CN113497248A - Heat exchange device applied to hydrogen fuel cell - Google Patents
Heat exchange device applied to hydrogen fuel cell Download PDFInfo
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- CN113497248A CN113497248A CN202110736626.9A CN202110736626A CN113497248A CN 113497248 A CN113497248 A CN 113497248A CN 202110736626 A CN202110736626 A CN 202110736626A CN 113497248 A CN113497248 A CN 113497248A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000001257 hydrogen Substances 0.000 title claims abstract description 46
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 46
- 239000000446 fuel Substances 0.000 title claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000003750 conditioning effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 15
- 239000012530 fluid Substances 0.000 description 11
- 229910000528 Na alloy Inorganic materials 0.000 description 6
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical compound [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
- H01M8/04007—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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The embodiment of the invention discloses a heat exchange device applied to a hydrogen fuel cell. The heat exchange device applied to a hydrogen fuel cell of the present invention includes: the heat exchange device comprises a heat exchange tank, a fixed cover, a first heat exchange tube, a second heat exchange tube and a heat exchange medium; the fixed cover is arranged at the port of the heat exchange tank, and a first heat exchange hole, a second heat exchange hole, a third heat exchange hole and a fourth heat exchange hole are formed in the fixed cover; the first heat exchange tube is arranged in the heat exchange tank, an inlet of the first heat exchange tube is arranged in the first heat exchange hole, and an outlet of the first heat exchange tube is arranged in the second heat exchange hole; the second heat exchange tube is arranged in the heat exchange tank, and an inlet of the second heat exchange tube is arranged in the third heat exchange hole. The heat exchange device applied to the hydrogen fuel cell realizes miniaturization and high efficiency, and can realize adjustment of heat exchange efficiency in a large range.
Description
Technical Field
The embodiment of the invention relates to the technical field of energy sources, in particular to a heat exchange device applied to a hydrogen fuel cell.
Background
The hydrogen fuel cell generates electric energy using an electrochemical reaction of hydrogen gas and air, thereby outputting the electric energy. Therefore, hydrogen gas needs to be continuously supplied during the operation of the hydrogen fuel cell. The hydrogen gas required for the hydrogen fuel cell is generally not directly generated by other devices, but is stored in a pressure vessel such as a hydrogen storage tank, and the stored hydrogen gas is generally in a liquid state. Hydrogen fuel cells do not directly use liquid hydrogen gas, and require the liquid hydrogen gas to be vaporized to produce gaseous hydrogen gas.
The temperature of the vaporized hydrogen gas is lowered by the expansion temperature, and the hydrogen gas needs to be heated to a certain temperature in order to increase the electrochemical reaction rate of the hydrogen fuel cell. Meanwhile, after the hydrogen gas reacts in the hydrogen fuel cell, the hydrogen gas cannot completely react, and a part of the hydrogen gas is discharged out of the hydrogen fuel cell along with the tail gas. In order to utilize the part of the waste hydrogen, the part of the hydrogen needs to be heated to a preset temperature so as to enter the hydrogen fuel cell together with fresh hydrogen for participating in reaction. However, most of the heating devices used in the conventional hydrogen fuel cells are plate heat exchangers, which have a large volume and are difficult to be applied to a scene with a narrow space such as a ship, and the adjustment of the heat exchange efficiency is difficult to be realized.
Disclosure of Invention
The embodiment of the invention provides a heat exchange device applied to a hydrogen fuel cell, aiming at the problems, realizing miniaturization and high efficiency and realizing adjustment of heat exchange efficiency in a large range.
The embodiment of the invention provides a heat exchange device applied to a hydrogen fuel cell, which comprises: the heat exchange device comprises a heat exchange tank, a fixed cover, a first heat exchange tube, a second heat exchange tube and a heat exchange medium;
the fixed cover is arranged at the port of the heat exchange tank, and a first heat exchange hole, a second heat exchange hole, a third heat exchange hole and a fourth heat exchange hole are formed in the fixed cover;
the first heat exchange tube is arranged in the heat exchange tank, an inlet of the first heat exchange tube is arranged in the first heat exchange hole, and an outlet of the first heat exchange tube is arranged in the second heat exchange hole;
the second heat exchange tube is arranged in the heat exchange tank, an inlet of the second heat exchange tube is arranged in the third heat exchange hole, and an outlet of the second heat exchange tube is arranged in the fourth heat exchange hole;
the heat exchange medium is arranged in the heat exchange tank and used for heat exchange between the first heat exchange tube and the second heat exchange tube.
By adopting the technical scheme, compared with a plate type heat exchanger, the heat exchange device applied to the hydrogen fuel cell has the obvious advantages of small volume and adjustable heat exchange efficiency, particularly the middle heat exchange medium can be replaced, so that the adjustment potential of the heat exchange efficiency is greatly improved.
In one possible solution, the portion of the first heat exchange tube inside the heat exchange tank is spiral.
By adopting the technical scheme, the effective length of the first heat exchange tube can be as long as possible, and meanwhile, under the condition of heat conduction between the heat exchange tank and the environment, part of heat or cold can be conducted out of the heat exchange tank, so that the heat efficiency is further improved.
In one possible solution, the part of the second heat exchange pipe inside the heat exchange tank is spiral.
By adopting the technical scheme, the heat exchange length and the effective heat exchange area of the second heat exchange tube are improved, so that the heat efficiency which can be conducted between the first heat exchange tube and the second heat exchange tube is higher.
In one possible solution, the first heat exchange tube and the second heat exchange tube are arranged in parallel with each other.
By adopting the technical scheme, in order to ensure that the distance between the second heat exchange tube and the first heat exchange tube is uniform, the transmission of the heat transfer efficiency between the first heat exchange tube and the second heat exchange tube is relatively uniform, so that the state of the fluid in the first heat exchange tube is relatively consistent, and the boiling state of one section of liquid and one section of gas in the first heat exchange tube can not appear, thereby avoiding influencing the heat transfer efficiency between the first heat exchange tube and the second heat exchange tube.
In one possible embodiment, the method further comprises: adjusting the pump;
and the inlet of the regulating pump is communicated with the interior of the heat exchange tank.
By adopting the technical scheme, when the flow velocity of the fluid in the first heat exchange tube and the second heat exchange tube is unchanged or the flow velocity is still difficult to meet the heat exchange regulation efficiency after the change, the heat exchange efficiency between the first heat exchange tube and the second heat exchange tube is regulated by regulating the quantity of the heat exchange medium, and the effects of supplementing regulation and improving the regulation capacity and sensitivity are achieved.
In one possible embodiment, the method further comprises: a buffer tank;
and the inlet of the buffer tank is communicated with the outlet of the regulating pump.
By adopting the technical scheme, when the heat exchange medium in the heat exchange pipe needs to be adjusted, the heat exchange medium is conveyed into the buffer tank through the regulating pump, so that the heat exchange medium is prevented from being discharged into the air, and the production and air pollution are prevented from being influenced or potential safety hazards are prevented from being caused.
In one possible embodiment, the control pump is a bidirectional pump.
By adopting the technical scheme, the double adjustment for realizing the reduction and the increase of the heat exchange medium is realized.
In one possible embodiment, the method further comprises: a pressure relief valve;
the pressure release valve is arranged on the fixed cover and communicated with the inner part of the heat exchange tank.
By adopting the technical scheme, in order to increase safety measures for the heat exchange tank, when some heat exchange media are not discharged through the regulating pump, the heat exchange media are discharged through the pressure release valve in time, and potential safety hazards such as explosion are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view showing the overall configuration of a heat exchange device applied to a hydrogen fuel cell in an embodiment of the present invention;
fig. 2 is an internal structural view of a heat exchange device applied to a hydrogen fuel cell in an embodiment of the invention;
fig. 3 is an assembly structural view of a first heat exchange pipe of the heat exchange device for a hydrogen fuel cell according to the embodiment of the present invention;
fig. 4 is an assembly structural view of a second heat exchange pipe applied to a heat exchange device for a hydrogen fuel cell in an embodiment of the present invention.
Reference numbers in the figures:
1. a heat exchange tank; 101. a first heat exchanging hole; 102. a second heat exchanging hole; 103. a third heat transfer aperture; 104. a fourth heat transfer aperture; 2. a fixed cover; 3. a first heat exchange tube; 4. a second heat exchange tube; 5. adjusting the pump; 6. a buffer tank; 7. and (4) releasing the valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
The applicant finds that most of the heat exchange devices currently applied to the hydrogen fuel cell are common heat exchange devices such as a plate heat exchanger. The heat exchange devices have the characteristics of large volume and fixed heat exchange efficiency, on one hand, the heat exchange devices cannot be applied to places with narrow space such as ships or the like or are difficult to apply to places with narrow space, on the other hand, the heat exchange process can be adjusted only by adjusting the flow rate or the temperature difference of fluid exchanging heat due to the fixed heat exchange efficiency, and the adjustment efficiency of the heat exchange mode is very low.
Based on this, the applicant tried to design a new heat exchange device by adopting new design idea.
Fig. 1 is a schematic view showing an overall structure of a heat exchanging apparatus for a hydrogen fuel cell according to an embodiment of the present invention, fig. 2 is a structural view showing an internal structure of the heat exchanging apparatus for a hydrogen fuel cell according to an embodiment of the present invention, fig. 3 is a structural view showing an assembly of a first heat exchanging pipe of the heat exchanging apparatus for a hydrogen fuel cell according to an embodiment of the present invention, and fig. 4 is a structural view showing an assembly of a second heat exchanging pipe of the heat exchanging apparatus for a hydrogen fuel cell according to an embodiment of the present invention.
The embodiment of the invention provides a heat exchange device applied to a hydrogen fuel cell, which comprises: the heat exchange device comprises a heat exchange tank 1, a fixed cover 2, a first heat exchange tube 3, a second heat exchange tube 4 and a heat exchange medium.
The heat exchange tank 1 is a container providing a heat exchange space, and the container may be insulated from the surrounding environment or may exchange heat with the surrounding environment. The shape of the heat exchange tank 1 is not particularly limited, and one possible shape of the heat exchange tank 1 is shown in fig. 1.
The fixed cover 2 is arranged at the port of the heat exchange tank 1, and the fixed cover 2 is provided with a first heat exchange hole 101, a second heat exchange hole 102, a third heat exchange hole 103 and a fourth heat exchange hole 104.
The fixing cover 2 is a component which is fixed at the port of the heat exchange tank 1 and plays a role in sealing and connecting. A possible fixed cover 2 is provided with internal threads, an external thread is arranged at the port of a heat exchange tank 1, and the fixed cover 2 is screwed on a heat exchange tube through the internal threads and the external thread.
The material of the fixing cover 2 may be a metal material or may be made of a heat insulating material such as a phenol resin material.
The first heat exchange tube 3 is arranged in the heat exchange tank 1, an inlet of the first heat exchange tube 3 is arranged in the first heat exchange hole 101, and an outlet of the first heat exchange tube 3 is arranged in the second heat exchange hole 102.
It should be noted that the first heat exchanging pipe 3 is made of a heat conducting material, a possible heat conducting material is a metal material such as copper.
The first heat exchange tube 3 is for transporting a gas, liquid or gas-liquid mixture to be heat exchanged. Such as hydrogen gas, mixtures of impurity gases such as hydrogen and nitrogen, mixtures of hydrogen and water vapor, or even mixtures of hydrogen and liquid water.
One possible way to seal the first heat exchange tube 3 with the first heat exchange hole 101 and the second heat exchange hole 102 is as follows: the sealing is performed by a glass sealing material. Seal through glass sealing material, can reduce the volume of revealing of the fluid in the first heat transfer jar 1 on the one hand, on the other hand can play fine sealed effect, and in case reveal, very easily perceive to reduce the detection cost when maintaining.
The second heat exchange tube 4 is arranged in the heat exchange tank 1, an inlet of the second heat exchange tube 4 is arranged in the third heat exchange hole 103, and an outlet of the second heat exchange tube 4 is arranged in the fourth heat exchange hole 104.
It should be noted that the second heat exchanging pipe 4 is made of a heat conducting material.
Flowing inside the second heat exchange tube 4 is a fluid for removing heat, such as air, water, etc.
The sealing and connecting manner between the second heat exchange tube 4 and the third heat exchange hole 103 and the fourth heat exchange hole 104 can refer to the sealing and connecting manner between the first heat exchange tube 3 and the first heat exchange hole 101 and the second heat exchange hole 102.
It should be noted that, a possible fluid in the second heat exchange tube 4 is a liquid lithium sodium alloy, and in this case, the material of the second heat exchange tube 4 should not react with the liquid lithium sodium alloy. The liquid lithium-sodium alloy has the advantage of high heat exchange efficiency.
The heat exchange medium for heat exchange between the first heat exchange tube 3 and the second heat exchange tube 4 is disposed in the heat exchange tank 1.
The heat exchange medium has the function of mediating between the first heat exchange tube 3 and the second heat exchange tube 4, so that heat between the first heat exchange tube and the second heat exchange tube can be transferred, and heat diffusion is realized.
One possible heat exchange medium is air. The reason for using air as heat exchange medium is that air is available everywhere and no secondary pollution is generated.
One possible heat exchange medium is a liquid lithium sodium alloy. The liquid lithium-sodium alloy is adopted mainly because the liquid lithium-sodium alloy has high heat exchange efficiency and small volume expansion coefficient, and the possibility of safety accidents such as explosion and the like caused by high-temperature expansion is low.
The operation process of the heat exchange device applied to the hydrogen fuel cell is as follows: the hydrogen-containing gas, liquid or mixture to be subjected to heat exchange flows into the heat exchange tank 1 through the first heat exchange tube 3, the heat exchange tank 1 is filled with a heat exchange medium (most commonly air), the heat exchange medium obtains heat or cold from the first heat exchange tube 3 at high temperature or low temperature, and transmits the obtained heat or cold to the second heat exchange tube 4 and the working fluid inside the second heat exchange tube 4, so that energy conduction between the fluid to be subjected to heat exchange in the first heat exchange tube 3 and the working fluid inside the second heat exchange tube 4 is realized.
By adopting the technical scheme, on one hand, the first heat exchange tube 3, the second heat exchange tube 4 and the corresponding heat exchange media are arranged in the heat exchange tank 1, so that heat exchange is fully performed in a relatively small space, the first heat exchange tube 3 and the second heat exchange tube 4 with different thicknesses, different materials, different lengths and different bending degrees can be replaced according to different required heat exchange efficiencies, and meanwhile, the high-efficiency conversion of the heat exchange efficiency can be realized by adjusting the type, pressure, concentration and the like of the heat exchange media. Compared with a plate type heat exchanger, the heat exchange device applied to the hydrogen fuel cell has the obvious advantages of small size and adjustable heat exchange efficiency, and particularly, the middle heat exchange medium can be replaced, so that the adjustment potential of the heat exchange efficiency is greatly improved.
Alternatively, in the heat exchange device applied to the hydrogen fuel cell according to the embodiment of the present invention, the portion of the first heat exchange tube 3 inside the heat exchange tank 1 is spiral.
As shown in fig. 2 and 3, the first heat exchange tube 3 is located closest to the inner wall of the heat exchange tank 1 and has a spiral shape. This is because the longer the length of the first heat exchange tube 3 within the heat exchange tank 1, the larger the heat radiation area, and thus the higher the heat exchange efficiency, when the first heat exchange tube 3 is located closest to the inner wall of the heat exchange tube.
One possible spiral shape of the first heat exchange tube 3 is: a spindle-shaped spiral. The spindle-shaped helix enables the effective length of the first heat exchange tube 3 to be as long as possible, and meanwhile, under the condition of heat conduction between the heat exchange tank 1 and the environment, a part of heat or cold can be conducted out of the heat exchange tank 1, so that the heat efficiency is further improved.
Therefore, by adopting the technical scheme, the heat exchange efficiency of the first heat exchange tube 3 in the heat exchange tank 1 can be improved as much as possible.
Alternatively, in the heat exchange device applied to the hydrogen fuel cell according to the embodiment of the present invention, as shown in fig. 2 and 4, the portion of the second heat exchange pipe 4 inside the heat exchange tank 1 is spiral.
It should be noted that, when the first heat exchange tube 3 has a spindle-shaped spiral, the second heat exchange tube 4 also has a spindle-shaped spiral, so as to improve the heat exchange efficiency.
By adopting the technical scheme, the heat exchange length and the effective heat exchange area of the second heat exchange tube 4 are improved, so that the heat efficiency which can be conducted between the first heat exchange tube 3 and the second heat exchange tube 4 is higher.
Alternatively, the first heat exchange tube 3 and the second heat exchange tube 4 are arranged in parallel with each other in the heat exchange device applied to the hydrogen fuel cell according to the embodiment of the present invention.
By adopting the technical scheme, in order to ensure that the distance between the second heat exchange tube 4 and the first heat exchange tube 3 is uniform, the heat transfer efficiency is relatively uniformly transferred between the first heat exchange tube 3 and the second heat exchange tube 4, so that the state of the fluid in the first heat exchange tube 3 is relatively consistent, a section of liquid state and a section of gaseous state boiling state cannot occur in the first heat exchange tube 3, and the heat exchange efficiency between the first heat exchange tube 3 and the second heat exchange tube 4 is prevented from being influenced.
Optionally, an embodiment of the present invention provides a heat exchange device applied to a hydrogen fuel cell, further including: the pump 5 is regulated.
The inlet of the regulating pump 5 is communicated with the inside of the heat exchange tank 1.
The adjusting pump 5 is used for adjusting the heat exchange medium in the heat exchange tank 1, for example, when the heat exchange efficiency needs to be reduced, part of the heat exchange medium is pumped out of the heat exchange tank 1, so that the heat exchange efficiency between the first heat exchange pipe 3 and the second heat exchange pipe 4 is reduced.
By adopting the technical scheme, when the flow velocity of the fluid in the first heat exchange tube 3 and the second heat exchange tube 4 is not changed or the flow velocity is still difficult to meet the heat exchange regulation efficiency after the change of the flow velocity, the heat exchange efficiency between the first heat exchange tube 3 and the second heat exchange tube 4 is regulated by regulating the amount of the heat exchange medium, and the effects of supplementing regulation and improving the regulation capacity and sensitivity are achieved.
Alternatively, as shown in fig. 3, the heat exchange device applied to the hydrogen fuel cell according to the embodiment of the present invention further includes: and a buffer tank 6.
The inlet of the buffer tank 6 is connected to the outlet of the regulating pump 5.
One possible buffer tank 6 is a pressure tank.
By adopting the technical scheme, when the heat exchange medium in the heat exchange pipe needs to be adjusted, the heat exchange medium is conveyed into the buffer tank 6 through the regulating pump 5, so that the heat exchange medium is prevented from being discharged into the air, and the production and air pollution are prevented from being influenced or potential safety hazards are prevented from being caused.
Alternatively, the regulating pump 5 is a bidirectional pump as applied to the heat exchange device of the hydrogen fuel cell.
By adopting the technical scheme, the double adjustment for realizing the reduction and the increase of the heat exchange medium is realized.
Optionally, an embodiment of the present invention provides a heat exchange device applied to a hydrogen fuel cell, further including: and (4) releasing the valve.
The pressure release valve is arranged on the fixed cover 2 and communicated with the interior of the heat exchange tank 1.
By adopting the technical scheme, in order to increase safety measures for the heat exchange tank 1, when some heat exchange media are not discharged through the regulating pump, the heat exchange media are discharged through the pressure release valve in time, and potential safety hazards such as explosion are avoided.
In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A heat exchange device for use in a hydrogen fuel cell, comprising: the heat exchange device comprises a heat exchange tank, a fixed cover, a first heat exchange tube, a second heat exchange tube and a heat exchange medium;
the fixed cover is arranged at the port of the heat exchange tank, and a first heat exchange hole, a second heat exchange hole, a third heat exchange hole and a fourth heat exchange hole are formed in the fixed cover;
the first heat exchange tube is arranged in the heat exchange tank, an inlet of the first heat exchange tube is arranged in the first heat exchange hole, and an outlet of the first heat exchange tube is arranged in the second heat exchange hole;
the second heat exchange tube is arranged in the heat exchange tank, an inlet of the second heat exchange tube is arranged in the third heat exchange hole, and an outlet of the second heat exchange tube is arranged in the fourth heat exchange hole;
the heat exchange medium is arranged in the heat exchange tank and used for heat exchange between the first heat exchange tube and the second heat exchange tube.
2. The heat exchange device of claim 1, wherein the portion of the first heat exchange tube within the heat exchange tank is helical.
3. The heat exchange device of claim 1, wherein the portion of the second heat exchange tube within the heat exchange tank is helical.
4. A unit according to claim 2 or 3 in which the first and second heat exchange tubes are arranged parallel to one another.
5. The heat exchange device of claim 4, further comprising: adjusting the pump;
and the inlet of the regulating pump is communicated with the interior of the heat exchange tank.
6. The heat exchange device of claim 5, further comprising: a buffer tank;
and the inlet of the buffer tank is communicated with the outlet of the regulating pump.
7. The heat exchange device of claim 6, wherein the conditioning pump is a bi-directional pump.
8. The heat exchange device of claim 7, further comprising: a pressure relief valve;
the pressure release valve is arranged on the fixed cover and communicated with the inner part of the heat exchange tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736626.9A CN113497248A (en) | 2021-06-30 | 2021-06-30 | Heat exchange device applied to hydrogen fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736626.9A CN113497248A (en) | 2021-06-30 | 2021-06-30 | Heat exchange device applied to hydrogen fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113497248A true CN113497248A (en) | 2021-10-12 |
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| CN114636091A (en) * | 2022-04-19 | 2022-06-17 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Solid-state hydrogen storage tank of circulation type heat transfer |
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