CN116314924B - Waste heat recycling method for fuel cell - Google Patents
Waste heat recycling method for fuel cell Download PDFInfo
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- CN116314924B CN116314924B CN202310084046.5A CN202310084046A CN116314924B CN 116314924 B CN116314924 B CN 116314924B CN 202310084046 A CN202310084046 A CN 202310084046A CN 116314924 B CN116314924 B CN 116314924B
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- 239000000446 fuel Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002918 waste heat Substances 0.000 title claims abstract description 27
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000010992 reflux Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/02—Other direct-contact heat-exchange apparatus the heat-exchange media both being gases or vapours
-
- 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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04358—Temperature; Ambient temperature of the coolant
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The application relates to a waste heat recycling method for a fuel cell, which comprises the following steps: acquiring cold air based on an air inlet and acquiring temperature T of the cold air of the air inlet m1 Mass flow q of cold air at the inlet m1 Temperature T of reflux warm air of reflux pipeline near air inlet end of fuel cell m2 Mass flow q of return warm air m2 The method comprises the steps of carrying out a first treatment on the surface of the Mixing cold air at the air inlet and return warm air near the air inlet end of the fuel cell to form a mixed fluid, and based on the mass flow q m1 And mass flow q m2 Obtaining the mass flow rate q of the mixed fluid m The method comprises the steps of carrying out a first treatment on the surface of the The mixed fluid enters the fuel cell to exchange heat with the fuel cell to form warm air, and flows back into the return pipeline. The application solves the problems that the low-quality heat of the existing fuel cell is difficult to utilize and high-quality heat energy is difficult to form.
Description
Technical Field
The application relates to the technical field of fuel cells, in particular to a waste heat recycling method for a fuel cell.
Background
A fuel cell is a power generation facility that generates electric energy and heat through a series of electrochemical reactions using hydrogen and oxygen as reaction raw materials. The fuel cell waste heat utilization device is mostly arranged on the water-cooled fuel cell stack, and the waste heat quality is higher, so that the utilization is simpler and more convenient.
Based on the heat property of the air cooling medium, the air-cooled fuel cell mainly focuses on the heat dissipation efficiency of the fuel cell, but the importance of an air-cooled heat recovery system is relatively ignored, so that the heat utilization rate of the air-cooled fuel cell is lower than that of the water-cooled fuel cell, and the stable output of warm air with a certain temperature based on the waste heat of the air-cooled fuel cell is difficult, and particularly in a low-temperature environment, the low-quality waste heat recovery control of the fuel cell is important.
In view of this, the present application provides a waste heat recovery and utilization method for a fuel cell.
Disclosure of Invention
In view of the above, the embodiment of the application provides a method for recycling waste heat of a fuel cell, so as to solve the problems that the low-quality heat of the existing fuel cell is difficult to utilize and the high-quality heat is difficult to form.
The embodiment of the application provides the following technical scheme:
the embodiment of the application provides a waste heat recycling method for a fuel cell, wherein the fuel cell is communicated with a backflow pipeline, the backflow pipeline is provided with an air inlet for inputting cold air and an air outlet for outputting part of warm air in the backflow pipeline, and the waste heat recycling method for the fuel cell comprises the following steps:
acquiring cold air based on the air inlet and acquiring the temperature T of the cold air of the air inlet m1 Mass flow q of cold air of said air inlet m1 The temperature T of the reflux warm air of the reflux pipeline close to the air inlet end of the fuel cell m2 The mass flow q of the reflux warm air m2 ；
Mixing cold air of the air inlet and return warm air near the air inlet end of the fuel cell to form mixed fluid, and based on the mass flow q m1 And the mass flow q m2 Obtaining the mass flow rate q of the mixed fluid m ；
The mixed fluid enters the fuel cell to exchange heat with the fuel cell to form warm air, and flows back into the backflow pipeline, and the warm air temperature T 'of the warm air' m2 The temperature values of (2) are as follows:
wherein Q is heat and C generated by the fuel cell when the mixed fluid exchanges heat with the fuel cell p Is the specific heat capacity.
Further, the reflux warm air is warm air which does not flow out of the air outlet in the reflux pipeline.
Further, the entering of the mixed fluid into the fuel cell to exchange heat with the fuel cell to form warm air comprises:
the mixed fluid exchanges heat with the fuel cell for a plurality of times under the action of the backflow pipeline to form warm air until the warm air temperature T 'of the warm air' m2 Reaching steady state, the warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 。
Further, the warm air temperature T' m2 The calculation formula of (2) is as follows:
further, at a warm air temperature T 'of the warm air' m2 Reaching steady state, the warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 Thereafter, the method further comprises:
based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 。
Further, based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
regulating the heat Q generated by the fuel cell and maintaining the mass flow Q m1 Unchanged to adjust the warm air temperature T' m2 。
Further, based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
maintaining the heat Q generated by the fuel cell unchanged, and adjusting the mass flow Q m1 To adjust the warm air temperature T' m2 。
Further, based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
simultaneously regulating the heat Q generated by the fuel cell and the mass flow Q m1 To adjust the warm air temperature T' m2 。
Compared with the prior art, the waste heat recycling method for the fuel cell provided by the application has the advantages that the warm air in the backflow pipeline is refluxed to continuously heat the warm air in the backflow pipeline, so that the warm air with a certain temperature can be formed, and the problems that the low-quality heat of the existing fuel cell is difficult to utilize and the high-quality heat energy is difficult to form are solved;
furthermore, the application can regulate the temperature of the gas in the return pipeline by regulating the heat generation amount of the fuel cell and the mass flow of the cold air entering the return pipeline through the air inlet, thereby being further convenient for regulating the temperature of the warm air output by the air outlet.
Drawings
FIG. 1 is a flow chart (I) of a method for recovering and utilizing waste heat for a fuel cell according to the present application;
FIG. 2 is a flow chart (II) of a method for recovering and utilizing waste heat for a fuel cell according to the present application;
FIG. 3 is a low temperature waste heat recirculation process of the fuel cell of the present application;
fig. 4 shows the thermodynamic equivalent process of the low temperature waste heat reflux of the fuel cell of the present application.
Detailed Description
The present application will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present application without making any inventive effort, are intended to fall within the scope of the present application.
It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is possible for those of ordinary skill in the art to apply the present application to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the application can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "a," "an," "the," and similar referents in the context of the application are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in connection with the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
A waste heat recycling method for a fuel cell is characterized in that the fuel cell is communicated with a return pipeline, and the return pipeline is provided with an air inlet for inputting cold air and an air outlet for outputting part of warm air in the return pipeline.
The air inlet is used for conveying cold air into the backflow pipeline, and the air outlet is used for outputting a warm air part in the backflow pipeline to guide the warm air part to a heat-using place.
The reflux pipeline is used for circularly refluxing the internal reflux warm air so as to enable the internal reflux warm air to exchange heat with the fuel cell core of the fuel cell for a plurality of times.
Fig. 1 is a flowchart (i) of a method for recovering and utilizing waste heat for a fuel cell according to the present application, as shown in fig. 1, the method for recovering and utilizing waste heat for a fuel cell includes:
step S102, acquiring cold air based on the air inlet, and acquiring the temperature T of the cold air of the air inlet m1 Mass flow q of cold air at the inlet m1 Temperature T of reflux warm air of reflux pipeline near air inlet end of fuel cell m2 Mass flow q of return warm air m2 ；
Step S104, mixing cold air of the air inlet and return warm air near the air inlet end of the fuel cell to form mixed fluid, and based on the mass flow q m1 And mass flow q m2 Obtaining the mass flow rate q of the mixed fluid m ；
Step S106, the mixed fluid enters the fuel cell to exchange heat with the fuel cell to formWarm air flows back into the return pipeline, and the warm air temperature T 'of the warm air' m2 The temperature values of (2) are as follows:
wherein Q is heat and C generated by the fuel cell when the mixed fluid exchanges heat with the fuel cell p Is the specific heat capacity.
In step S102, cool air can enter the return duct through the air inlet.
Wherein, can adjust the flow that cold wind got into in the return line through the air inlet.
Wherein a temperature sensor can be arranged in the air inlet to obtain the temperature T of cold air in the air inlet m1 。
Wherein a mass flow detector may be provided in the inlet to detect the mass flow Q of the gas entering from the inlet m1 。
Wherein, a temperature sensor is arranged in the return pipeline, and the temperature sensor in the return pipeline is arranged at one end close to the fuel cell and is used for detecting the temperature T of return warm air in the return pipeline m2 。
Wherein, a mass flow detector is arranged in the return pipeline to detect the mass flow q in the return pipeline m2 。
Wherein, the reflux warm air is warm air which does not flow out from the air outlet in the reflux pipeline.
In step S104, after the cool air enters the return duct from the air inlet, the cool air flows in the direction in which the fuel cell is located, so as to be mixed with the return warm air at the air inlet end of the fuel cell to form a mixed fluid, and then the mixed fluid flows to the fuel cell to exchange heat with the fuel cell core of the fuel cell.
Wherein q m Can be determined from the mass flow q m1 And mass flow q m2 And adding to obtain the final product.
In step S106, after the mixed fluid flows into the fuel cell, the fuel cell core always emits heat outwards, so that the mixed fluid can exchange heat with the fuel cell core to form warm air, and the mixed fluid with a certain temperature can also maintain the temperature of the fuel cell core, so that the fuel cell core is prevented from being frozen or the power generation efficiency is reduced due to the influence of cold air at the air inlet.
After the warm air flows back into the return pipeline, one part of the warm air flows out from the air outlet, and the other part of the warm air continues to circulate in the return pipeline.
Wherein, based on T' m2 The temperature acquisition formula of (2) can be used for adjusting the temperature of warm air by adjusting the heat generated by the fuel cell, and further, the warm air is continuously circulated in the return pipeline, so that high-quality heat can be formed to supply heat to a heat utilization place.
Fig. 2 is a flow chart (two) of a waste heat recycling method for a fuel cell according to the present application, as shown in fig. 2, the mixed fluid entering the fuel cell to exchange heat with the fuel cell to form warm air includes:
step S202, the mixed fluid exchanges heat with the fuel cell for a plurality of times under the action of the return pipeline to form warm air until the warm air temperature T 'of the warm air is reached' m2 Reaching steady state, warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 。
Wherein at the warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 In the case of (2), the foregoing calculation T' m2 The formula of (2) can be simplified to
Wherein in the above formula, due to T m1 Is the temperature of the external cold air.
Wherein C is p The specific heat capacity of the mixed fluid is also a certain value.
Wherein q m1 The mass flow of the cold air entering the air inlet can be adjusted by adjusting the opening of the air inlet.
As can be seen from the above, at the warm air temperature T 'of the warm air' m2 Can be made of fuelEnergy Q released by the battery and mass flow Q into the inlet m1 Adjusting to realize T' m2 Is controlled accurately.
At the warm air temperature T 'of the mixed fluid' m2 After steady state is reached, the fuel cell can generate heat Q and mass flow Q m1 Regulating warm air temperature T' m2 。
In some of these embodiments, only the heat generated by the fuel cell, Q, may be regulated, maintaining the mass flow rate, Q m1 Unchanged to adjust the warm air temperature T' m2 。
Specifically, the power generation of the fuel cell may be increased or decreased to adjust the amount of heat Q generated by the fuel cell.
In some of these embodiments, the mass flow Q may be adjusted by maintaining the heat Q generated by the fuel cell constant m1 To adjust the temperature T 'of the warm air' m2 。
Specifically, a valve can be arranged on the air inlet to control the opening and closing degree of the air inlet, so that the mass flow q can be adjusted by adjusting the opening degree of the valve m1 To adjust the temperature T 'of the warm air' m2 。
In some of these embodiments, the heat generated by the fuel cell Q and the mass flow Q may be adjusted simultaneously m1 To adjust the temperature T 'of the warm air' m2 。
A specific demonstration of the application is as follows to illustrate the warm air temperature T 'of the application' m2 。
As shown in FIG. 3, cold air (thermal parameter: C) entering the return line from the inlet port p 、q m1 、T m1 ) And the return warm air (thermal parameters: c (C) p 、q m2 、T m2 ) After mixing, a mixed fluid (thermal parameters: c (C) p 、q m1 、T’ m1 ) The mixed fluid is heated by the heat generated by the fuel cell Q to obtain warm air (thermal parameters: c (C) p 、q m 、T’ m2 ) So after one reflux cycle, the warm air temperature T 'of the warm air' m2 The method comprises the following steps:
FIG. 4 is a thermodynamic equivalent cycle equivalent to FIG. 3 in which cold air (thermal parameters: C) enters from the inlet p 、q m1 、T m1 ) After heating by the heat generation Q of the fuel cell, a mixed fluid (thermal parameters: c (C) p 、q m1 、T’ m1 ) The mixed fluid was mixed with return warm air (thermal parameters: c (C) p 、q m2 、T m2 ) After mixing, warm air (hot object parameters: c (C) p 、q m 、T” m2 ) Then after one reflux circulation, the warm air temperature T' of the warm air " m2 The following relation is satisfied:
in the process shown in FIG. 4, after several iterations of returning warm air, T' m2 And T is m2 Equal, i.e. T' m2 And T is m2 Equal, thus T' m2 Satisfies the following relationship:
based on the formula, the specific heat capacity C of fuel cell fuel dancing property is given to the heat production quantity Q of the fuel cell p Cold air inlet mass flow q of fuel cell m1 Under the condition of (1) that the warm air temperature T 'is given' m2 That is, after the warm air reaches steady state, the warm air temperature T' m2 By regulating the heat production Q and the mass flow Q of the fuel cell m1 Realizing accurate control.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (5)
1. The waste heat recycling method for the fuel cell is characterized in that the fuel cell is communicated with a backflow pipeline, an air inlet for inputting cold air and an air outlet for outputting part of warm air in the backflow pipeline are arranged on the backflow pipeline, and warm air which does not flow out of the air outlet flows back into the backflow pipeline, wherein the warm air which does not flow out of the air outlet in the backflow pipeline is backflow warm air, and the waste heat recycling method for the fuel cell comprises the following steps:
acquiring cold air based on the air inlet and acquiring the temperature T of the cold air of the air inlet m1 Mass flow q of cold air of said air inlet m1 The temperature T of the reflux warm air of the reflux pipeline close to the air inlet end of the fuel cell m2 The mass flow q of the reflux warm air m2 ；
Mixing cold air of the air inlet and return warm air near the air inlet end of the fuel cell to form mixed fluid, and based on the mass flow q m1 And the mass flow q m2 Obtaining the mass flow rate q of the mixed fluid m ；
The mixed fluid exchanges heat with the fuel cell under the action of the backflow pipeline to form warm air, and the warm air temperature T 'of the warm air' m2 The temperature values of (2) are as follows:
wherein Q is heat and C generated by the fuel cell when the mixed fluid exchanges heat with the fuel cell p Is specific heat capacity;
the warm air flows back and exchanges heat for a plurality of times until the warm air temperature T 'of the warm air is reached' m2 Reach steady state and the warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 At this time, the warm air temperature T' m2 The calculation formula of (2) is as follows:
wherein the warm air temperature T' m2 Can exchange heat with the fuel cell based on the mixed fluid, the heat generated by the fuel cell and the mass flow q of cold air entering the air inlet m1 And adjusting.
2. The method for recovering and utilizing waste heat for a fuel cell according to claim 1, wherein at a warm air temperature T 'of the warm air' m2 Reaching steady state, the warm air temperature T' m2 Is equal to the temperature T of the reflux warm air m2 Thereafter, the method further comprises:
based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 。
3. The waste heat recovery and utilization method for a fuel cell according to claim 2, wherein the heat Q generated by the fuel cell and the mass flow rate Q are based on m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
regulating the heat Q generated by the fuel cell and maintaining the mass flow Q m1 Unchanged to adjust the warm air temperature T' m2 。
4. The method for recovering and utilizing waste heat for a fuel cell according to claim 2, wherein,based on the heat generated by the fuel cell Q and the mass flow Q m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
maintaining the heat Q generated by the fuel cell unchanged, and adjusting the mass flow Q m1 To adjust the warm air temperature T' m2 。
5. The waste heat recovery and utilization method for a fuel cell according to claim 2, wherein the heat Q generated by the fuel cell and the mass flow rate Q are based on m1 Regulating the temperature T 'of the warm air' m2 Comprising the following steps:
simultaneously regulating the heat Q generated by the fuel cell and the mass flow Q m1 To adjust the warm air temperature T' m2 。
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| CN102610838A (en) * | 2012-03-22 | 2012-07-25 | 中国东方电气集团有限公司 | Thermal management system of fuel cell, fuel cell system, and vehicle with the fuel cell system |
| CN214278764U (en) * | 2021-03-29 | 2021-09-24 | 佛山市攀业氢能源科技有限公司 | Heat preservation return air controlling means |
| CN215527770U (en) * | 2021-06-04 | 2022-01-14 | 广东喜玛拉雅氢能科技有限公司 | Air-cooled air recycling fuel cell system |
| CN114171754A (en) * | 2021-12-15 | 2022-03-11 | 张家口市氢能科技有限公司 | Hydrogen fuel cell low-temperature operation supporting device |
| CN115224319A (en) * | 2022-07-26 | 2022-10-21 | 北京航天石化技术装备工程有限公司 | Air-cooled fuel cell shelter and opening method thereof |
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