en) | 1990-07-20 | 1990-07-20 | Absorption refrigerating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0480565A true JPH0480565A (en) | 1992-03-13 |
Family
ID=16260549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19058790A Pending JPH0480565A (en) | 1990-07-20 | 1990-07-20 | Absorption refrigerating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0480565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013181723A (en) * | 2012-03-05 | 2013-09-12 | Hitachi Appliances Inc | Absorption type refrigerating machine |
-
1990
- 1990-07-20 JP JP19058790A patent/JPH0480565A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013181723A (en) * | 2012-03-05 | 2013-09-12 | Hitachi Appliances Inc | Absorption type refrigerating machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2890330T3 (en) | Hybrid absorption-compression refrigerator and a related method of providing cooling effect | |
| JP2897587B2 (en) | Absorption refrigerator | |
| JPH0953864A (en) | Engine type cooling device | |
| JPH0480565A (en) | Absorption refrigerating machine | |
| KR100981672B1 (en) | Two-stage driven hot water absorption chiller | |
| JP2776200B2 (en) | Absorption type ice cold storage device | |
| JPH0480566A (en) | Absorption refrigerating machine | |
| JPH0480564A (en) | Operating method for absorption refrigerating machine | |
| KR101103337B1 (en) | Gas Precooling Equipment for Natural Gas Liquefaction Using Absorption Refrigeration | |
| JPS5832301B2 (en) | absorption refrigerator | |
| JPH1114172A (en) | Binary codling facility and binary cooling method utilizing heat storage of dry ice | |
| JPS582564A (en) | Composite absorption type refrigerator | |
| CN210980422U (en) | Waste heat recycling refrigeration system based on lithium bromide refrigeration | |
| JP2004069276A (en) | Waste heat recovering cooling system | |
| JP2000274860A (en) | Heat pump cycle type absorption refrigerating and heating simultaneously taking-out machine and method | |
| KR100827569B1 (en) | Absorption refrigerating apparatus with heat pump | |
| JPH01208668A (en) | Heat storage type cold and hot heat generating device | |
| JPH0113969Y2 (en) | ||
| JPH09273817A (en) | Low temperature generator | |
| JPH05264120A (en) | Combined refrigerating device | |
| US1369365A (en) | Method of refrigeration | |
| JPS60126558A (en) | Absorption type refrigerator | |
| JP2005344973A (en) | Adsorption type refrigeration machine | |
| JPH06103131B2 (en) | Absorption refrigeration system | |
| JP2003121026A (en) | Hydrogen absorbing alloy refrigerating system |