CN114883604A - Fresh air system for fuel cell environmental test chamber - Google Patents
Fresh air system for fuel cell environmental test chamber Download PDFInfo
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- CN114883604A CN114883604A CN202210509047.5A CN202210509047A CN114883604A CN 114883604 A CN114883604 A CN 114883604A CN 202210509047 A CN202210509047 A CN 202210509047A CN 114883604 A CN114883604 A CN 114883604A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/88—Replacing filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04723—Temperature of the coolant
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a fresh air system for a fuel cell environmental test chamber, which comprises an air processing subsystem and a hydrogen safety guarantee system, and also discloses a working method of the fresh air system; aiming at the fresh air requirement of an engine in an environmental test of a fuel cell system, the fresh air sent into an environmental chamber is subjected to three-stage cooling dehumidification treatment, a two-channel switching defrosting method is adopted to solve the problem of frosting of a cooler in a continuous low-temperature test, a fresh air hydrogen safety system is used to solve the safety problem caused by hydrogen backflow, stable and reliable fresh air is guaranteed to be provided, and the safety problem possibly caused by hydrogen in the test is solved.
Description
Technical Field
The invention relates to the field of equipment for testing fuel cells, in particular to a fresh air system for testing fuel cells.
Background
The test of a hydrogen fuel cell power generation system (hereinafter referred to as a system) is limited by the prior art due to factors such as large fresh air demand, and the conventional fresh air system cannot achieve the fresh air processing capacity required by the test of the fuel cell. The prior general fresh air system has the defects: 1. the traditional fresh air system adopts an electric heating design, has higher surface temperature and has larger potential safety hazard when short circuit or abnormality occurs; 2. the traditional fresh air system cannot prevent hydrogen from flowing backwards when hydrogen in the main cabin body leaks, hydrogen in the pipeline is easy to gather due to hydrogen flowing backwards, and potential safety hazards exist when the system is started next time; 3. the traditional fresh air system is easy to frost on the surface of a heat exchanger under the low-temperature working condition (less than 0 ℃), and the heat exchange capability of the heat exchanger is obviously reduced and the temperature cannot be reduced after the heat exchanger is operated for a long time.
Aiming at the defects and the problems, in order to ensure the safety of the fuel cell system test and ensure the continuous and stable supply of fresh air for the test, the research and development of a fresh air system for the fuel cell test has important practical significance.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a fresh air system for a fuel cell test, which is used for providing reliable clean air meeting the temperature and humidity requirements for the fuel cell test under the condition of ensuring safety.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the fresh air system for the fuel cell environmental test chamber comprises a fresh air system and a hydrogen-air safety system; the fresh air system carries out temperature and humidity treatment on the sucked air, and the air is firstly sent into the fuel cell test box or the air suction port through the hydrogen safety system.
Preferably, the system further comprises an air filtering system, a primary cooling system, a dehumidifying system, a secondary cooling system and a tertiary cooling system.
Preferably, the method comprises the steps of connecting a flame arrester to an air direct discharge pipeline, then connecting an electromagnetic valve, then communicating the pipeline to a hydrogen separation tank to separate hydrogen and air, and connecting the hydrogen separation tank to a switch air valve to be led into the environmental test chamber through a pipeline.
Preferably, the bag filter is used for filtering air and is connected to an industrial fan for providing wind power, the pressure difference sensors are arranged at the front end and the rear end of the bag filter, and whether the bag filter is blocked or not is judged according to the pressure difference so as to be cleaned and replaced.
Preferably, the fresh air exchanges heat with cooling water through an evaporator, then exchanges heat with an oil heating heat exchanger, and the temperature is adjusted to be the required temperature; and the temperature sensor is used for detecting the temperature after the primary cooling so as to adjust the opening and closing of the valve and the opening.
Preferably, fresh air enters the dehumidifier through the switch air valve when needing dehumidification, and is connected to enter the secondary cooler after being dehumidified; when fresh air does not need to be cooled, the fresh air directly enters the secondary cooler through the switch air valve.
Preferably, the dehumidified fresh air enters the secondary evaporator to be cooled for the second time, and the temperature of the fresh air is reduced again.
Preferably, the fresh air after the second-stage cooling enters the third-stage cooling part through the electric air valve, the third-stage cooling part is divided into a straight-through path and a bypass path, the fresh air enters the heat exchanger and then enters the hydrogen-air separation tank through the electric air valve, and finally enters the system through the electric air valve.
The technical scheme is adopted, and the system comprises an air treatment system and a hydrogen safety system; the fresh air sent into the environmental chamber is subjected to three-stage cooling dehumidification treatment, a two-channel switching defrosting method is adopted to solve the problem of frosting of a cooler during a continuous low-temperature test, a fresh air hydrogen safety system is used to solve the safety problem caused by hydrogen backflow, stable and reliable fresh air is guaranteed to be provided, and the safety problem possibly caused by hydrogen in the test is solved.
Drawings
Fig. 1 is a structure of an embodiment of a fresh air system for a fuel cell test according to the present invention.
In the figure, 100-air filtration system, 101-bag filter, 102-differential pressure sensor, 103-industrial fan composition, 200-primary cooling, 201-primary evaporator, 202-oil heating heat exchanger, 203-temperature sensor, 204-electric proportional valve, 205-electric proportional valve, 300-dehumidification system, 301-electric switch valve, 302-electric switch valve, 303-rotary dehumidifier, 400-secondary cooling system, 401-secondary evaporator, 500-tertiary cooling system, 501-electric switch valve, 502-differential pressure sensor, 503-tertiary evaporator, 504-differential pressure sensor, 505-electric switch valve, 506-electric switch valve, 507-regulating valve, 508-regulating valve, 509-tertiary evaporator, 103-industrial fan composition, 510-regulating valve, 511-regulating valve, 512-electric switch valve, 600-hydrogen-air safety system, 601-hydrogen separating tank, 602-flame arrester, 603-electromagnetic valve, 604-switch air valve.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the system comprises an air filtering system 100, a primary cooling system 200, a dehumidifying system 300, a secondary cooling system 400 and a tertiary cooling system 500.
According to a specific embodiment of the present application, the air filtration system 100 as shown in FIG. 1 includes a bag filter 101 for filtering air to ensure that the intake air is pure; the industrial fan 103 is used for providing wind power; the differential pressure sensor 102 is arranged at the front end and the rear end 2 of the bag filter, and judges whether the bag filter is blocked or not according to the differential pressure and needs to be cleaned and replaced.
According to a specific embodiment of the present application, as shown in fig. 1, the primary cooling 200 includes a primary evaporator for exchanging heat 201 with cooling water to lower the temperature of the filtered air; the oil heating heat exchanger 202 is used for heating the cooled air and adjusting the air temperature to a pre-dehumidification temperature; the electric proportional valve 204 is used for adjusting the flow of the heating oil entering the heat exchanger and controlling the temperature of the fresh air at the outlet; the temperature sensor 203 is used for detecting the temperature of the air outlet and feeding back the temperature to the system as a temperature adjusting basis.
According to a specific embodiment of the present application, the dehumidification system 300 shown in fig. 1 includes opening the electric air valve 301 when fresh air needs to be dehumidified, opening the electric air valve 301 when fresh air does not need to be dehumidified, and opening the electric air valve 302, wherein the fresh air does not pass through the dehumidifier; the rotary dehumidifier 303 is used to dehumidify air, reduce the humidity of the sucked air, and prevent freezing.
According to a specific embodiment of the present application, the secondary cooling system 400 shown in fig. 1 includes a secondary evaporator 401 for cooling the dehumidified fresh air again.
According to a specific embodiment of the present application, as shown in fig. 1, the three-stage cooling system 500 includes an on-off air valve 501 for opening fresh air, a heat exchanger 503 for passing fresh air, an electric air valve 505 for opening fresh air, and a fresh air temperature detection sensor 605 for feeding back a temperature value, and correspondingly adjusting an electric control valve 507 for controlling the temperature. The heat exchanger 503 runs at low temperature for a long time and frosts, the frosting degree is judged according to the pressure difference sensor 504, after the frosting degree reaches a threshold value, the electric air valve is opened, the adjusting valve 508 is adjusted, the electric air valve is closed, the adjusting valve 511 is closed, and the adjusting valve 510 is kept opened to heat and defrost the heat exchanger of the electric proportional valve 503. And after the pressure difference sensor 502 reaches the threshold value, opening the switch air valve and the regulating valve 507, closing the switch air valve, switching to the heat exchanger 503 for heat exchange, closing the regulating valve 510 to keep the regulating valve 511 open, and heating and defrosting the heat exchanger 509.
According to a specific embodiment of the present application, the hydrogen air safety system 600 as shown in fig. 1 includes a flame arrestor 602 for hydrogen emission safety, placing a flashback; the electromagnetic valve 603 is used for switching on and off a system pipeline; the hydrogen separation tank 601 is used for preventing hydrogen from flowing backwards as hydrogen and air are separated; after the switch air valve 604 is opened, fresh air is directly introduced into the environmental chamber.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Outputting high-temperature fresh air: setting the temperature of fresh air to be more than the ambient temperature to be more than 0 ℃, operating the system, sequentially opening the electromagnetic valve 603, the electric switch air valve 505, the electric switch air valve 501, the electric switch air valve 506, the fan 103, delaying the starting of the fan by 10S, then opening the electric air valve 604, supplying fresh air to the ambient cabin, simultaneously closing the electromagnetic valve 603, simultaneously starting to adjust the electric proportional valve 205 and the electric proportional valve 507 when the fresh air is supplied, starting to gradually heat the sucked ambient temperature, and adjusting the valve according to the temperature detected by the temperature sensor 605 so as to meet the condition that the temperature sensor is the same as the set temperature value.
At the end of the test, when the system is shut down: and (3) opening the electromagnetic valve 603, closing the electric air valve 604, keeping the pressure of a system pipeline and exhausting, continuously operating for 1min, closing all valves and motors, and stopping the system.
Outputting low-temperature fresh air: setting the temperature of fresh air to be less than the ambient temperature and less than 0 ℃, operating the system, sequentially opening an electromagnetic valve 505, an electric switch air valve 501, an electric switch air valve 301 and a dehumidifier path, starting a fan 102 and a dehumidifier 303, starting the fan after delaying the start for 10 seconds, opening an electric air valve 604, supplying fresh air into an environmental chamber, simultaneously closing an electromagnetic valve 603, starting to adjust an electric proportional valve 204 and an electric proportional valve 511 while supplying the fresh air, starting to gradually cool the sucked ambient temperature, frosting the surface of a heat exchanger 503 due to moisture content during the temperature reduction process, reading the value of a pressure difference sensor 504 aiming at the frosting condition, judging whether the heat exchanger starts to frost to cause the heat exchange capacity of the heat exchanger to be reduced or not, increasing the pressure difference value to reach a threshold value, opening the switch air valve, closing an adjusting valve 508, closing the electric air valve, closing the adjusting valve 511, the regulating valve 510 is kept open to heat and defrost the heat exchanger 503. When the system pressure difference sensor 502 reaches a threshold value, the switch air valve and the regulating valve 507 are opened, the switch air valve is closed, the heat exchanger 503 is switched to exchange heat, the regulating valve 510 keeps the regulating valve 511 open, heating and defrosting are carried out on the heat exchanger 509, defrosting and cooling are carried out on different heat exchangers and air channels simultaneously in the cooling process, and the heat exchanger is guaranteed to be in a high-efficiency heat exchange state.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. The utility model provides a new trend system for fuel cell environmental test case which characterized in that: the system comprises a fresh air system and a hydrogen-air safety system; the fresh air system carries out temperature and humidity treatment on the sucked air, and the air is firstly sent into the fuel cell test box or the air suction port through the hydrogen safety system.
2. The fresh air system for the fuel cell environmental test chamber according to claim 1, characterized in that: the system also comprises an air filtering system, a primary cooling and dehumidifying system, a secondary cooling system and a tertiary cooling system.
3. The fresh air system for the fuel cell environmental test chamber according to claim 1, characterized in that: the method comprises the steps of connecting a flame arrester with an air direct-discharge pipeline, then connecting an electromagnetic valve, then communicating the pipeline to a hydrogen separation tank to separate hydrogen and air, and connecting the hydrogen separation tank to a switch air valve to be led into an environment test cabin through a pipeline.
4. The fresh air system for the fuel cell environmental test chamber according to claim 1, characterized in that: the bag filter is used for filtering air and is connected to an industrial fan to provide wind power, the pressure difference sensors are arranged at the front end and the rear end of the bag filter, and whether the bag filter is blocked or not is judged according to the pressure difference so that the bag filter needs to be cleaned and replaced.
5. The fresh air system for the fuel cell environmental test chamber according to claim 1, characterized in that: the fresh air exchanges heat with cooling water through an evaporator, then exchanges heat with an oil heating heat exchanger, and the temperature is adjusted to be the required temperature; and the temperature sensor is used for detecting the temperature after the primary cooling so as to adjust the opening and closing of the valve and the opening.
6. The fresh air system for the fuel cell environmental test chamber according to claim 2, characterized in that: fresh air enters the dehumidifier through the switch air valve when needing dehumidification, and is connected to enter the secondary cooler after being dehumidified; when fresh air does not need to be cooled, the fresh air directly enters the secondary cooler through the switch air valve.
7. The fresh air system for the fuel cell environmental test chamber according to claim 2, characterized in that: and the dehumidified fresh air enters a secondary evaporator to be cooled for the second time, and the temperature of the fresh air is reduced again.
8. The fresh air system for the fuel cell environmental test chamber according to claim 2, characterized in that: fresh air after the second-stage cooling enters the third-stage cooling part through the electric air valve, the third-stage cooling part is divided into a straight way and a bypass way, the fresh air enters the heat exchanger and then enters the hydrogen-air separation tank through the electric air valve, and finally enters the system through the electric air valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509047.5A CN114883604A (en) | 2022-05-11 | 2022-05-11 | Fresh air system for fuel cell environmental test chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509047.5A CN114883604A (en) | 2022-05-11 | 2022-05-11 | Fresh air system for fuel cell environmental test chamber |
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| Publication Number | Publication Date |
|---|---|
| CN114883604A true CN114883604A (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210509047.5A Pending CN114883604A (en) | 2022-05-11 | 2022-05-11 | Fresh air system for fuel cell environmental test chamber |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650877A (en) * | 1992-07-06 | 1994-02-25 | Orion Mach Co Ltd | Environmental test apparatus |
| KR100614280B1 (en) * | 2005-03-29 | 2006-08-22 | (주)에이티이엔지 | A cooling dehumidification system for low dew point case and cooling dehumidification method |
| JP2009123594A (en) * | 2007-11-16 | 2009-06-04 | Espec Corp | Fuel cell evaluation testing device |
| JP2016090482A (en) * | 2014-11-07 | 2016-05-23 | エスペック株式会社 | Environmental testing method and environmental testing apparatus |
| CN108899565A (en) * | 2018-06-13 | 2018-11-27 | 金华市畔星科技有限公司 | A kind of detection method and device of hydrogen fuel cell pile content broken leakage |
| CN208655802U (en) * | 2018-06-13 | 2019-03-26 | 金华市畔星科技有限公司 | A kind of detection device of hydrogen fuel cell pile content broken leakage |
| CN113960093A (en) * | 2021-09-18 | 2022-01-21 | 江苏凌氢新能源科技有限公司 | Switching defrosting low-temperature gas supply system for fuel cell environmental chamber and control method |
| CN114199498A (en) * | 2021-10-25 | 2022-03-18 | 上海凌逐新能源科技有限公司 | Wind tunnel type hydrogen separator for fuel cell environmental chamber |
-
2022
- 2022-05-11 CN CN202210509047.5A patent/CN114883604A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650877A (en) * | 1992-07-06 | 1994-02-25 | Orion Mach Co Ltd | Environmental test apparatus |
| KR100614280B1 (en) * | 2005-03-29 | 2006-08-22 | (주)에이티이엔지 | A cooling dehumidification system for low dew point case and cooling dehumidification method |
| JP2009123594A (en) * | 2007-11-16 | 2009-06-04 | Espec Corp | Fuel cell evaluation testing device |
| JP2016090482A (en) * | 2014-11-07 | 2016-05-23 | エスペック株式会社 | Environmental testing method and environmental testing apparatus |
| CN108899565A (en) * | 2018-06-13 | 2018-11-27 | 金华市畔星科技有限公司 | A kind of detection method and device of hydrogen fuel cell pile content broken leakage |
| CN208655802U (en) * | 2018-06-13 | 2019-03-26 | 金华市畔星科技有限公司 | A kind of detection device of hydrogen fuel cell pile content broken leakage |
| CN113960093A (en) * | 2021-09-18 | 2022-01-21 | 江苏凌氢新能源科技有限公司 | Switching defrosting low-temperature gas supply system for fuel cell environmental chamber and control method |
| CN114199498A (en) * | 2021-10-25 | 2022-03-18 | 上海凌逐新能源科技有限公司 | Wind tunnel type hydrogen separator for fuel cell environmental chamber |
Non-Patent Citations (3)
| Title |
|---|
| 冉广鹏;傅允准;: "转轮除湿与冷却除湿结合的新风除湿系统性能试验研究", 流体机械, no. 01 * |
| 苏文, 臧润清, 赵辉: "结霜工况下一种新型低温低湿系统的实验研究", 暖通空调, no. 04 * |
| 马建军;刘海燕;: "间接制冷换热器除霜方案研究", 装备环境工程, no. 07 * |
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