CN114156504B - Heat exchange cooling device and heat exchange cooling method between hydrogen fuel cell and air compressor - Google Patents
Heat exchange cooling device and heat exchange cooling method between hydrogen fuel cell and air compressor Download PDFInfo
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- CN114156504B CN114156504B CN202111413409.2A CN202111413409A CN114156504B CN 114156504 B CN114156504 B CN 114156504B CN 202111413409 A CN202111413409 A CN 202111413409A CN 114156504 B CN114156504 B CN 114156504B
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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
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
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- 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
Abstract
The invention belongs to a heat exchange cooling device between a hydrogen fuel cell and an air compressor, which comprises a hollow cylinder body, wherein the hollow cylinder body is used for connecting an outlet of the air compressor with a hydrogen fuel cell stack; the heat exchange cooling truss provided by the invention can generate disturbance to high-temperature high-pressure air, and meanwhile, guide the cooling air to be stuck to the wall surface of the channel, fully exchange heat with the wall surface, strengthen the convection heat exchange, and play a role in reducing flow resistance, so that the cold air utilization efficiency is improved; meanwhile, the cooling structure has better mechanical property, so that the bearing capacity of the cylinder body to compressed high-temperature and high-pressure air is correspondingly improved, the structural property of the cylinder body is enhanced, and the service life and reliability of a high-temperature air channel between the air compressor and the hydrogen fuel cell are improved.
Description
Technical Field
The invention belongs to an air cooling heat exchange device for a hydrogen fuel cell, and particularly relates to a heat exchange cooling structure and a heat exchange cooling method for a high-altitude cruising hydrogen fuel cell.
Background
Hydrogen is used as one of renewable energy sources, and the product of the bioelectrochemical reaction is only water, so that the hydrogen is an important technical path for realizing pollution-free, zero emission and carbon neutralization. The technology of the fuel cell taking hydrogen as a working medium is developed for decades, has now revealed a huge application prospect in the transportation field, and all large automobiles and aircraft enterprises all around the world have corresponding pre-research projects, especially in the automobile field, the Honda industry, the steam feeding industry and the like have been deeply ploughed for many years in the hydrogen fuel cell automobile field, so that partial mass production is realized. In the aeronautical field, there are advances in hydrogen fuel cell aircraft and power systems for ro, aeronautics, boeing, german aerospace, united states aerospace, etc.
One of the core components of the hydrogen fuel cell is a fuel cell stack, hydrogen provided by a gas source and oxygen-containing air in the environment are subjected to ion exchange in the fuel cell stack through a proton exchange membrane, so that voltage output is realized, the horsepower output of an internal combustion engine is improved by improving air pressure similar to a turbocharger, and the hydrogen fuel cell also needs to meet the power output requirement through air pressurization.
Generally, the optimum operating pressure for a hydrogen fuel cell stack is 1.3 atmospheres. For a hydrogen fuel cell for an automobile, the pressurizing load of the air compressor is low. For aeronautical applications, the air pressure is much lower than the ground due to the rarefaction of the high altitude atmosphere. For example, at 20km high altitude, a boost of 20 pressure ratio is required to achieve a boost from ambient atmosphere to 1.3 atmospheres. On the one hand, there is a need for an air compressor design with extremely high pressure ratios; on the other hand, the high pressure ratio entails that the high temperature charge air needs to be cooled efficiently before it can enter the fuel cell for chemical reactions. Because the cooling scheme with low cost, small volume and low weight is particularly critical for the aviation hydrogen fuel cell air compressor.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provide a special working environment of an aircraft driven by a high-altitude cruising hydrogen fuel cell, and in order to realize low-flow-resistance high-efficiency cooling in a limited space, the invention is used for providing high-pressure air required by the hydrogen fuel cell and organically combining flow and heat exchange to achieve the effect of enhancing heat exchange.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the heat exchange cooling device comprises a hollow cylinder body for connecting an outlet of the air compressor with a hydrogen fuel cell stack, wherein a channel formed by a hollow cavity of the hollow cylinder body is an air duct, the outer side of the hollow cylinder body is a cold air circulation area, and high-temperature air in the air duct exchanges heat with the cold air circulation area in a convection manner at the cylinder wall of the hollow cylinder body; the high-temperature and high-pressure air discharged from the outlet of the air compressor enters the hydrogen fuel cell stack through the heat exchange cooling truss in the air duct to pressurize the hydrogen fuel cell stack;
the heat exchange cooling truss comprises at least two cross trusses which are sequentially arranged in the air duct, four connecting end points of the cross trusses are fixedly connected with the inner cavity of the hollow cylinder body, and the four connecting end points are arranged on the same circumferential surface of the hollow cylinder body;
the cross truss consists of at least two truss rods, and in the flowing direction of the high-temperature high-pressure air, the center cross point of the cross truss is positioned behind the four connecting end points, so that the cross truss is a bent cross truss with a protruding center;
the rotation stagger angle of two adjacent cross trusses with the center crossing point as the center is gamma, and gamma is 0-45 degrees; if the diameter of the truss rod is d, the distance L between the center crossing points of the two adjacent cross trusses is:
d≤L≤10d。
furthermore, the cross truss consists of four truss rods, and one ends of the four truss rods are fixedly connected with each other to form the center cross point; the four truss hacks are respectively a first truss hack lever, a second truss hack lever, a third truss hack lever and a fourth truss hack lever, wherein the central shafts of the first truss hack lever and the third truss hack lever are located on the same plane, and the central shafts of the second truss hack lever and the fourth truss hack lever are located on the same plane.
Furthermore, a bending connection slope angle is arranged at the intersecting end of the four truss rods, so that a connection gap is formed at the intersecting end of the four truss rods, a welding sphere with the vertex of the connection slope angle as a sphere center and the diameter of F is arranged on the connection gap in a spot welding mode, and the diameter F of the welding sphere is equal to the diameter d of the truss rod.
Further, the diameter of the truss rod is d, and the length is H; the diameter of the hollow cylinder body is D, the included angle between two adjacent connecting lines of the center intersection point and the connecting end point is theta, the theta angle is the bending inclination angle of the cross truss, and theta is 0-45 degrees, and then the relation between the length H of the truss rod and the diameter D of the hollow cylinder body is:
D/2＝H×cosθ。
further, the included angle θ between the center intersection and two adjacent connecting lines connecting the end points is 45 °.
Further, the ratio of the diameter D of the truss rod to the diameter D of the hollow cylinder is in the range of: 0.15 to 0.4.
Further, the rotation stagger angle is gamma and is 45 degrees.
Further, the hollow cylinder body is a cylinder, and the hollow cavity of the hollow cylinder body is a cylindrical cavity; the center intersection of the cross truss is arranged on the central axis of the hollow cylinder.
Further, in the air inlet section or the middle section or the outlet section of the hollow cylinder, the cross trusses are arranged in a periodic manner in the hollow cylinder, and the arrangement period distance is 2L. According to actual engineering needs, the cross structure can be encrypted and arranged according to the cycle distance, so that the heat exchange capacity of each section is inconsistent, and the temperature uniformity is improved.
The invention also provides a heat exchange cold cooling method of the heat exchange cooling device between the hydrogen fuel cell and the air compressor,
in the high-temperature air duct, high-temperature high-pressure air flow directly impacts the truss rod, air flow is disturbed on the truss rod to form column-winding air flow, the column-winding air flow is influenced by the bending inclination angle theta of the cross truss and deflects towards the inner wall surface of the hollow cylinder body, and the heat load in the air flow is brought to the wall surface;
meanwhile, the high-temperature high-pressure air exchanges heat with the wall of the hollow cylinder body through the cross truss, so that part of heat load is taken away, and turbulent flow is generated after the air flow bypasses the truss rod, so that the heat load transmission is enhanced.
The beneficial effects of the invention are as follows: according to the invention, high-temperature and high-pressure air from the air compressor flows in the cylinder and directly contacts with main flow high-temperature air, normal heat exchange airflow is arranged outside the cylinder, and a cross truss structure bent at a staggered angle is arranged in the cylinder duct; on the other hand, the high-temperature and high-pressure air is blocked from directly entering the hydrogen fuel cell reactor, which is equivalent to partially preprocessing the high-temperature air. Meanwhile, the cross combined structure with the staggered angle and the forward bent cross can effectively fix the cooling channel, so that the cooling structure has good mechanical property, the bearing capacity of the cylinder body on compressed high-temperature and high-pressure air is correspondingly improved, the structural property of the cylinder body is enhanced, and the service life and the reliability of the high-temperature air channel between the air compressor and the hydrogen fuel cell are improved;
the specific two-by-two cross truss structures are combined at a certain staggered angle, the flow direction of high-temperature fluid in the channel is directly acted, namely, the high-temperature fluid is changed, the high-temperature fluid is guided to form a rotational flow structure (longitudinal dispersion) along the flow direction, the heat exchange effect is improved, the high-temperature fluid can be flexibly arranged according to the characteristics of high rib efficiency at the inlet of the cylinder and low rib efficiency at the outlet of the cylinder, the high-temperature fluid can be rapidly cooled or rapidly heated, the solid rate is increased at the inlet or the outlet, the arrangement density can be increased, and the purpose of uniform temperature or the purpose of maximizing heat exchange can be achieved;
meanwhile, the invention is based on the special working environment of the aircraft driven by the high-altitude cruising hydrogen fuel cell, and the flow and heat exchange are organically combined by changing the structural characteristics based on the characteristics of enhanced flow and enhanced heat exchange so as to achieve the effect of enhancing the heat exchange. There has been no design or solution for interstage cooling of high altitude fuel cell air compressors heretofore; secondly, the staggered angle forward bending cross combined structure also belongs to a novel structure, and the staggered angle combined form is never proposed; in addition, the cooling effect of the functionally gradient arrangement of the cooling structure is still relatively lack of research, and few publications are available at present. Through numerical calculation, the structure of the invention has proved to have very obvious heat exchange enhancement effect.
Drawings
FIG. 1 is a schematic view of the installation position of the present invention;
FIG. 2 is a schematic diagram of a cross truss structure unit and array thereof in accordance with the present invention;
FIG. 3 is a schematic view of a cross truss structure unit structure of the present invention;
FIG. 4 is a schematic cross-sectional view of a cross truss structure unit of the present invention;
FIG. 5 is a schematic view of the structure of the hollow cylinder of the present invention with a cross truss disposed in the cavity;
FIG. 6 is a schematic cross-sectional view of a cross truss cooling structure of the present invention;
FIG. 7 is a schematic diagram of the local coupling of the cross truss cooling structure of the present invention;
FIG. 8 is a diagram illustrating the internal air flow configuration of the cross truss cooling structure of the present invention;
FIG. 9 is a graph showing the temperature profile of the middle section of the cross truss cooling structure of the present invention;
fig. 10 is a cooling effect cloud of the cross truss cooling structure of embodiment 2 of the present invention.
In the figure: 1. a cross truss; 11. a center intersection; 12. connecting endpoints; 2 truss rods; 21. a first truss bar; 22. a second truss rod; 23. a third truss bar; 24. the fourth truss rod and the fourth truss rod are 25, and are bent to connect with a slope angle; 26. a connection notch; 3. a hollow cylinder; 4. an air duct; 5. a cool air circulation area.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
In order to achieve the above object, the present invention provides the following embodiments:
example 1: as shown in fig. 1-6, a heat exchange cooling device between a hydrogen fuel cell and an air compressor comprises a hollow cylinder body 3 for connecting an outlet of the air compressor with a hydrogen fuel cell stack, wherein a channel formed by a hollow cavity of the hollow cylinder body 3 is an air duct 4, the outer side of the hollow cylinder body 3 is a cold air circulation area 5, and high-temperature air in the air duct 4 exchanges heat with the cold air circulation area 5 in a convection manner at the cylinder wall of the hollow cylinder body 3; the high-temperature and high-pressure air discharged from the outlet of the air compressor enters the hydrogen fuel cell stack through the heat exchange cooling truss in the air duct 4 to pressurize the hydrogen fuel cell stack;
the heat exchange cooling truss comprises at least two cross trusses 1, wherein the cross trusses 1 are composed of four truss rods 2, and one ends of the four truss rods 2 are fixedly connected with each other to form a center cross point 11; the hollow cylinder body 3 is a cylinder, and the hollow cavity of the hollow cylinder body 3 is a cylindrical cavity; the center intersection 11 of the cross truss 1 is arranged on the central axis of the hollow cylinder 3;
the four truss hacks 2 are respectively a first truss hack lever 21, a second truss hack lever 22, a third truss hack lever 23 and a fourth truss hack lever 24, wherein the central axes of the first truss hack lever 21 and the third truss hack lever 23 are positioned on the same plane, and the central axes of the second truss hack lever 22 and the fourth truss hack lever 24 are positioned on the same plane; the two cross trusses 1 are sequentially arranged in the air duct 4, four connecting end points 12 of the cross trusses 1 are fixedly connected with the inner cavity of the hollow cylinder body 3, and the four connecting end points 12 are arranged on the same peripheral surface of the hollow cylinder body 3; as shown in fig. 4, a bending connection slope angle 25 is arranged at the crossing point of the crossing ends of the four truss rods 2, so that a connection notch 26 is formed at the crossing ends of the four truss rods 2, a welding sphere with the top of the connection slope angle 25 as a sphere center and the diameter of F is arranged on the connection notch 26 in a spot welding manner, and the diameter F of the welding sphere is equal to the diameter d of the truss rod 2. The variation range of the ratio of the diameter D of the truss rod 2 to the diameter D of the hollow cylinder 3 is as follows: 0.15 to 0.4.
The cross truss 1 is composed of at least two truss rods 2, and in the flowing direction of the high-temperature and high-pressure air, the center cross point 11 of the cross truss 1 is positioned behind the four connecting end points 12, so that the cross truss 1 is a bent cross truss with a protruding center;
the rotation stagger angle of two adjacent cross trusses 1 with the center intersection 11 as the center is gamma, and gamma is 0-45 degrees; if the diameter of the truss rod 2 is d, the distance L between the center intersections 11 of the two adjacent cross trusses 1 is:
d≤L≤10d。
setting the diameter of the truss rod 2 as d and the length as H; the diameter of the hollow cylinder 3 is D, the included angle between two adjacent connecting lines of the central intersection 11 and the connecting end point 12 is θ, the θ angle is the bending inclination angle of the cross truss 1, and θ is 0 ° to 45 °, and then the relationship between the length H of the truss rod 2 and the diameter D of the hollow cylinder 3 is:
D/2＝H×cosθ。
the cross truss 1 and the hollow cylinder 3 together form a cooling structure between the air compressor and the hydrogen fuel cell stack: the cross trusses 1 are arranged along the flow direction according to the arrangement period, and the staggered angle forward bending cross combined structure is encrypted or sparse near the inlet or the outlet of the cooling structure according to actual requirements.
Referring to fig. 1, 2 and 4, the outside of the flow passage of the high temperature air a from the air compressor is a cool air circulation area 5. The cross trusses 1 are uniformly or functionally gradient arranged in the hollow cylinder body 3, each cross truss 1 is required to be closely connected with the hollow cylinder body 3, the cross trusses 1 are fixed with the inner wall of the hollow cylinder body 3 in a surface contact welding mode, and an integral structure with a complete structure is formed.
Fig. 2 also shows the arrangement of the structural units of the cross truss 1 and the array structure, wherein the structural units of the front cross truss 1 are arranged in a dashed frame, the four truss rods are intersected at one point, and the gaps at the intersection point take the intersected top as a sphere center and supplement spheres with the diameter d, so that the four truss rods are connected into a whole. In general, four truss rods have the same inclination angle, length and diameter, and form a forward-bent cross structure, and the structure can also be regarded as that one truss rod rotates around the center line of the cylinder body. The tail end of the cross truss 1 structure is connected with the inner wall of the hollow cylinder body 3, the top point is positioned on the central line of the hollow cylinder body 3, the next cross truss 1 structure is obtained by translating along the central line of the hollow cylinder body after rotating by a certain staggered angle gamma from the previous cross truss 1 structure, and the distance L between the adjacent forward-bent cross structures on the central line is a non-constant value.
Along with the change of the angle, the length of the truss rod 2 is changed, the heat conduction capacity is changed, and the flow resistance to the fluid is also changed; the increase or decrease in diameter affects the solids fraction and the change in contact area with the fluid, and the diameter affects the change in flow resistance and heat exchange performance. The degree of density of the array structure can be controlled by the spacing L of the cross truss 1 monomers, when the spacing is a constant value, the front bent cross combined structure array is a regular structure, and when the form of the array structure changes, the disturbance mixing of impact jet flow also changes, so that the cooling efficiency of the internal cooling structure changes and the cold air consumption changes.
The cooling structure of the cross combined structure with the staggered angle forward bending is generally used between the air compressor of the aircraft driven by the high-altitude cruising hydrogen fuel cell and the hydrogen fuel cell reactor and is used for replacing a high-pressure air channel compressed by the traditional air compressor when in implementation, and particularly the technical scheme is more suitable for a high-temperature section of the compressed air channel because the cross truss 1 combined structure is adopted, on one hand, a turbulent flow effect can be generated through the structure, the convection heat exchange is enhanced, and the cooling efficiency is improved; on the other hand, the front bent cross structure which is uniformly or functionally arranged in a gradient way is arranged inside the cylinder body, so that the structural performance of the cylinder body is enhanced, and the service life of the pipeline is effectively prolonged.
Example 2: as shown in fig. 10, the same as embodiment 1, except that the angle θ between the center intersection 11 and two adjacent lines connecting the end points 12 is 45 °; the rotation stagger angle is gamma and is 45 degrees; when the included angle theta is 45 degrees, the central air flow can be better guided to flow to the wall surface, when the rotation stagger angle gamma is 45 degrees, two adjacent cross forward-bending structures can more uniformly disturb the air flow, and the cross truss 1 is periodically arranged in the hollow cylinder 3 at the air inlet section or the middle section or the outlet section of the hollow cylinder 3, the periodic distance is 2L, namely, the cross structures are encrypted according to the periodic distance, so that the heat exchange capacity of each section is inconsistent, and the temperature uniformity is improved. Fig. 10 shows a process in which the hot fluid is cooled by a circular tube at a lower constant temperature of the wall surface. It can be seen that in the flow direction of the main stream high temperature air, the cross truss 1 structure is adopted in the hollow cylinder 3, so that the local temperature is effectively reduced by blending the internal flow structure, and finally the temperature of the outlet high temperature air is reduced. The flow heat exchange data result with this structure gives the conditions: the flow rate of the main flow high-temperature gas is 55m/s, the temperature is 150 ℃, the wall temperature is-40 ℃, the outlet gas temperature is about 115 ℃, and the inlet and outlet pressure difference is 1.59KPa.
Example 3: as shown in fig. 7, 8 and 9, the present invention further provides a heat exchange cooling method of a heat exchange cooling device between a hydrogen fuel cell and an air compressor, in the high-temperature air duct, a high-temperature and high-pressure air flow C1 directly impacts the truss rod, the air flow on the truss rod is disturbed to form a column-winding air flow C2, the column-winding air flow C2 is influenced by a bending inclination angle θ of the cross truss, and deflects towards an inner wall surface of the hollow cylinder, so as to bring a heat load in the air flow to the wall surface; meanwhile, the high-temperature high-pressure air exchanges heat with the wall of the hollow cylinder body through the cross truss, so that part of heat load is taken away, turbulent flow C3 is generated after the air flows bypass the truss rods, the heat load transmission is enhanced, and as can be seen in FIG. 7, the air streamline direction behind the cross truss 1 is disordered, namely turbulent flow C3; meanwhile, as shown in fig. 9, in the flow direction of the air duct 4 in the hollow cylinder 3, the temperature of the compressed air gradually decreases after encountering the device provided by the invention, namely, the compressed air is effectively and safely pressurized and cooled for the air used by the hydrogen fuel cell stack.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The heat exchange cooling device between the hydrogen fuel cell and the air compressor is characterized by comprising a hollow cylinder body (3) for connecting an outlet of the air compressor and a hydrogen fuel cell stack, wherein a channel formed by a hollow cavity of the hollow cylinder body (3) is an air duct (4), the outer side of the hollow cylinder body (3) is a cold air circulation area (5), and high-temperature air in the air duct (4) exchanges heat with the cold air circulation area (5) in a convection way on the cylinder wall of the hollow cylinder body (3); the high-temperature and high-pressure air discharged from the outlet of the air compressor enters the hydrogen fuel cell stack through the heat exchange cooling truss in the air duct (4) to pressurize the hydrogen fuel cell stack;
the heat exchange cooling truss comprises at least two cross trusses (1), wherein the two cross trusses (1) are sequentially arranged in the air duct (4), four connecting end points (12) of the cross trusses (1) are fixedly connected with the inner cavity of the hollow cylinder body (3), and the four connecting end points (12) are arranged on the same peripheral surface of the hollow cylinder body (3);
the cross truss (1) is composed of at least two truss rods (2), and in the flowing direction of the high-temperature high-pressure air, the center cross point (11) of the cross truss (1) is positioned behind the four connecting end points (12), so that the cross truss (1) is a bent cross truss with a protruding center;
the rotation stagger angle of two adjacent cross trusses (1) which takes the center intersection point (11) as the center of a circle is gamma, and the gamma is 0-45 degrees; if the diameter of the truss rod (2) is d, the distance L between the center crossing points (11) of the two adjacent cross trusses (1) is as follows:
d≤L≤10d。
2. the heat exchange cooling device between the hydrogen fuel cell and the air compressor as claimed in claim 1, wherein the cross truss (1) is composed of four truss rods (2), and one ends of the four truss rods (2) are fixedly connected with each other to form the center cross point (11); the four truss hacks (2) are respectively a first truss hack lever (21), a second truss hack lever (22), a third truss hack lever (23) and a fourth truss hack lever (24), wherein the central shafts of the first truss hack lever (21) and the third truss hack lever (23) are located on the same plane, and the central shafts of the second truss hack lever (22) and the fourth truss hack lever (24) are located on the same plane.
3. The heat exchange cooling device between the hydrogen fuel cell and the air compressor according to claim 2, wherein a bending connection slope angle (25) is arranged at the intersecting end of the four truss rods (2), so that a connection gap (26) is formed at the intersecting end of the four truss rods (2), a welding sphere with the vertex of the connection slope angle (25) as a sphere center and the diameter of F is arranged on the connection gap (26) in a spot welding manner, and the diameter of F of the welding sphere is equal to the diameter of d of the truss rods (2).
4. The heat exchange cooling device between a hydrogen fuel cell and an air compressor according to claim 1, wherein the truss rod (2) has a diameter d and a length H; the diameter of the hollow cylinder body (3) is D, the included angle between two adjacent connecting lines of the center cross point (11) and the connecting end point (12) is theta, the theta angle is the bending inclination angle of the cross truss (1), and the theta angle is 45 degrees, and then the relation between the length H of the truss rod (2) and the diameter D of the hollow cylinder body (3) is:
D/2=H×cosθ。
5. the heat exchange cooling device between a hydrogen fuel cell and an air compressor as claimed in claim 4, wherein the ratio of the diameter D of the truss rod (2) to the diameter D of the hollow cylinder (3) is in a range of: 0.15 to 0.4.
6. The heat exchange cooling device between a hydrogen fuel cell and an air compressor as claimed in any one of claims 1 to 5, wherein the rotation error angle is γ 45 °.
7. The heat exchange cooling device between a hydrogen fuel cell and an air compressor as claimed in any one of claims 1 to 5, wherein the hollow cylinder (3) is a cylinder, and the hollow cavity of the hollow cylinder (3) is a cylindrical cavity; the center cross point (11) of the cross truss (1) is arranged on the central axis of the hollow cylinder (3).
8. A heat exchange cooling device between a hydrogen fuel cell and an air compressor according to any one of claims 1-5, wherein the cross truss (1) is periodically arranged in the hollow cylinder (3) at a period distance of 2L in the air inlet section or the middle section or the outlet section of the hollow cylinder (3).
9. A heat exchange cooling method of a heat exchange cooling device between a hydrogen fuel cell and an air compressor as defined in any one of claims 4 to 8,
in the high-temperature air duct (4), high-temperature high-pressure air flow (C1) directly impacts the truss rod (2), air flow is disturbed on the truss rod (2) to form column winding air flow (C2), and the column winding air flow (C2) is influenced by the bending inclination angle theta of the cross truss (1) to deflect towards the inner wall surface of the hollow cylinder body (3) so as to bring heat load in the air flow to the wall surface;
meanwhile, the high-temperature high-pressure air exchanges heat with the cylinder wall of the hollow cylinder body (3) through the cross truss (1), part of heat load is taken away, and turbulent flow (C3) is generated after the air flow bypasses the truss rod (2), so that heat load transmission is enhanced.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170118415A (en) * | 2016-04-15 | 2017-10-25 | 현대자동차주식회사 | Hydrogen heating and fluid cooling apparatus of fuel cell system |
| CN109818016A (en) * | 2019-01-29 | 2019-05-28 | 福州大学 | A kind of open fuel battery temperature self-adjusting method of cathode |
| CN111244506A (en) * | 2020-01-17 | 2020-06-05 | 擎能动力科技(苏州)有限公司 | New energy automobile fuel cell system, working method, hydrogen gas inlet flow calculation method and efficiency evaluation method |
| JP2020139722A (en) * | 2019-03-01 | 2020-09-03 | トヨタ自動車株式会社 | Heat exchanger and cooling structure |
| CN113074387A (en) * | 2021-04-29 | 2021-07-06 | 北京航空航天大学 | Regenerative cooling channel with truss structure |
| CN113130937A (en) * | 2021-05-26 | 2021-07-16 | 北京亿华通科技股份有限公司 | Heat exchange device, fuel cell system and temperature control method thereof |
| CN113339843A (en) * | 2021-07-16 | 2021-09-03 | 西北工业大学 | Polyhedral truss-structured heat shield for aircraft engine combustion chamber and method for forming gas film |
| CN113483354A (en) * | 2021-07-16 | 2021-10-08 | 西北工业大学 | Bent truss structure heat shield for afterburner and method for forming gas film |
| CN113551258A (en) * | 2021-08-31 | 2021-10-26 | 西北工业大学 | Truss type double-wall heat insulation device for engine combustion chamber and cold air film forming method |
| CN113669756A (en) * | 2021-08-31 | 2021-11-19 | 西北工业大学 | Double-layer double-effect heat insulation wall for afterburner cavity and double-effect cooling method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8268510B2 (en) * | 2008-12-22 | 2012-09-18 | GM Global Technology Operations LLC | Fuel cell fabrication using photopolymer based processes |
-
2021
- 2021-11-25 CN CN202111413409.2A patent/CN114156504B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170118415A (en) * | 2016-04-15 | 2017-10-25 | 현대자동차주식회사 | Hydrogen heating and fluid cooling apparatus of fuel cell system |
| CN109818016A (en) * | 2019-01-29 | 2019-05-28 | 福州大学 | A kind of open fuel battery temperature self-adjusting method of cathode |
| JP2020139722A (en) * | 2019-03-01 | 2020-09-03 | トヨタ自動車株式会社 | Heat exchanger and cooling structure |
| CN111244506A (en) * | 2020-01-17 | 2020-06-05 | 擎能动力科技(苏州)有限公司 | New energy automobile fuel cell system, working method, hydrogen gas inlet flow calculation method and efficiency evaluation method |
| CN113074387A (en) * | 2021-04-29 | 2021-07-06 | 北京航空航天大学 | Regenerative cooling channel with truss structure |
| CN113130937A (en) * | 2021-05-26 | 2021-07-16 | 北京亿华通科技股份有限公司 | Heat exchange device, fuel cell system and temperature control method thereof |
| CN113339843A (en) * | 2021-07-16 | 2021-09-03 | 西北工业大学 | Polyhedral truss-structured heat shield for aircraft engine combustion chamber and method for forming gas film |
| CN113483354A (en) * | 2021-07-16 | 2021-10-08 | 西北工业大学 | Bent truss structure heat shield for afterburner and method for forming gas film |
| CN113551258A (en) * | 2021-08-31 | 2021-10-26 | 西北工业大学 | Truss type double-wall heat insulation device for engine combustion chamber and cold air film forming method |
| CN113669756A (en) * | 2021-08-31 | 2021-11-19 | 西北工业大学 | Double-layer double-effect heat insulation wall for afterburner cavity and double-effect cooling method |
Non-Patent Citations (3)
| Title |
|---|
| "Comparison of theories for stability of truss structures. Part 2: Computation of critical solution of stability";Sun Huanchun等;《Commun Nonlinear Sci Numer Simulat》;第14卷;第1711-1720页 * |
| "Ｘ型桁架阵列通道流动及传热性能的数值研究";席雷等;《西安交通大学学报》;第55卷(第8期);第101-110页 * |
| "交错肋结构涡轮叶片内部冷却通道的流动换热特性研究";张志强等;《科学技术与工程》;第16卷(第10期);第140-144、163页 * |
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