CN110753477A - Air-water cooling system and method of high-voltage frequency converter suitable for low-temperature environment - Google Patents
Air-water cooling system and method of high-voltage frequency converter suitable for low-temperature environment Download PDFInfo
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- CN110753477A CN110753477A CN201910909916.1A CN201910909916A CN110753477A CN 110753477 A CN110753477 A CN 110753477A CN 201910909916 A CN201910909916 A CN 201910909916A CN 110753477 A CN110753477 A CN 110753477A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a high-voltage inverter air-water cooling system suitable for a low-temperature environment, which comprises a water cooling cabinet, an air-water cooling radiator communicated with the water cooling cabinet through a circulation pipeline A, a circulation pipeline B communicated with the circulation pipeline A to form a closed circuit, and a cooling device arranged on the circulation pipeline B, wherein a cooling medium is circulated in the circulation pipeline A in a circulating manner, the cooling medium is water glycol, and the cooling device exchanges heat with the cooling medium in the circulation pipeline B. The invention has the beneficial effects that: according to the scheme, the water glycol is used as the cooling medium, the cooling system can run under the low-temperature condition of 40 ℃ below zero, the application range of the cooling system is enlarged, the influence of a low-temperature environment on the cooling system is reduced, the hot air of the high-voltage frequency converter is cooled by the water glycol, the cooling energy consumption is lower than that of a cabinet air conditioner under the condition that the cooling effect is the same, and the problem that the cooling medium is cooled to expand the volume and burst equipment and pipelines is avoided.
Description
Technical Field
The invention relates to the technical field of cooling systems, in particular to a high-voltage frequency converter air-water cooling system and method suitable for a low-temperature environment.
Background
At present, the cooling of the 220KV high-voltage high-power frequency converter of a thermal power plant and a hydroelectric power plant generally has the following problems: 1. the cabinet air conditioner is used for cooling, so that the power is high, and energy is not saved; 2. the cooling tower is used for supplying cold water as a medium, and the hot air brought out from the frequency converter by the axial flow fan is cooled by the air-water cooler, so that the cooling tower can be only used in regions in the south and with the temperature always higher than 0 ℃, otherwise, the equipment can be damaged by freezing and expanding water in winter.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the air-water cooling system of the high-voltage frequency converter, which is suitable for a low-temperature environment, reduces the influence of environmental factors on the cooling system, and reduces the energy consumption of the cooling system.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a high-voltage inverter air-water cooling system suitable for low temperature environment, includes the water-cooling cabinet, through the air-water cooling radiator of A circulating line and water-cooling cabinet intercommunication, communicate into closed B circulating line and the cooling device of setting on B circulating line with A circulating line, A circulating line in the circulation flow through have coolant, coolant adopt water ethylene glycol, coolant in cooling device and the B circulating line carries out the heat exchange.
Further, in order to better implement the invention, the cooling device comprises a plate heat exchanger and/or a wind cooler.
Further, in order to better realize the invention, the plate heat exchanger and the air cooler are connected in series through a B circulation pipeline.
Further, in order to better realize the invention, the air-water cooling radiator is communicated with an air circulation pipeline which can be circularly communicated with the frequency converter, a medium in the air circulation pipeline exchanges heat with a cooling medium in the circulation pipeline A in the air-water cooling radiator, and the air circulation pipeline is provided with an air channel and an axial flow fan communicated between the air channel and the frequency converter.
Furthermore, in order to better realize the invention, an outlet pipeline communicated with an outlet of the circulation pipeline B and an inlet of the circulation pipeline A is arranged in the water cooling cabinet, a pressure measuring joint communicated with the outlet pipeline, a water pump body, a pressure transmitter communicated with the outlet pipeline through a ball valve B, a pressure measuring joint communicated with the outlet pipeline, a heater, a filter and a ball valve A communicated with the inlet of the circulation pipeline A are sequentially arranged on the outlet pipeline along the flowing direction of a cooling medium, and the water pump body is respectively communicated with a water pump motor and an automatic exhaust valve.
Furthermore, in order to better realize the invention, an inlet pipeline for communicating an outlet of the circulation pipeline A with an inlet of the circulation pipeline B is arranged in the water-cooling cabinet, a liquid-filled ball valve and a pressure transmitter which are respectively communicated with the inlet pipeline are sequentially arranged on the inlet pipeline along the flowing direction of a cooling medium, an outlet end of the inlet pipeline, an inlet end of the circulation pipeline B and an inlet end of the outlet pipeline are communicated with a three-way ball valve, an outlet end of the inlet pipeline is communicated with an inlet end of the three-way ball valve, and an inlet end of the inlet pipeline is communicated with the circulation pipeline A through the ball valve A.
Further, in order to better realize the invention, a safety pipeline is communicated with a pipeline between the heater and the filter, a ball valve B, a safety valve, a shock-resistant pressure gauge, an energy storage tank, a liquid-filled ball valve, an automatic exhaust valve and a ball valve B which are respectively communicated with the safety pipeline are sequentially arranged on the safety pipeline along the flowing direction of the cooling medium, and a pressure gauge switch is arranged between the safety valve and the safety pipeline.
Further, in order to better realize the invention, a ball valve A is communicated between the circulation pipeline B and the inlet pipeline, a ball valve B is communicated on a pipeline between the plate heat exchanger and the inlet pipeline, and an automatic exhaust valve and a ball valve B are respectively communicated on a pipeline between the air cooler and the outlet pipeline.
Furthermore, in order to better realize the invention, a plurality of air-water cooling radiators are arranged in series.
A high-voltage frequency converter air-water cooling method suitable for low-temperature environment is characterized in that water glycol is used as a cooling medium to cool hot air output by a frequency converter, and then cooled cold air circularly enters the frequency converter; the cooling medium heated to a high temperature after the heat exchange is cooled and circulated.
The beneficial effect that this scheme obtained is:
(1) according to the scheme, the water glycol is used as the cooling medium, so that the cooling system can operate at a low temperature of-40 ℃, the application range of the cooling system is enlarged, the influence of a low-temperature environment on the cooling system is reduced, the water glycol is used for cooling hot air of the high-voltage frequency converter, the cooling energy consumption is lower than that of a cabinet air conditioner under the condition of the same cooling effect, and the problem that the volume of the cooling medium expands to burst equipment and pipelines due to the fact that the cooling medium is cooled is avoided;
(2) this scheme can form confined cooling system, makes coolant and the wind circulation of refrigerated, can carry out long-term, continuous cooling to high-voltage inverter, is favorable to improving refrigerated efficiency, is convenient for realize high-voltage inverter's continuous use or be based on high-voltage inverter's continuous production, is favorable to improving production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic diagram of the present solution;
FIG. 3 is a schematic view of the interior of a water cooled cabinet;
FIG. 4 is a schematic view of a cooling device;
fig. 5 is a schematic diagram of the cooling of the frequency converter.
Wherein: 1-, 2-pressure transmitter, 3-B ball valve, 4-shock-resistant pressure gauge, 5-energy storage tank, 6-safety valve, 7-automatic exhaust valve, 8-pressure measuring joint, 9-liquid-filled ball valve, 10-heater, 11-air cooler, 12-three-way ball valve, 13-water pump motor, 14-water pump body, 15-filter, 16-A ball valve, 17-automatic exhaust valve, 18-plate heat exchanger, 19-air-water cooled radiator, 20-outlet pipeline, 21-inlet pipeline, 22-safety pipeline, 101-water cooling cabinet, 102-A circulating pipeline, 103-B circulating pipeline, 104-air circulating pipeline, 105-air channel, 106-axial flow fan and 107-frequency converter.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Example 1:
as shown in fig. 1, in this embodiment, a high-voltage inverter air-water cooling system suitable for a low-temperature environment includes a water-cooling cabinet 101, an air-water cooling radiator 19 communicated with the water-cooling cabinet 101 through an a circulation pipeline 102, a B circulation pipeline 103 communicated with the a circulation pipeline 102 to form a closed loop, and a cooling device disposed on the B circulation pipeline 103, wherein a cooling medium circulates in the a circulation pipeline 102, the cooling medium is water glycol, and the cooling device exchanges heat with the cooling medium in the B circulation pipeline 103.
The water cooling cabinet 101 is used for controlling a cooling medium to circulate in the A circulation pipeline 102 and the B circulation pipeline 103, the cooling device is used for cooling the cooling medium heated by heat exchange, the cooling medium cooled by the cooling device is driven by the water cooling cabinet 101 to enter the air-water cooling radiator 19 through the A circulation pipeline 102 to absorb heat by heat exchange so as to cool other media, the cooling medium heated by heat absorption is heated and enters the B circulation pipeline 103 through the A circulation pipeline 102 under the action of the water cooling cabinet 101, and the cooling device is used for cooling the cooling medium heated by heat exchange so as to realize the function of circulating cooling.
The scheme adopts water glycol with the temperature of 40 ℃ below zero as a cooling medium, the water glycol is a transparent true solution with 35-55% of water formed by dissolving ethylene glycol, propylene glycol or a polymer thereof in water, and corresponding additives such as viscosity increasing, wear resistance, rust prevention, defoaming and the like are also added. It has good anti-flammability, and low temperature mobility and stability are the anti-flammability hydraulic medium of an ideal, consequently can make this scheme be applicable to 40 ℃ below zero microthermal environment, can cool down the cooling process to the high-voltage inverter of work in 40 ℃ below zero low temperature.
Compared with the direct cooling by a cabinet air conditioner, the energy consumption of the scheme is lower. The cooling device is used for cooling the cooling medium, so that the concentrated cooling can be realized, the volume of the equipment is reduced, the occupied space of the equipment is reduced, the heat exchange efficiency is improved, and the energy consumption is reduced.
Example 2:
as shown in fig. 1 and 2, in the present embodiment, on the basis of the above embodiments, the cooling device includes a plate heat exchanger 18 and/or a wind cooler 11.
In summer, because the ambient temperature is high, the cooling effect of the air cooler 11 is not ideal, so the air cooler 11 is not used, water supplied by the condensing tower cools water glycol medium in a closed system through the plate heat exchanger 18, the water glycol cools hot air conveyed out by the axial flow fan 106 from the frequency converter 107 in the air-water cooling heat exchanger 19, and cooled cold air enters the frequency converter 107 again from the lower side of the frequency converter 107 to form circulating cooling.
In winter, the equipment is damaged due to the icing of water, and at the moment, the water in the plate heat exchanger 18 is discharged, so that the plate heat exchanger 18 does not work; in winter, the air cooler 11 has good cooling effect due to low air temperature, so the air cooler 11 cools the water glycol in the closed system, the water glycol cools the hot air conveyed from the frequency converter 107 by the axial flow fan 106 in the air-water cooling heat exchanger 19, and the cooled cold air enters the frequency converter 107 again from the lower side of the frequency converter 107 to form circulating cooling.
In order to avoid repeated switching of the cooling device, the plate heat exchanger 18 and the or wind cooler 11 are connected in series via a B-cycle pipe 103. When the plate heat exchanger 18 or the air cooler 11 is not required to be used, it is electrically cut off, and only a passage for the circulation of the cooling medium is formed, and another cooling device is separately used, thereby facilitating control. The plate heat exchanger 18 and the air cooler 11 can be used together to improve the cooling efficiency of the cooling medium.
Example 3:
as shown in fig. 5, in the present embodiment, in addition to the above-described embodiments, the air-water-cooled radiator 19 is communicated with an air circulation duct 104 capable of being in circulation communication with the inverter 107, the medium in the air circulation duct 104 and the cooling medium in the a circulation duct 102 exchange heat in the air-water-cooled radiator 19, and the air circulation duct 104 is provided with an air duct 105 and an axial flow fan 106 communicating between the air duct 105 and the inverter 107.
The hot air in the frequency converter 107 is sucked into the air circulation pipeline 104 by the axial flow fan 106, and when the hot air passes through the air-water cooling radiator 19, the hot air exchanges heat with the cooling medium in the circulation pipeline 102 a to reduce the temperature to be cold air, and the cold air circularly enters the frequency converter 107 through the air circulation pipeline 104 by the driving force of the axial flow fan 106 to play a role in reducing the temperature.
The air and the cooling medium are circulated, the material utilization rate and the energy utilization rate can be improved, the energy loss is reduced, the continuous cooling is favorably formed, and the influence on the normal use caused by the fact that external impurities enter a cooling system or a frequency converter 107 is avoided.
Example 4:
as shown in fig. 2 and 3, in addition to the above-described embodiments, in the present embodiment, an outlet pipe 20 that communicates an outlet of the B circulation pipe 103 with an inlet of the a circulation pipe 102 is provided in the water tank 1, a pressure measuring joint 8 that communicates with the outlet pipe 20, a water pump body 14, a pressure transmitter 2 that communicates with the outlet pipe 20 via the B ball valve 3, a pressure measuring joint 8 that communicates with the outlet pipe 20, a heater 10, a filter 15, and an a ball valve 16 that communicates with the inlet of the a circulation pipe 102 are provided in this order along the direction in which the cooling medium flows, and the water pump body 14 communicates with the water pump motor 13 and the automatic exhaust valve 7, respectively.
The water pump motor 13 is used for driving the water pump body 14, the water pump body 14 provides power for circulating and circulating of the cooling medium, and the automatic exhaust valve 7 is beneficial to exhausting redundant gas in the circulation pipeline of the circulation pipeline A102 and avoiding cavitation in the circulation pipeline.
The filter 15 can filter impurities mixed in the cooling medium to prevent clogging or corrosion.
The pressure of the cooling medium in the outlet pipeline 20 can be measured in real time by using the pressure measuring joint 8, so that whether an abnormal phenomenon exists or not can be monitored, and the safety performance can be improved.
An inlet pipeline 21 for communicating an outlet of the circulation pipeline 102A with an inlet of the circulation pipeline 103B is arranged in the water cooling cabinet 1, a liquid filling ball valve 9 and a pressure transmitter 2 which are respectively communicated with the inlet pipeline 21 are sequentially arranged on the inlet pipeline 21 along the flowing direction of a cooling medium, a three-way ball valve 12 is communicated with an outlet end of the inlet pipeline 21, an inlet end of the circulation pipeline 103B and an inlet end of the outlet pipeline 20, an outlet end of the inlet pipeline 21 is communicated with an inlet end of the three-way ball valve 12, and an inlet end of the inlet pipeline 21 is communicated with the circulation pipeline 102A through an A ball valve 16.
Electronic components in the high-voltage frequency converter have the longest service life within the temperature range of 20-50 ℃, so that the electronic components have certain requirements on the temperature of cooling medium water glycol, the temperature of the water glycol is kept within a certain range through the comprehensive control of the electric three-way valve 12, the platinum thermal resistor 1.2 and the heater 10, and therefore the air-water cooling radiator 19 cools hot air flowing out of the frequency converter to the air circulation pipeline to a certain range through the water glycol medium.
The pipeline between the heater 10 and the filter 15 is communicated with a safety pipeline 22, the safety pipeline 22 is sequentially provided with a B ball valve 3, a safety valve 6, an earthquake-resistant pressure gauge 4, an energy storage tank 5, a liquid-filled ball valve 9, an automatic exhaust valve 7 and the B ball valve 3 which are respectively communicated with the safety pipeline 22 along the circulation direction of a cooling medium, and a pressure gauge switch 17 is arranged between the safety valve 6 and the safety pipeline 22.
When the pressure in the outlet pipe 20 reaches a threshold value, the safety valve 6 can be opened, so that the safety pipe 22 is communicated with the outlet pipe 20 to perform the function of pressure relief, and the outlet pipe 20 is prevented from being crushed.
The energy storage tank 5 plays a role in stabilizing the pressure of the system and supplementing liquid, the pressure gauge switch 17 is used when the pressure transmitter 4 is overhauled, and the liquid supplementing valve 9 is used when the liquid is supplemented to the system.
An A ball valve 16 is communicated between the B circulation pipeline 103 and the inlet pipeline 21, a B ball valve 3 is communicated on a pipeline between the plate type heat exchanger 18 and the inlet pipeline 21, and an automatic exhaust valve 7 and the B ball valve 3 are respectively communicated on a pipeline between the air cooler 11 and the outlet pipeline 22.
Example 5:
as shown in fig. 1 and 2, in addition to the above embodiments, in the present embodiment, a plurality of air-water cooled radiators 19 are provided and are connected in series. The plurality of air-water cooling radiators 19 are used for cooling the plurality of frequency converters 107, so that the cooling efficiency of the frequency converters 107 can be improved, sufficient heat exchange between a cooling medium and hot air is facilitated, and the energy utilization rate is improved.
Example 6:
on the basis of the above embodiment, in this embodiment, the outlet pipeline 20 and the inlet pipeline 21 are provided with the platinum thermal resistor 1, the water cooling cabinet 101 is also provided with the platinum thermal resistor 1, and the temperature of the internal environment of the outlet pipeline 20, the inlet pipeline 21 and the water cooling cabinet 101 can be monitored by using the platinum thermal resistor 1, so as to detect whether the temperature abnormality occurs, which is beneficial to improving the safety performance.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a high-voltage inverter air-water cooling system suitable for low temperature environment which characterized in that: the cooling system comprises a water cooling cabinet (101), an air-water cooling radiator (19) communicated with the water cooling cabinet (101) through an A circulating pipeline (102), a B circulating pipeline (103) communicated with the A circulating pipeline (102) to form a closed circuit, and a cooling device arranged on the B circulating pipeline (103), wherein a cooling medium is circulated in the A circulating pipeline (102) in a circulating manner, the cooling medium adopts water glycol, and the cooling device exchanges heat with the cooling medium in the B circulating pipeline (103).
2. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment as claimed in claim 1, wherein: the cooling device comprises a plate heat exchanger (18) and/or a wind cooler (11).
3. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment as claimed in claim 1, wherein: the plate heat exchanger (18) is connected with the air cooler (11) in series through a B circulating pipeline (103).
4. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment according to any one of claims 1 to 3, wherein: the air-water cooling radiator (19) is communicated with an air circulation pipeline which can be circularly communicated with the frequency converter, a medium in the air circulation pipeline exchanges heat with a cooling medium in the circulation pipeline A (102) in the air-water cooling radiator (19), and the air circulation pipeline is provided with an air channel and an axial flow fan communicated between the air channel and the frequency converter.
5. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment according to any one of claims 2 or 3, wherein: the water cooling cabinet is characterized in that an outlet pipeline (20) communicated with an outlet of a circulation pipeline B (103) and an inlet of a circulation pipeline A (102) is arranged in the water cooling cabinet 1, a pressure measuring joint (8) communicated with the outlet pipeline (20), a water pump body (14), a pressure transmitter (2) communicated with the outlet pipeline (20) through a ball valve B (3), the pressure measuring joint (8) communicated with the outlet pipeline (20), a heater (10), a filter (15) and a ball valve A (16) communicated with the inlet of the circulation pipeline A (102) are sequentially arranged on the outlet pipeline (20) along the flowing direction of a cooling medium, and the water pump body (14) is respectively communicated with a water pump motor (13) and an automatic exhaust valve (7).
6. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment as claimed in claim 5, wherein: the water-cooled tank 1 is internally provided with an inlet pipeline (21) for communicating an outlet of the circulation pipeline A (102) with an inlet of the circulation pipeline B (103), the inlet pipeline (21) is sequentially provided with a liquid-filled ball valve (9) and a pressure transmitter (2) which are respectively communicated with the inlet pipeline (21) along the flowing direction of a cooling medium, the outlet end of the inlet pipeline (21), the inlet end of the circulation pipeline B (103) and the inlet end of the outlet pipeline (20) are communicated with a three-way ball valve (12), the outlet end of the inlet pipeline (21) is communicated with the inlet end of the three-way ball valve (12), and the inlet end of the inlet pipeline (21) is communicated with the circulation pipeline A (102) through an A ball valve (.
7. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment as claimed in claim 5, wherein: the pipeline between the heater (10) and the filter (15) is communicated with a safety pipeline (22), the safety pipeline (22) is sequentially provided with a ball valve B (3), a safety valve (6), a shock-resistant pressure gauge (4), an energy storage tank (5), a liquid-filled ball valve (9), an automatic exhaust valve (7) and the ball valve B (3) which are respectively communicated with the safety pipeline (22) along the circulation direction of a cooling medium, and a pressure gauge switch (17) is arranged between the safety valve (6) and the safety pipeline (22).
8. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment as claimed in claim 6 or 7, wherein: a ball valve (16) A is communicated between the circulation pipeline (103) B and the inlet pipeline (21), a ball valve B (3) is communicated on a pipeline between the plate heat exchanger (18) and the inlet pipeline (21), and an automatic exhaust valve (7) and the ball valve B (3) are respectively communicated on a pipeline between the air cooler (11) and the outlet pipeline (22).
9. The air-water cooling system of the high-voltage frequency converter suitable for the low-temperature environment according to any one of claims 1, 2, 3, 6 and 7, wherein: the air-water cooling radiators (19) are arranged in series.
10. The air-water cooling method of the high-voltage frequency converter suitable for the low-temperature environment is characterized by comprising the following steps of: the method comprises the following steps of cooling hot air output by a frequency converter by using water glycol as a cooling medium, and circulating cooled cold air into the frequency converter; the cooling medium heated to a high temperature after the heat exchange is cooled and circulated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910909916.1A CN110753477B (en) | 2019-09-25 | 2019-09-25 | Air-water cooling system and method of high-voltage frequency converter suitable for low-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910909916.1A CN110753477B (en) | 2019-09-25 | 2019-09-25 | Air-water cooling system and method of high-voltage frequency converter suitable for low-temperature environment |
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| CN110753477A true CN110753477A (en) | 2020-02-04 |
| CN110753477B CN110753477B (en) | 2021-07-13 |
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| CN208029283U (en) * | 2018-03-08 | 2018-10-30 | 深圳妈湾电力有限公司 | A kind of high-voltage frequency converter Cooling water system |
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2019
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| US20060151154A1 (en) * | 2003-04-24 | 2006-07-13 | Zoltan Szabo | Combined air cooled condenser |
| JP2014505854A (en) * | 2011-02-22 | 2014-03-06 | コール サステイナブル エナジー ソリューションズ ベー．フェー． | Adsorption compressor operating method and adsorption compressor used therefor |
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