JP2002349996A - Exhaust heat recovery air conditioner - Google Patents
Exhaust heat recovery air conditionerInfo
- Publication number
- JP2002349996A JP2002349996A JP2001160359A JP2001160359A JP2002349996A JP 2002349996 A JP2002349996 A JP 2002349996A JP 2001160359 A JP2001160359 A JP 2001160359A JP 2001160359 A JP2001160359 A JP 2001160359A JP 2002349996 A JP2002349996 A JP 2002349996A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- heat
- air conditioner
- cooling
- heat source
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気調和装置に係
り、特に、エンジン、タービン、燃料電池等からの排熱
を熱源とする吸収冷温水機からの冷温水を用いる圧縮冷
凍機による空気調和装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner using a compression chiller that uses cold and hot water from an absorption chiller and hot water that uses exhaust heat from engines, turbines, fuel cells, and the like as a heat source. Related to the device.
【０００２】[0002]
【従来の技術】コージェネレーションシステムでは、電
気と共に、比較的温度の低い温水が供給される。この温
水は、温度があまり高くなく、低ポテンシャルエネルギ
に分類され、給湯又は暖房に利用されることが多い。最
近は、吸収冷凍機の熱源として冷房に利用することも多
くなってきている。コージェネレーションシステムの中
で、この温水は、エンジンの冷却（ジャケット温水）あ
るいはエンジン排気からの熱回収、あるいは、燃料電池
の場合の冷却用として得られる。低ポテンシャルエネル
ギ単独で、吸収冷凍機を運転する場合もあるが、複合冷
房装置として、高ポテンシャルエネルギと共に用い、必
要とする高ポテンシャルエネルギの量を減らそうという
使い方も提案され、採用され出している。2. Description of the Related Art In a cogeneration system, hot water having a relatively low temperature is supplied together with electricity. This hot water is not very hot, is classified as low potential energy, and is often used for hot water supply or heating. Recently, it has been increasingly used as a heat source of an absorption refrigerator for cooling. In the cogeneration system, this hot water is obtained for cooling the engine (jacket hot water), recovering heat from the engine exhaust, or cooling in the case of a fuel cell. In some cases, the absorption refrigerator is operated by low potential energy alone, but a method of using the combined cooling device together with high potential energy to reduce the amount of required high potential energy has been proposed and adopted. .
【０００３】ところで、低ポテンシャルエネルギ単独で
吸収冷温水機を運転する場合、冷暖負荷に対応した負荷
能力を取り出すことは、排熱の供給が不安定であるので
困難であり、また、これを解決するために、吸収冷凍機
の冷熱を圧縮冷凍機の放熱源として用いて循環冷媒を冷
却する冷凍装置が知られている（特開平１１−２２３４
１２号公報）。しかし、この冷凍装置においては、圧縮
冷凍機の熱源側熱交換器が、空気による冷却と吸収冷凍
機による冷却を直列に設けており、冷房負荷に関係なく
吸収冷凍機を運転しており、排熱供給や冷房負荷の増減
に対しての対応が不充分であった。When an absorption chiller / heater is operated with low potential energy alone, it is difficult to obtain a load capacity corresponding to a cooling / heating load because the supply of exhaust heat is unstable. For this purpose, there is known a refrigeration apparatus that cools a circulating refrigerant by using cold heat of an absorption refrigerator as a heat radiation source of a compression refrigerator (JP-A-11-2234).
No. 12). However, in this refrigeration system, the heat source side heat exchanger of the compression chiller provides cooling by air and cooling by the absorption chiller in series, and operates the absorption chiller regardless of the cooling load. The response to the increase or decrease in heat supply and cooling load was insufficient.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記従来技
術に鑑み、冷暖房負荷及び排熱の状態に応じて、圧縮冷
凍機の各熱源側熱交換器に接続する圧縮機の運転状態を
調節でき、経済的で効率のよい運転ができる空気調和装
置を提供することを課題とする。SUMMARY OF THE INVENTION In view of the above prior art, an object of the present invention is to adjust the operation state of a compressor connected to each heat source side heat exchanger of a compression refrigerator according to the state of a cooling / heating load and exhaust heat. It is an object of the present invention to provide an air conditioner which can be operated economically and efficiently.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、再生器、凝縮器、吸収器及び蒸発器を
備え、排熱を前記再生器の熱源とする吸収冷温水機と、
複数台の圧縮機及びそれに対応する複数台の熱源側熱交
換器、１台以上の利用側熱交換器を備え、前記圧縮機と
それに対応する熱源側熱交換器とを直列に冷媒回路で接
続し、前記利用側熱交換器を該冷媒回路に並列に冷媒回
路で接続した圧縮冷凍機とからなる空気調和装置であっ
て、前記第１の圧縮機に対応する第１熱源側熱交換器
が、前記吸収冷温水機の冷温水及び吸収冷温水機用冷却
塔の冷却水のいずれか一方、又は両方と熱交換関係にあ
り、それ以外の熱源側熱交換器が、外気又は冷却水と熱
交換関係にあることを特徴とする空気調和装置としたも
のである。前記空気調和装置において、圧縮冷凍機の第
１圧縮機の能力は、前記吸収冷温水機の冷温水の温度又
は温度に関連する物理量を基に、調節する手段を有する
ことができ、また、前記圧縮冷凍機は、前記吸収冷温水
機１台に対し、複数台接続することができ、その場合、
前記圧縮冷凍機の接続台数は、吸収冷温水機の冷温水の
温度又は温度に関連する物理量を基に、増減させる手段
を有することができる。According to the present invention, there is provided an absorption chiller / heater comprising a regenerator, a condenser, an absorber and an evaporator, wherein exhaust heat is used as a heat source of the regenerator. ,
A plurality of compressors and a plurality of heat source side heat exchangers corresponding thereto, one or more utilization side heat exchangers are provided, and the compressor and the corresponding heat source side heat exchangers are connected in series by a refrigerant circuit. An air conditioner including a compression refrigerator in which the use side heat exchanger is connected to the refrigerant circuit in parallel with the refrigerant circuit, wherein a first heat source side heat exchanger corresponding to the first compressor is provided. A heat exchange relationship with one or both of the cooling water of the absorption chiller / heater and the cooling water of the absorption chiller / heater cooling tower, and the other heat source-side heat exchanger is connected to the outside air or the cooling water. This is an air conditioner characterized by having an exchange relationship. In the air conditioner, the capacity of the first compressor of the compression refrigerator may have a means for adjusting based on a temperature or a physical quantity related to the temperature of the hot and cold water of the absorption chiller / heater, and A plurality of compression chillers can be connected to one absorption chiller / heater, in which case,
The number of connected compression chillers may include a unit for increasing or decreasing the number based on the temperature of the chilled / hot water of the absorption chiller / heater or a physical quantity related to the temperature.
【０００６】[0006]
【発明の実施の形態】本発明は、圧縮冷凍機に複数の圧
縮機とそれに対応する熱源側熱交換器とを直列に冷媒回
路で接続したものであり、そのうち第１熱源側熱交換器
のみが、吸収冷温水機の冷温水又は吸収冷温水機用冷却
塔の冷却水のいずれか一方、又は両方と熱交換関係にあ
ることとしたものである。冷えば、圧縮冷凍機に、第１
圧縮機、第２圧縮機、第１熱源側熱交換器、第２熱源側
熱交換器、１台以上の利用側熱交換器を備える場合、第
１圧縮機と第１熱源側熱交換器とを直列に第１冷媒回路
で接続、第２圧縮機と第２熱源側熱交換器とを直列に第
２冷媒回路で接続し、利用側熱交換器を第１冷媒回路と
第２冷媒回路とに並列に冷媒回路で接続しており、前記
の第１熱源側熱交換器のみが、吸収冷温水機の出力であ
る冷温水と熱交換させることとしている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a compression refrigerator in which a plurality of compressors and a corresponding heat source side heat exchanger are connected in series by a refrigerant circuit, and only the first heat source side heat exchanger is provided. Is in a heat exchange relationship with one or both of the cooling water of the absorption chiller / heater and the cooling water of the cooling tower for the absorption chiller / heater. When cooled, the first
When a compressor, a second compressor, a first heat source side heat exchanger, a second heat source side heat exchanger, and one or more utilization side heat exchangers are provided, the first compressor and the first heat source side heat exchanger Are connected in series by a first refrigerant circuit, the second compressor and the second heat source side heat exchanger are connected in series by a second refrigerant circuit, and the use side heat exchanger is connected to the first refrigerant circuit and the second refrigerant circuit. Are connected in parallel by a refrigerant circuit, and only the first heat-source-side heat exchanger exchanges heat with the cold / hot water that is the output of the absorption chiller / heater.
【０００７】次に、図面を用いて本発明を詳細に説明す
る。図１に、本発明の空気調和装置を冷房専用に用いた
場合のフロー構成図を示す。図１において、１は吸収冷
温水機、２は冷却塔、３は圧縮冷凍機、４は冷却塔の冷
却水で冷却する冷却水熱交換器、５ａ、５ｂは熱源側熱
交換器、６ａ、６ｂは圧縮機、７は利用側熱交換器（室
内器）、８は減圧機構、Ｅは蒸発器、Ａは吸収器、Ｇは
再生器、Ｃは凝縮器であり、１１、１２は熱輸送媒体用
配管、１３は冷却水配管、１４、１５、１６は冷媒配管
を示す。図１の冷房運転について説明すると、吸収冷温
水機１では、再生器Ｇに排熱１７が導入されて、蒸発器
Ｅから冷熱が取り出され、冷却塔２では、冷却ポンプ１
９の稼動により冷却水が管１３を通り循環され、冷却水
熱交換器４と吸収冷凍機１の吸収器Ａと凝縮器Ｃを冷却
する。圧縮冷凍機３では、冷媒ガスが配管１４、１５を
通り、排熱により吸収冷温水機が冷房運転されている場
合は、冷媒ガスは圧縮機６ａで圧縮されて配管１４を通
り熱源側熱交換器５ａで冷却浄化され、減圧機構８で減
圧されて利用側熱交換器７でガス化されて冷熱を発生さ
せる。Next, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a flow configuration diagram when the air-conditioning apparatus of the present invention is used exclusively for cooling. In FIG. 1, 1 is an absorption chiller / heater, 2 is a cooling tower, 3 is a compression refrigerator, 4 is a cooling water heat exchanger for cooling with cooling water of a cooling tower, 5a and 5b are heat source side heat exchangers, 6a, 6b is a compressor, 7 is a use side heat exchanger (indoor unit), 8 is a decompression mechanism, E is an evaporator, A is an absorber, G is a regenerator, C is a condenser, and 11 and 12 are heat transporters. A medium pipe, 13 is a cooling water pipe, and 14, 15, and 16 are refrigerant pipes. Explaining the cooling operation in FIG. 1, in the absorption chiller / heater 1, exhaust heat 17 is introduced into the regenerator G, and cool heat is extracted from the evaporator E. In the cooling tower 2, the cooling pump 1
By the operation of 9, the cooling water is circulated through the pipe 13, and cools the cooling water heat exchanger 4, the absorber A and the condenser C of the absorption refrigerator 1. In the compression refrigerator 3, when the refrigerant gas passes through the pipes 14 and 15 and the absorption chiller / heater is operated for cooling by exhaust heat, the refrigerant gas is compressed by the compressor 6a, passes through the pipe 14, and exchanges heat on the heat source side. It is cooled and purified by the heat exchanger 5a, decompressed by the decompression mechanism 8 and gasified by the use side heat exchanger 7 to generate cold heat.
【０００８】そして、前記熱源側熱交換器５ａは、吸収
冷温水機１の蒸発器Ｅ及び冷却水熱交換器４と配管１
１、１２で接続されており、蒸発器Ｅ又は冷却水熱交換
器４からの冷熱を熱輸送媒体により熱源側熱交換器５ａ
に送って、圧縮機６ａからの冷媒を冷却する。また、配
管１１を流れる熱輸送媒体である蒸発器からの冷水の温
度を検出器１８で検出して、圧縮機６ａの能力を調節す
ることができる。このように、圧縮冷凍機の凝縮熱の一
部は、圧縮機６ａに接続する熱源側熱交換器５ａから吸
収冷温水機の蒸発器Ｅ又は冷却塔２に放出されて、冷熱
負荷に対応して調節しており、圧縮冷凍機の凝縮熱の残
部は、圧縮機６ａ以外の圧縮機６ｂから、熱源側熱交換
器５ｂから外気又は冷却水に放出される。吸収冷温水機
１は、駆動排熱１７が水でも、蒸気でも、排ガスでも差
支えなくまた、単効用だけでなく、多重効用であっても
差支えない。冷却塔２は、吸収冷温水機１用と、圧縮冷
凍機３用と兼用として示しているが、別個でも差支えな
い。The heat source side heat exchanger 5a is connected to the evaporator E and the cooling water heat exchanger 4 of the absorption chiller / heater 1 and the piping 1
1 and 12, the heat from the evaporator E or the cooling water heat exchanger 4 is transferred by the heat transport medium to the heat source side heat exchanger 5a.
To cool the refrigerant from the compressor 6a. Further, the temperature of the chilled water from the evaporator, which is the heat transport medium flowing through the pipe 11, can be detected by the detector 18 to adjust the capacity of the compressor 6a. As described above, a part of the heat of condensation of the compression refrigerator is discharged from the heat source side heat exchanger 5a connected to the compressor 6a to the evaporator E or the cooling tower 2 of the absorption chiller / heater, and corresponds to the cooling load. The remainder of the condensation heat of the compression refrigerator is discharged from the compressor 6b other than the compressor 6a to the outside air or the cooling water from the heat source side heat exchanger 5b. In the absorption chiller / heater 1, the drive exhaust heat 17 may be water, steam, or exhaust gas, and may be not only single-effect but also multi-effect. The cooling tower 2 is shown as being used for both the absorption chiller / heater 1 and the compression chiller 3, but may be used separately.
【０００９】図２は、本発明の空気調和装置を冷暖房用
に用いた場合のフロー構成図である。図２では、図１に
圧縮冷凍機の冷媒回路に四方弁１０と逆止弁９を配し
て、圧縮冷凍機をヒートポンプとして暖房用にも使用で
きるようにしたものである。図２において、この装置を
冷房用に用いる場合は、四方弁１０ａ、１０ｂを実線の
方向に冷媒液を流すことにより、前記図１と同様に作動
されて冷熱を発生し、冷房に供される。また、圧縮冷凍
機をヒートポンプ運転して暖房に用いる場合は、四方弁
１０ａ、１０ｂを点線の方向に冷媒液を流して、冷媒液
の流れ方向を逆にして利用側熱交換器７を凝縮器とし、
熱源側熱交換器５ａ、５ｂを蒸発器として作動させ、熱
源熱交換器５ａには吸収冷温水機１を暖房運転して、蒸
発器Ｅから温水を取り出して熱源熱交換器５ａに供給す
る。このように、吸収冷温水機を暖房運転して圧縮冷凍
機の低熱源とし、圧縮冷凍機をヒートポンプ運転して、
装置の暖房運転が可能となる。暖房運転の場合、冷却塔
は停止し、弁により冷媒回路から切り離している。FIG. 2 is a flow configuration diagram when the air conditioner of the present invention is used for cooling and heating. In FIG. 2, a four-way valve 10 and a check valve 9 are arranged in the refrigerant circuit of the compression refrigerator in FIG. 1, so that the compression refrigerator can be used as a heat pump for heating. In FIG. 2, when this device is used for cooling, the four-way valves 10a and 10b are operated in the same manner as in FIG. . When the compression refrigerator is used for heating by operating the heat pump, the four-way valves 10a and 10b allow the refrigerant liquid to flow in the direction of the dotted line, and the flow direction of the refrigerant liquid is reversed so that the use-side heat exchanger 7 is connected to the condenser. age,
The heat source side heat exchangers 5a and 5b are operated as evaporators, and the absorption chiller / heater 1 is operated for heating in the heat source heat exchanger 5a, and hot water is taken out from the evaporator E and supplied to the heat source heat exchanger 5a. In this way, the absorption chiller / heater is heated to operate as a low heat source of the compression refrigerator, and the compression refrigerator is operated as a heat pump,
The heating operation of the device becomes possible. In the case of the heating operation, the cooling tower is stopped and is separated from the refrigerant circuit by a valve.
【００１０】[0010]
【発明の効果】本発明によれば、圧縮冷凍機の熱源とし
て、排熱を利用する吸収冷温水機と、空冷又は冷却水と
の両方を利用することができ、吸収冷温水機の出力によ
り圧縮冷凍機の能力を調節できるので、排熱を有効に利
用して、圧縮冷凍機を効果的に運転することができた。According to the present invention, it is possible to use both an absorption chiller / heater utilizing exhaust heat and air cooling or cooling water as a heat source of a compression chiller. Since the capacity of the compression chiller can be adjusted, the compression chiller can be operated effectively by effectively using the exhaust heat.
【図１】本発明の空気調和装置の一例を示すフロー構成
図。FIG. 1 is a flowchart showing an example of an air conditioner of the present invention.
【図２】本発明の空気調和装置の他の例を示すフロー構
成図。FIG. 2 is a flow configuration diagram showing another example of the air conditioner of the present invention.
１：吸収冷温水機、２：冷却塔、３：圧縮冷凍機、４：
冷却水熱交換器、５ａ、５ｂ：熱源側熱交換器（室外
器）、６ａ、６ｂ：圧縮機、７：利用側熱交換器（室内
器）、８：減圧機構、９ａ、９ｂ：逆止弁、１０ａ、１
０ｂ：四方弁、１１、１２：熱輸送媒体用配管、１３：
冷却水配管、１４、１５、１６：冷媒配管、１７：排
熱、１８：温度検出器、１９：冷却ポンプ、Ｅ：蒸発
器、Ａ：吸収器、Ｇ：再生器、Ｃ：凝縮器1: absorption chiller / heater, 2: cooling tower, 3: compression refrigerator, 4:
Cooling water heat exchangers, 5a, 5b: heat source side heat exchangers (outdoor units), 6a, 6b: compressors, 7: use side heat exchangers (indoor units), 8: decompression mechanisms, 9a, 9b: non-return Valves, 10a, 1
0b: four-way valve, 11, 12: heat transport medium piping, 13:
Cooling water piping, 14, 15, 16: refrigerant piping, 17: exhaust heat, 18: temperature detector, 19: cooling pump, E: evaporator, A: absorber, G: regenerator, C: condenser
Claims (4)
え、排熱を前記再生器の熱源とする吸収冷温水機と、複
数台の圧縮機及びそれに対応する複数台の熱源側熱交換
器、１台以上の利用側熱交換器を備え、前記圧縮機とそ
れに対応する熱源側熱交換器とを直列に冷媒回路で接続
し、前記利用側熱交換器を該冷媒回路に並列に冷媒回路
で接続した圧縮冷凍機とからなる空気調和装置であっ
て、前記第１の圧縮機に対応する第１熱源側熱交換器
が、前記吸収冷温水機の冷温水及び吸収冷温水機用冷却
塔の冷却水のいずれか一方、又は両方と熱交換関係にあ
り、それ以外の熱源側熱交換器が、外気又は冷却水と熱
交換関係にあることを特徴とする空気調和装置。1. An absorption chiller / heater comprising a regenerator, a condenser, an absorber and an evaporator, wherein exhaust heat is used as a heat source of the regenerator, a plurality of compressors and a plurality of heat source side heats corresponding thereto. An exchanger, one or more use side heat exchangers, the compressor and the corresponding heat source side heat exchanger are connected in series by a refrigerant circuit, and the use side heat exchanger is connected in parallel to the refrigerant circuit. An air conditioner comprising a compression refrigerator connected by a refrigerant circuit, wherein a first heat source side heat exchanger corresponding to the first compressor is provided for a cold / hot water and an absorption chiller / heater of the absorption chiller / heater. An air conditioner having a heat exchange relationship with one or both of the cooling water of a cooling tower and another heat source side heat exchanger having a heat exchange relationship with the outside air or the cooling water.
前記吸収冷温水機の冷温水の温度又は温度に関連する物
理量を基に、調節する手段を有することを特徴とする請
求項１記載の空気調和装置。2. The capacity of a first compressor of the compression refrigerator is:
2. The air conditioner according to claim 1, further comprising means for adjusting the temperature of the hot and cold water of the absorption chiller / heater based on the temperature or a physical quantity related to the temperature.
対し、複数台接続することを特徴とする請求項１又は２
記載の空気調和装置。3. A plurality of compression refrigerators are connected to one absorption chiller / heater.
The air conditioner as described in the above.
水機の冷温水の温度又は温度に関連する物理量を基に、
増減させる手段を有することを特徴とする請求項３記載
の空気調和装置。4. The number of connected compression chillers is based on the temperature of cold or hot water of the absorption chiller / heater or a physical quantity related to the temperature.
The air conditioner according to claim 3, further comprising means for increasing or decreasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001160359A JP2002349996A (en) | 2001-05-29 | 2001-05-29 | Exhaust heat recovery air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001160359A JP2002349996A (en) | 2001-05-29 | 2001-05-29 | Exhaust heat recovery air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002349996A true JP2002349996A (en) | 2002-12-04 |
Family
ID=19003788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001160359A Pending JP2002349996A (en) | 2001-05-29 | 2001-05-29 | Exhaust heat recovery air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002349996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051788A (en) * | 2005-08-15 | 2007-03-01 | Daikin Ind Ltd | Refrigerating device |
| CN100443828C (en) * | 2005-09-20 | 2008-12-17 | 冯全琛 | Comprehensive refrigerating device |
| JP2010243079A (en) * | 2009-04-07 | 2010-10-28 | Daikin Ind Ltd | Refrigerating device |
| CN101949613A (en) * | 2010-06-18 | 2011-01-19 | 袁小艳 | Refrigerating-heat pump combined operation system for computer room |
-
2001
- 2001-05-29 JP JP2001160359A patent/JP2002349996A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051788A (en) * | 2005-08-15 | 2007-03-01 | Daikin Ind Ltd | Refrigerating device |
| CN100443828C (en) * | 2005-09-20 | 2008-12-17 | 冯全琛 | Comprehensive refrigerating device |
| JP2010243079A (en) * | 2009-04-07 | 2010-10-28 | Daikin Ind Ltd | Refrigerating device |
| CN101949613A (en) * | 2010-06-18 | 2011-01-19 | 袁小艳 | Refrigerating-heat pump combined operation system for computer room |
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