WO2015016076A1 - 水素ガスの冷却方法及び水素ガスの冷却システム - Google Patents
水素ガスの冷却方法及び水素ガスの冷却システム Download PDFInfo
- Publication number
- WO2015016076A1 WO2015016076A1 PCT/JP2014/069030 JP2014069030W WO2015016076A1 WO 2015016076 A1 WO2015016076 A1 WO 2015016076A1 JP 2014069030 W JP2014069030 W JP 2014069030W WO 2015016076 A1 WO2015016076 A1 WO 2015016076A1
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- WIPO (PCT)
- Prior art keywords
- brine
- hydrogen gas
- flow path
- temperature
- outlet
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/086—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning having one or more openings therein forming tubular heat-exchange passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for heat-exchange media
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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
- H01M8/04067—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
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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
- Y02E60/32—Hydrogen storage
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the present invention relates to a hydrogen gas cooling method and a hydrogen gas cooling system.
- Patent Document 1 and Patent Document 2 disclose examples of a cooling method and a cooling system for cooling hydrogen gas before supply to such a fuel cell vehicle.
- a cooling system including a heat exchanger having a container having a filling tank, a gas flow path, and a heat transfer medium flow path is used.
- the packed layer is filled with a heat transfer medium containing metal powder.
- the gas channel and the heat transfer medium channel are spirally drawn into the packed bed from the outside of the container.
- the gas flow path and the heat transfer medium flow path are arranged in close proximity to each other.
- Hydrogen gas flows through the gas flow path.
- a low-temperature heat transfer medium different from the heat transfer medium filled in the filling tank flows through the heat transfer medium flow path.
- Hydrogen gas is cooled by exchanging heat directly with the heat transfer medium flowing through the heat transfer medium flow path or through the heat transfer medium in the filling tank while flowing through the gas flow path.
- a cooling system including a heat exchanger having a double pipe for circulating hydrogen gas and a refrigerant is used.
- a double pipe in which the pressure of the hydrogen supply path and the pressure of the refrigerant supply path are made the same level is used.
- the wall thickness of the inner pipe constituting the boundary between the two supply paths is reduced.
- the heat transfer resistance of the heat exchanger is reduced and the heat exchanger is downsized.
- the amount of refrigerant used as a heat transfer medium can be reduced as compared with the cooling method of Patent Document 1.
- the heat exchanger becomes larger.
- Patent Document 2 it is shown that the pressure of the hydrogen supply path and the pressure of the refrigerant supply path are set to the same level in order to improve the heat transfer efficiency.
- the pressure of hydrogen gas changes every moment. For this reason, even if the pressure control of the hydrogen gas flowing through the hydrogen supply path is performed, the differential pressure between the hydrogen supply path and the refrigerant supply path actually increases.
- the wall thickness of the pipe having a safety factor in consideration of this increasing differential pressure. For this reason, the wall thickness of the tube must eventually be increased, resulting in an increase in the thermal resistance of the tube. In this case, the hydrogen gas flowing through the hydrogen supply path in the inner pipe cannot be sufficiently cooled unless the refrigerant flowing through the refrigerant supply path in the outer pipe is cooled to a lower temperature. For this reason, the energy required for cooling the refrigerant increases.
- the object of the present invention is to reduce the amount of brine used as a heat transfer medium used for cooling hydrogen gas and to cool the brine while simultaneously reducing the size of the heat exchanger and securing the amount of hydrogen gas cooling. An increase in required energy is suppressed, and hydrogen gas can be sufficiently cooled.
- a method for cooling hydrogen gas according to one aspect of the present invention is a method for cooling hydrogen gas using brine, which is a non-evaporable antifreeze, and includes a plurality of first flow paths arranged as fine flow paths.
- Hydrogen gas into each of the first flow paths so as to move
- the brine flows through each second flow path so that the brine flowing through each second flow path moves from the other side toward the one side in the specific direction, and at the outlet of the second flow path.
- the temperature and flow rate of the brine introduced into each second flow path are controlled so that the temperature of the brine is higher than the temperature of hydrogen gas at the outlet of the first flow path.
- a hydrogen gas cooling system is a cooling system that cools hydrogen gas using brine, which is a non-evaporable antifreeze, and is provided between a refrigerator that cools brine and the refrigerator.
- a heat exchanger that is connected to the refrigerator so that the brine circulates and cools the hydrogen gas by exchanging heat with the brine supplied from the refrigerator, and the brine cooled by the refrigerator.
- a pump that feeds from the refrigerator to the heat exchanger; and a control unit that controls the temperature of the brine.
- the heat exchanger includes a plurality of first flow paths that are fine flow paths through which hydrogen gas is introduced.
- Each of the first flow paths has a first inlet for receiving hydrogen gas and a first outlet for discharging hydrogen gas, and the first inlet and the first outlet are:
- Hydrogen gas introduced from the first inlet to the first flow path and flowing through the first flow path toward the first outlet side is one side in a specific direction orthogonal to the stacking direction of the first layer and the second layer.
- Each of the second flow paths has a second inlet for receiving a brine and a second outlet for discharging the brine, and the second inlet and the second outlet are The brine introduced from the second inlet to the second flow path and flowing through the second flow path to the second outlet side is arranged to move from the other side toward the one side in the specific direction.
- the control unit determines the temperature of the brine at the second outlet. To be higher than the temperature of the hydrogen gas in the first outlet to control the flow rate of the brine in which the pump is sent along with controlling the operation of the refrigerator.
- substrate which forms a 1st flow path in the laminated body of the heat exchanger shown in FIG.
- substrate which forms a 2nd flow path in the laminated body of the heat exchanger shown in FIG.
- This cooling system is used, for example, for cooling hydrogen gas supplied to the fuel cell vehicle 90 (see FIG. 1) in a hydrogen station.
- the hydrogen gas In the hydrogen station, in order to increase the charging efficiency of hydrogen gas into the fuel cell vehicle 90, the hydrogen gas is compressed to a high pressure and then supplied to the fuel cell vehicle 90. As the hydrogen gas is compressed, compression heat is generated.
- the cooling system according to the present embodiment cools the compressed high-pressure hydrogen gas to a low temperature before filling the fuel cell vehicle 90 in order to avoid the temperature rise of the hydrogen gas due to the compression heat.
- the cooling system of the present embodiment includes a refrigerator 2, a tank 4, a first pump 6, a second pump 8, a heat exchanger 10, a controller 58, and a second inlet.
- the temperature detection part 60, the 2nd exit temperature detection part 62, and the 1st exit temperature detection part 64 are provided.
- the refrigerator 2 is a device that cools the brine.
- the refrigerator 2 is configured to be able to change the cooling power for cooling the brine.
- the refrigerator 2 receives a control signal from the control unit 58 as will be described later.
- the refrigerator 2 changes the cooling power according to the received control signal. That is, when the received control signal indicates an increase in cooling power, the refrigerator 2 increases the cooling power in response to the instruction, while the received control signal indicates a decrease in cooling power. If it is, the cooling power is reduced according to the instruction.
- Brine is a non-evaporable antifreeze.
- As the brine for example, ethylene glycol water, fluorine-based liquid, or the like is used.
- the refrigerator 2 has an introduction part 2a and a discharge part 2b.
- the introduction part 2a is a part into which brine heated by heat exchange with the hydrogen gas in the heat exchanger 10 is introduced.
- the discharge part 2b is a part which discharges the brine after the refrigerator 2 cooled.
- the refrigerator 2 cools the brine by heat-exchanging the brine introduced into the refrigerator 2 from the introduction part 2a with a refrigerant such as a low-temperature alternative chlorofluorocarbon.
- the refrigerator 2 discharges the cooled brine from the discharge unit 2b.
- the refrigerator 2 is configured to be able to change the temperature of the refrigerant.
- the refrigerator 2 changes the cooling power for cooling the brine by changing the temperature of the refrigerant.
- the refrigerator 2 decreases the temperature of the refrigerant to increase the cooling power, and the control signal received from the control unit 58. If the instruction is to decrease the cooling power, the temperature of the refrigerant is increased to decrease the cooling power. For example, a brine of ⁇ 30 ° C. is introduced into the refrigerator 2. The refrigerator 2 cools the introduced brine to, for example, ⁇ 40 ° C. or lower.
- Tank 4 is for storing brine.
- a first storage chamber 12 and a second storage chamber 14 are provided in the tank 4.
- the first storage chamber 12 stores the cooled brine discharged from the refrigerator 2.
- the second storage chamber 14 stores the brine after heat exchange discharged from the heat exchanger 10.
- the first storage chamber 12 is connected to the discharge section 2b of the refrigerator 2 via a pipe 18 and is connected to a supply header 28 (to be described later) of the heat exchanger 10 via a pipe 20.
- the second storage chamber 14 is connected to a discharge header 30 (to be described later) of the heat exchanger 10 through a pipe 22 and is connected to the introduction part 2 a of the refrigerator 2 through a pipe 24.
- a partition wall 16 is provided between the first storage chamber 12 and the second storage chamber 14.
- the partition wall 16 prevents the cooled brine stored in the first storage chamber 12 from mixing with the heat-exchanged brine stored in the second storage chamber 14.
- the partition wall 16 is made of a highly heat insulating material. The partition wall 16 prevents heat exchange between the brine stored in the first storage chamber 12 and the brine stored in the second storage chamber 14.
- the first pump 6 is provided in a pipe 20 connected to the outlet of the first storage chamber 12.
- the first pump 6 sucks the brine stored in the first storage chamber 12 and sends it to the heat exchanger 10.
- the first pump 6 is configured to be able to change a flow rate for sending brine per unit time (hereinafter simply referred to as a delivery flow rate).
- the first pump 6 receives a control signal from the control unit 58.
- the first pump 6 changes the delivery flow rate of the brine according to the received control signal. That is, if the received control signal is an instruction to increase the delivery flow rate, the first pump 6 increases the delivery flow rate of brine per unit time according to the instruction, while the received control signal is sent out. If the instruction is to decrease the flow rate, the brine flow rate per unit time is decreased according to the instruction.
- the second pump 8 is provided in a pipe 24 connected to the outlet of the second storage chamber 14.
- the second pump 8 sucks the brine stored in the second storage chamber 14 and sends it out to the introduction part 2 a of the refrigerator 2.
- the second pump 8 is configured to be able to change the brine delivery flow rate per unit time.
- the heat exchanger 10 cools the hydrogen gas compressed by the compressor 100 to a high pressure by exchanging heat with the low-temperature brine.
- the heat exchanger 10 has a large number of microchannels (fine channels).
- the heat exchanger 10 is a so-called microchannel heat exchanger in which heat is exchanged between the fluids while flowing the fluid through the microchannels.
- the heat exchanger 10 includes a laminated body 26 in which a large number of flow paths are provided, a supply header 28 for supplying brine to a second flow path 34 described later in the stacked body 26, and a second flow described later. And a discharge header 30 for discharging brine from the path 34.
- the laminated body 26 has a rectangular parallelepiped outer shape. As shown in FIG. 4, a large number of first flow paths 32 and a large number of second flow paths 34 are provided inside the stacked body 26. Each first flow path 32 and each second flow path 34 are microchannels (fine flow paths).
- the 1st flow path 32 distribute
- the 2nd flow path 34 distribute
- the stacked body 26 is formed by a plurality of first substrates 38, a plurality of second substrates 40, and a pair of end plates 42.
- the first substrate 38 and the second substrate 40 are alternately and repeatedly stacked, and a pair of end plates 42 are separately stacked at both ends in the stacking direction to form the stacked body 26.
- the second substrate 40 is stacked on both sides of the first substrate 38 in the thickness direction.
- a plurality of first flow paths 32 are arranged on each first substrate 38.
- a plurality of second flow paths 34 are arranged on each second substrate 40.
- Each of the substrates 38 and 40 is a thin flat plate made of, for example, stainless steel.
- the laminated substrates 38 and 40 are integrated by diffusion-bonding their plate surfaces that are in contact with each other.
- the first substrate 38 is an example of the first layer of the present invention.
- the second substrate 40 is an example of a second layer of the present invention.
- a plurality of first channel grooves 48 for forming a plurality of first channels 32 are formed on one plate surface (see FIG. 5) in the thickness direction of each first substrate 38.
- FIG. 5 the overall outer shape of the plurality of first flow path grooves 48 formed on the first substrate 38 is shown. That is, in FIG. 5, illustration of each of the first flow path grooves 48 is omitted, but actually, a plurality of first flow path grooves 48 are arranged in parallel in the outer shape shown in FIG. 5.
- the openings of the plurality of first flow channel grooves 48 formed on the one plate surface of the first substrate 38 are sealed with the second substrate 40 stacked on the plate surface.
- the plurality of first flow path grooves 48 having the openings sealed therein are arranged on one plate surface side of the first substrate 38 and a plurality of first flow paths 32 are formed along the one plate surface. ing.
- the first inlet of each first flow path 32 is located near one end in the longitudinal direction of the first substrate 38 (near the upper end of the laminate 26) and near one end in the width direction of the first substrate 38. 50 is formed.
- the first inlet 50 is a portion that receives hydrogen gas.
- the first inlet 50 is formed by a through hole that passes through each of the substrates 38 and 40 and one end plate 42 of the pair of end plates 42 at the same position in the thickness direction. Accordingly, the first inlet 50 is a hole that is continuous in the stacking direction of the substrates 38 and 40 and is open on the front surface of the one end plate 42.
- the plurality of first flow paths 32 formed on each first substrate 38 are all connected to the first inlet 50. That is, the first inlet 50 serves as an inlet for hydrogen gas common to all the first flow paths 32 provided in the stacked body 26.
- a first outlet 52 of each first flow path 32 is formed at a position near the end portion on the opposite side of the first inlet 50 in the longitudinal direction and the width direction of the first substrate 38 in the stacked body 26.
- the first outlet 52 is a portion for discharging the hydrogen gas that has flowed through each first flow path 32. Similar to the first inlet 50, the first outlet 52 is formed by a through hole that passes through the substrates 38 and 40 and the one end plate 42 at the same position in the thickness direction. Further, like the first inlet 50, the first outlet 52 is a hydrogen gas discharge port common to all the first flow paths 32 provided in the stacked body 26.
- the first flow path 32 is a portion extending linearly from one side to the other side in the width direction of the first substrate 38 between the first inlet 50 and the first outlet 52, and is folded back from that portion to the first substrate 38.
- 38 has a meandering shape in which a portion extending linearly from the other side to the one side in the width direction is repeatedly provided.
- a plurality of second channel grooves 54 for forming a plurality of second channels 34 are formed on one plate surface (see FIG. 6) in the thickness direction of each second substrate 40.
- the openings of the plurality of second flow channel grooves 54 formed on the one plate surface of the second substrate 40 are sealed with the first substrate 38 stacked on the plate surface.
- the plurality of second channel grooves 54 with the openings sealed form a plurality of second channels 34 arranged on one plate surface side of the second substrate 40 and along the one plate surface. ing.
- the plurality of second flow paths 34 formed on each second substrate 40 is divided into two systems.
- the plurality of second flow paths 34 includes one group of second flow paths 34 disposed on the one side in the width direction from the center in the width direction of the second substrate 40, and the second substrate 40.
- the second channel 34 of the other group disposed on the other side in the width direction from the center in the width direction.
- the second flow path 34 of the one group is folded back from the portion extending linearly from the center side in the width direction of the second substrate 40 to the edge side on the one side in the width direction of the second substrate 40.
- the second substrate 40 has a meandering shape in which a portion extending linearly toward the center in the width direction is repeatedly provided.
- the second flow path 34 of the other group has a meandering shape that is symmetrical with respect to the center of the second flow path 34 of the one group and the second substrate 40 in the width direction.
- each second flow path 34 formed in the second substrate 40 is disposed on one end surface in the longitudinal direction of the laminate 26 along the longitudinal direction of the second substrate 40, specifically, the first outlet 52 is disposed.
- An opening is formed at the end face of the formed side.
- An opening at one end of each of the second flow paths 34 serves as a second inlet 34a for receiving brine.
- the second inlet 34a is an example of the inlet of the second flow path according to the present invention.
- the end of each second flow path 34 formed on the second substrate 40 on the side opposite to the second inlet 34a is the end surface on the other side in the longitudinal direction of the stacked body 26 along the longitudinal direction of the second substrate 40, specifically Is open at the end face on the side where the first inlet 50 is disposed.
- the opening at the opposite end of each of the second flow paths 34 is a second outlet 34b that discharges the brine that has flowed through each of the second flow paths 34.
- the 2nd exit 34b is an example of the exit of the 2nd channel
- the stacked body 26 configured as described above, formation of a portion extending linearly in the width direction of the first substrate 38 among the plurality of first flow paths 32 arranged on one plate surface side of the first substrate 38.
- the region and the formation region of a portion extending linearly in the width direction of the second substrate 40 among the plurality of second flow paths 34 arranged on one plate surface side of the second substrate 40 are defined as the regions of the substrates 38 and 40. They overlap and match each other when viewed from the stacking direction.
- the heat exchanger 10 (laminated body 26) includes the first inlet 50 and the second outlet 34b located on the upper side, the first outlet 52 and the second inlet 34a located on the lower side, and the laminated body 26.
- a longitudinal direction (longitudinal direction of each board
- the hydrogen gas flowing to the first outlet 52 side through the path 32 is generally arranged so as to move from the upper side to the lower side in the vertical direction orthogonal to the stacking direction of the first substrate 38 and the second substrate 40.
- the second inlet 34a and the second outlet 34b of each second flow path 34 are introduced from the second inlet 34a to each second flow path 34 and flow through each second flow path 34 toward the second outlet 34b.
- the brine is generally arranged so as to move from the lower side to the upper side in the vertical direction.
- the supply header 28 is attached to the end face of the laminate 26 where the second inlet 34a is formed.
- a pipe 20 (see FIG. 1) is connected to the supply header 28.
- the brine sent from the first pump 6 is supplied to the supply header 28 through the pipe 20.
- an internal space through which the supplied brine passes is provided in the supply header 28 in the supply header 28, an internal space through which the supplied brine passes is provided. This internal space communicates with the second inlets 34 a of all the second flow paths 34 provided in the laminated body 26 in a state where the supply header 28 is attached to the laminated body 26. That is, the brine supplied to the supply header 28 is distributed and introduced from the internal space of the supply header 28 to the second inlets 34 a of the second flow paths 34.
- the discharge header 30 is attached to the end surface of the laminate 26 where the second outlet 34b is formed.
- a pipe 22 (see FIG. 1) is connected to the discharge header 30.
- An interior space is provided in the discharge header 30. This internal space communicates with the second outlets 34 b of all the second flow paths 34 provided in the stacked body 26 in a state where the discharge header 30 is attached to the stacked body 26.
- the brine that has flowed through each second flow path 34 flows out from the second outlet 34b of each of the second flow paths 34 to the internal space of the discharge header 30, and is discharged from the internal space to the pipe 22. .
- the heat exchanger 10 of the cooling system according to the present embodiment is configured so that the shape, size and number of the flow paths 32 and 34 and the substrates 38 and 40 constituting the stacked body 26 are satisfied so as to satisfy the relationship of the following expression (1).
- the structure such as the number of layers is designed.
- the amount of heat exchange required for the heat exchanger 10 is Q (kW)
- the overall heat transfer coefficient that is a value resulting from the form of the heat exchanger 10 is U (kW / m 2 ⁇ ° C.
- the heat transfer area in the heat exchanger 10 is A (m 2 ), the brine temperature at the second inlet 34a of the second flow path 34 and the brine temperature at the second outlet 34b of the second flow path 34
- the logarithmic average temperature of the brine in the second flow path 34 obtained from the temperature is dT (° C.).
- the second inlet temperature detector 60 (see FIGS. 1 and 2) is connected to the supply header 28.
- the second inlet temperature detector 60 is a detector that detects the temperature of the brine introduced into the second inlet 34 a of the second flow path 34. That is, the second inlet temperature detection unit 60 detects the temperature of the brine at the second inlet 34a.
- the second outlet temperature detector 62 (see FIGS. 1 and 2) is connected to the discharge header 30.
- the second outlet temperature detector 62 is a detector that detects the temperature of the brine discharged from the second outlet 34 b of the second flow path 34. In other words, the second outlet temperature detector 62 detects the temperature of the brine at the second outlet 34b.
- the first outlet temperature detector 64 (see FIGS. 1 and 2) is connected to the first outlet 52 of the first flow path 32.
- the first outlet temperature detector 64 is a detector that detects the temperature of the hydrogen gas discharged from the first outlet 52. That is, the first outlet temperature detection unit 64 detects the temperature of the hydrogen gas at the first outlet 52.
- the second inlet temperature detector 60, the second outlet temperature detector 62, and the first outlet temperature detector 64 are each configured to transmit detected temperature data to the controller 58.
- the controller 58 controls the temperature of the brine flowing through each second flow path 34.
- the control unit 58 controls the operation of the refrigerator 2 and the flow rate of the brine sent from the first pump 6 based on the received data of each detected temperature, and thereby the brine flowing through each second flow path 34. To control the temperature.
- the control unit 58 controls the operation of the refrigerator 2 so that the temperature of the brine at the second outlet 34b is higher than the temperature of the hydrogen gas at the first outlet 52, and also controls the brine sent from the first pump 6. Control the flow rate.
- the above cooling system is prepared.
- the refrigerator 2 (see FIG. 1) cools the brine by exchanging heat with the low-temperature refrigerant.
- the cooled brine is sent from the discharge portion 2b to the first storage chamber 12 of the tank 4 through the pipe 18.
- the brine introduced into the first storage chamber 12 is temporarily stored in the first storage chamber 12 and discharged to the pipe 20 by the suction force of the first pump 6.
- the brine discharged to the pipe 20 is sent to the heat exchanger 10 by the first pump 6, and each second flow path 34 (see FIG. 2) in the stacked body 26 through the internal space of the supply header 28 (see FIGS. 2 and 3). 6)) from their second inlet 34a.
- the controller 58 Based on the detected temperature data received from the second inlet temperature detector 60, the controller 58 operates the refrigerator 2 that cools the brine so that the temperature of the brine at the second inlet 34a becomes ⁇ 40 ° C. (Cooling power) is controlled. Specifically, the control unit 58 controls the cooling power of the refrigerator 2 by causing the refrigerator 2 to adjust the temperature of the refrigerant so that the temperature detected by the second inlet temperature detection unit 60 becomes ⁇ 40 ° C. Specifically, when the temperature detected by the second inlet temperature detector 60 is higher than ⁇ 40 ° C., the controller 58 sends a control signal instructing the refrigerator 2 to increase the cooling power and receives the control signal. The refrigerating machine 2 increases the cooling power according to the control signal.
- the temperature of the brine at the second inlet 34a detected by the second inlet temperature detector 60 decreases so as to approach ⁇ 40 ° C.
- the controller 58 sends a control signal instructing the refrigerator 2 to reduce the cooling power and receives the control signal.
- the refrigerator 2 reduces the cooling power according to the control signal.
- the temperature of the brine at the second inlet 34a detected by the second inlet temperature detector 60 increases so as to approach ⁇ 40 ° C.
- the brine introduced into each second flow path 34 flows through the second flow path 34 from the second inlet 34a toward the second outlet 34b.
- the brine flowing through each of the second flow paths 34 generally moves from the lower side to the upper side in the vertical direction perpendicular to the stacking direction of the substrates 38 and 40 of the stacked body 26.
- the compressor 100 (see FIG. 1), hydrogen gas is compressed.
- the compressed high-pressure hydrogen gas is introduced from the compressor 100 into the first inlet 50 of the heat exchanger 10.
- the hydrogen gas introduced into the first inlet 50 is cooled by cooling water after being compressed by the compressor 100, and the temperature thereof is 40 ° C.
- the hydrogen gas introduced into the first inlet 50 is distributed and supplied to the first flow paths 32 (see FIG. 5) in the stacked body 26.
- the hydrogen gas supplied to each first flow path 32 flows through the first flow path 32 from the first inlet 50 side toward the first outlet 52 side, and generally from the upper side to the lower side in the vertical direction. Move towards. In this process, a stack is formed between hydrogen gas flowing through each first flow path 32 (see FIG.
- the brine gradually increases in temperature as it flows to the downstream side (second outlet 34b side) of each second flow path 34.
- the degree of temperature rise of the brine at this time varies depending on the temperature and flow rate of the brine introduced into the second flow path 34.
- the controller 58 determines that the brine temperature at the second outlet 34b is higher than the hydrogen gas temperature ( ⁇ 37 ° C.) at the first outlet 52 and the brine at the second outlet 34b.
- the flow rate of brine to be introduced into each second flow path 34 that is, the flow rate of brine sent from the first pump 6 is set so that the temperature is 10 ° C. or more higher than the temperature of brine ( ⁇ 40 ° C.) at the second inlet 34a.
- Control Specifically, the control unit 58 controls the flow rate of the brine sent from the first pump 6 so that the brine temperature at the second outlet 34b becomes ⁇ 30 ° C.
- the controller 58 receives the detected temperature data received from the first outlet temperature detector 64, the detected temperature data received from the second inlet temperature detector 60, and the second outlet temperature detector 62. Based on the detected temperature data, the brine flow rate of the first pump 6 is controlled.
- the control unit 58 compares the detected temperature of the first outlet temperature detecting unit 64 with the detected temperature of the second outlet temperature detecting unit 62, and the detected temperature of the second outlet temperature detecting unit 62 is the first outlet.
- the brine flow rate is supplied to the first pump 6 until the temperature detected by the second outlet temperature detector 62 becomes higher than the temperature detected by the first outlet temperature detector 64. Decrease.
- the control unit 58 sends a control signal instructing a decrease in the delivery flow rate to the first pump 6, and the first pump 6 reduces the delivery flow rate of the brine according to the received control signal.
- control unit 58 detects that the detected temperature of the second outlet temperature detecting unit 62 is higher than the detected temperature of the second inlet temperature detecting unit 60, and detects the detected temperature of the second outlet temperature detecting unit 62 and the second inlet temperature detection.
- the control unit 58 sends the control signal instructing the first pump 6 to reduce the delivery flow rate, thereby reducing the brine delivery flow rate to the first pump 6.
- the control unit 58 controls the brine flow rate of the first pump 6 so that the temperature detected by the second outlet temperature detection unit 62 becomes ⁇ 30 ° C. That is, when the temperature detected by the second outlet temperature detection unit 62 is lower than ⁇ 30 ° C., the control unit 58 sends a control signal instructing a decrease in the delivery flow rate to the first pump 6, and the first pump 6 The brine flow rate is decreased in accordance with the received control signal. In addition, when the temperature detected by the second outlet temperature detection unit 62 is higher than ⁇ 30 ° C., the control unit 58 sends a control signal instructing an increase in the delivery flow rate to the first pump 6, and the first pump 6 The brine flow rate is increased in response to the received control signal.
- the cooled hydrogen gas is discharged through the first outlet 52 (see FIGS. 2 and 5) of each first flow path 32 and supplied to the fuel cell vehicle 90 (see FIG. 1).
- the brine after the heat exchange is discharged from the second outlet 34 b of each second flow path 34 to the pipe 22 (see FIG. 1) through the internal space of the discharge header 30, and the second of the tank 4 through the pipe 22. It is introduced into the storage chamber 14 and stored.
- the brine after heat exchange stored in the second storage chamber 14 is sucked through the pipe 24 by the second pump 8 and sent to the refrigerator 2, and is introduced into the refrigerator 2 from the introduction part 2 a.
- the brine after heat exchange introduced into the refrigerator 2 is cooled again and supplied from the refrigerator 2 to the heat exchanger 10.
- the hydrogen gas cooling method according to the present embodiment is implemented.
- the temperature of the hydrogen gas flowing through the first flow path 32 decreases as it goes downstream, and the temperature of the brine flowing through the second flow path 34 increases as it goes downstream, that is, toward the first inlet 50 of the first flow path 32.
- the hydrogen gas flowing through each first flow path 32 moves from the upper side to the lower side as a whole, and the brine flowing through each second flow path 34 moves from the lower side to the upper side as a whole. Therefore, the hydrogen gas can exchange heat with the colder brine on the upstream side of the second flow path 34 as it flows downstream of the first flow path 32. For this reason, the cooling efficiency of hydrogen gas can be improved more.
- each second flow path is such that the temperature of the brine at the second outlet 34 b of the second flow path 34 is higher than the temperature of the hydrogen gas at the first outlet 52 of the first flow path 32.
- 34 controls the temperature and flow rate of the brine introduced. For this reason, compared with the case where the temperature of the brine in the 2nd exit 34b of the 2nd flow path 34 becomes below the temperature of the hydrogen gas in the 1st exit 52 of the 1st flow path 32, it is hydrogen from brine with the heat exchanger 10.
- the cold heat per brine flow rate (unit volume) given to the gas increases, and the hydrogen gas can be cooled more effectively.
- the cooling efficiency of hydrogen gas can be increased, even if the amount of brine used is reduced, the hydrogen gas can be sufficiently supplied even if the brine is not excessively cooled to a low temperature. Can be cooled to.
- first flow paths 32 that are microchannels and a large number of second flow paths 34 that are microchannels can be integrated in the stacked body 26 of the heat exchanger 10. For this reason, it is possible to secure a sufficient amount of cooling treatment of the hydrogen gas while reducing the size of the heat exchanger 10.
- the amount of brine used for cooling the hydrogen gas is reduced, and the cooling of the brine is performed by the refrigerator 2.
- Increase in energy required for cooling energy required for cooling the refrigerant
- hydrogen gas can be sufficiently cooled.
- the energy required for driving the first pump 6 and the second pump 8 for circulating the brine between the refrigerator 2 and the heat exchanger 10 can be reduced by reducing the amount of brine used. can do.
- each first flow path 32 and each second flow path 34 are formed in a meandering shape. For this reason, for example, the number of the flow paths 32 and 34 provided for each of the substrates 38 and 40 is reduced as compared with the case where the flow paths are formed in a straight line, but the flow paths 32 and 34 are not provided. The length can be increased. As a result, the heat transfer area of the first flow path 32 and the second flow path 34 in the stacked body 26 can be sufficiently secured. Further, since the number of the flow paths 32 and 34 provided for each of the substrates 38 and 40 is reduced, each flow path 32 even when the total flow rate of the fluid flowing through the flow paths 32 and 34 is the same. , 34 can be increased in flow rate.
- the flow rate of the hydrogen gas flowing through each first flow path 32 and each second flow path 34 are ensured while ensuring a sufficient heat transfer area between the first flow path 32 and the second flow path 34.
- the flow rate of the brine can be increased to improve the heat transfer performance between the hydrogen gas and the brine. For this reason, hydrogen gas can be cooled more effectively.
- the temperature of the brine at the second outlet 34b of the second flow path 34 is 10 ° C. or more higher than the temperature of the brine at the second inlet 34a of the second flow path 34.
- the flow rate of the brine introduced into the two flow paths 34 is controlled. For this reason, in the heat exchanger 10, the cold heat given to the hydrogen gas which flows into the 1st flow path 32 from the brine which flows through the 2nd flow path 34 can be enlarged enough. As a result, the cooling efficiency of hydrogen gas can be further increased.
- the temperature of the brine introduced into each second flow path 34 is controlled so that the temperature of the brine at the second inlet 34a of the second flow path 34 becomes ⁇ 40 ° C. For this reason, it is possible to sufficiently cool the hydrogen gas while suppressing hydrogen embrittlement of the stacked body 26 of the heat exchanger 10.
- stainless steel which is the material of each of the substrates 38 and 40 constituting the laminated body 26, may be significantly hydrogen embrittled if it is in contact with hydrogen gas in a state cooled to a temperature lower than ⁇ 40 ° C. are known.
- the stacked body 26 becomes ⁇ 40 The temperature becomes not lower than ° C., and hydrogen embrittlement can be suppressed. Then, by introducing brine at ⁇ 40 ° C. into the second inlet 34a, the hydrogen gas flowing through the first flow path 32 can be sufficiently cooled while suppressing hydrogen embrittlement of the stacked body 26.
- first flow path and the second flow path are not limited to those having a meandering shape that repeats folding as described above, and may be, for example, linearly extending.
- first flow paths formed on one first substrate and the number of second flow paths formed on one second substrate can be freely set. Further, the width and cross-sectional shape of each first flow path and the width and cross-sectional shape of each second flow path can also be set freely.
- the first substrate on which the first flow paths are arranged and the second substrate on which the second flow paths are arranged are alternately laminated, but the form of lamination is not limited to this.
- two or more second substrates in which second flow paths for circulating brine are arranged may be stacked on one first substrate in which first flow paths for flowing hydrogen gas are arranged. .
- the orientation of the heat exchanger is not limited to the orientation in which the longitudinal direction of the substrate coincides with the vertical direction as described above.
- the heat exchanger (laminated body) may be arranged in a direction in which the longitudinal direction of the substrate coincides with the horizontal direction or in an oblique direction.
- the method for cooling hydrogen gas is a method for cooling hydrogen gas using brine, which is a non-evaporable antifreeze, and is a first layer in which a plurality of first flow paths that are fine flow paths are arranged. And a preparation step of preparing a heat exchanger comprising a laminate in which a plurality of second flow paths, which are fine flow paths, are arranged, and hydrogen gas is circulated through the first flow paths.
- the hydrogen gas is cooled by circulating a brine having a temperature lower than that of hydrogen gas through each of the second flow paths and exchanging heat between the hydrogen gas flowing through the first flow path and the brine flowing through the second flow path.
- each first flow path moves from one side to the other side in a specific direction orthogonal to the stacking direction of the first layer and the second layer. So that hydrogen gas flows through each of the first flow paths.
- the brine flows through each of the second channels so that the brine flowing through each of the second channels moves from the other side toward the one side in the specific direction, and the brine at the outlet of the second channel.
- the temperature and flow rate of the brine introduced into each second flow path are controlled so that the temperature of the water becomes higher than the temperature of the hydrogen gas at the outlet of the first flow path.
- the temperature of the hydrogen gas flowing through the first flow path decreases as it goes downstream, and the temperature of the brine flowing through the second flow path increases as it goes downstream, that is, toward the hydrogen gas inlet side of the first flow path.
- the hydrogen gas flowing through each first flow path moves from one side to the other side in a specific direction orthogonal to the stacking direction of each layer of the laminate, and flows through each second flow path. Introduce hydrogen gas into each first flow path and introduce brine into each second flow path so that moves from the other side toward the one side. Therefore, the hydrogen gas can exchange heat with the colder brine on the upstream side of the second flow path as it flows through the first flow path to the downstream side. For this reason, the cooling efficiency of hydrogen gas can be improved more.
- the cooling efficiency of hydrogen gas can be increased. Therefore, even if the amount of brine used is reduced or the brine is not cooled to an excessively low temperature, sufficient hydrogen gas can be obtained. Can be cooled to.
- a plurality of first flow paths that are fine flow paths and a plurality of second flow paths that are fine flow paths can be integrated in the stack of heat exchangers. For this reason, it is possible to secure a sufficient amount of hydrogen gas cooling while reducing the size of the heat exchanger. Therefore, in this cooling method, while reducing the size of the heat exchanger and ensuring the amount of hydrogen gas cooling, the amount of brine used for cooling the hydrogen gas is reduced and the energy required for cooling the brine is increased. The hydrogen gas can be sufficiently cooled.
- a laminated body formed inside in the meandering shape of the first flow paths and the second flow paths is used as the laminated body.
- a heat exchanger is provided, and in the cooling step, hydrogen gas is circulated to each first flow path along the meandering shape of each first flow path, and brine is meandered to each second flow path. It is preferable to distribute the second flow paths along the shape.
- the length of each flow path can be increased although the number of flow paths provided per layer is reduced as compared with the case where the flow paths are formed linearly. For this reason, the heat transfer area of the 1st flow path and 2nd flow path in a laminated body is fully securable. Further, since the number of flow paths provided per layer is reduced, the flow velocity of the fluid flowing through each flow path can be increased even when the total flow rate of the fluid flowing through these flow paths is the same. Generally, when the flow velocity of the fluid flowing through the flow path increases, the fluid turbulence in the flow path increases, and as a result, the heat transfer performance improves.
- the temperature of the brine at the outlet of the second flow path is 10 ° C. higher than the temperature of the brine at the inlet of the second flow path. It is preferable to control the flow rate of the brine introduced into the two flow paths.
- the brine to each second flow path that can sufficiently increase the cold heat given from the brine flowing through the second flow path to the hydrogen gas flowing through the first flow path in the stack of heat exchangers.
- the specific conditions of the introduction flow rate can be set.
- the temperature of the brine introduced into each second flow path may be controlled so that the temperature of the brine at the inlet of the second flow path is ⁇ 40 ° C. preferable.
- the hydrogen gas cooling system is a cooling system that cools hydrogen gas using brine, which is a non-evaporable antifreeze, and the brine is cooled between the refrigerator that cools the brine and the refrigerator.
- a heat exchanger that is connected to the refrigerator so as to circulate and cools the hydrogen gas by heat exchange with the brine supplied from the refrigerator, and the brine cooled by the refrigerator is the refrigerator And a controller that controls the temperature of the brine.
- the heat exchanger has a plurality of first flow paths arranged as fine flow paths through which hydrogen gas is introduced.
- a hydrogen gas flowing through the first flow path having a laminated body in which the first layer and a second layer in which a plurality of second flow paths are arranged, which are fine flow paths that flow through the introduction of brine, are stacked. And flow through the second flow path Heat exchange is performed with brine, and each of the first flow paths has a first inlet for receiving hydrogen gas and a first outlet for discharging hydrogen gas, and the first inlet and the first outlet are Hydrogen gas introduced from the first inlet into the first flow path and flowing through the first flow path toward the first outlet side from one side in a specific direction orthogonal to the stacking direction of the first layer and the second layer.
- the second flow paths are arranged to move toward the other side, and each of the second flow paths has a second inlet for receiving brine and a second outlet for discharging the brine, and the second inlet and the second outlet are:
- the brine introduced from the second inlet to the second flow path and flowing through the second flow path to the second outlet side is arranged to move from the other side toward the one side in the specific direction,
- the controller is configured so that the brine temperature at the second outlet is To be higher than the temperature of the hydrogen gas in the first outlet, it is preferable to control the flow rate of the brine in which the pump is sent along with controlling the operation of the refrigerator.
- the amount of brine used for cooling the hydrogen gas while at the same time reducing the size of the heat exchanger and securing the cooling processing amount of the hydrogen gas. , The increase in energy required for cooling the brine can be suppressed, and the hydrogen gas can be sufficiently cooled.
- the hydrogen gas cooling system further includes a first outlet temperature detector that detects the temperature of the hydrogen gas at the first outlet, and a second outlet temperature detector that detects the temperature of the brine at the second outlet.
- the control unit controls the flow rate of the brine delivered by the pump based on the temperature detected by the first outlet temperature detection unit and the temperature detected by the second outlet temperature detection unit. preferable.
- each of the first flow paths and each of the second flow paths is formed in the laminated body in a meandering shape.
- the length of each flow path can be increased, although the number of flow paths provided per layer is reduced as compared with the case where the flow paths are formed in a straight line, for example.
- the heat transfer area of the first flow path and the second flow path can be sufficiently secured.
- the number of flow paths provided per layer is reduced, the flow velocity of the fluid flowing through each flow path can be increased even when the total flow rate of the fluid flowing through these flow paths is the same.
- the fluid disturbance in the flow path increases, and as a result, the heat transfer performance improves.
- control unit causes the brine to pass through each of the second flow paths at a flow rate at which the brine temperature at the second outlet is 10 ° C. or more higher than the brine temperature at the second inlet. It is preferable to let the pump deliver brine so that it flows.
- the flow rate of the brine in the pump capable of sufficiently increasing the cold heat given from the brine flowing through the second flow path to the hydrogen gas flowing through the first flow path in the stack of heat exchangers Can be set automatically.
- control unit preferably controls the cooling power of the refrigerator so that the temperature of the brine at the inlet of the second flow path becomes ⁇ 40 ° C.
- the cooling temperature of the brine in the refrigerator capable of effectively cooling the hydrogen gas can be specifically set while suppressing the hydrogen embrittlement of the stacked body of the heat exchanger.
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Abstract
Description
前記実施形態をまとめると、以下の通りである。
Claims (7)
- 非蒸発性の不凍液であるブラインを用いて水素ガスを冷却する方法であって、
微細流路である複数の第1流路が配列された第1層と微細流路である複数の第2流路が配列された第2層とが積層された積層体を備える熱交換器を用意する用意工程と、
前記各第1流路に水素ガスを流通させるとともに前記各第2流路に水素ガスよりも低温のブラインを流通させて前記第1流路を流れる水素ガスと前記第2流路を流れるブラインとの間で熱交換させることにより水素ガスを冷却する冷却工程とを備え、
前記冷却工程では、前記各第1流路を流れる水素ガスが前記第1層及び前記第2層の積層方向に直交する特定方向において一方側から他方側へ向かって移動するように前記各第1流路に水素ガスを流すとともに前記各第2流路を流れるブラインが前記特定方向において前記他方側から前記一方側へ向かって移動するように前記各第2流路にブラインを流し、前記第2流路の出口でのブラインの温度が前記第1流路の出口での水素ガスの温度よりも高くなるように前記各第2流路に導入するブラインの温度及び流量を制御する、水素ガスの冷却方法。 - 請求項1に記載の水素ガスの冷却方法において、
前記用意工程では、前記熱交換器として、前記各第1流路と前記各第2流路がそれぞれ蛇行した形状で内部に形成された積層体を前記積層体として備える熱交換器を用意し、
前記冷却工程では、水素ガスを前記各第1流路の蛇行した形状に沿ってその各第1流路に流通させ、ブラインを前記各第2流路の蛇行した形状に沿ってその各第2流路に流通させる、水素ガスの冷却方法。 - 請求項1に記載の水素ガスの冷却方法において、
前記冷却工程では、前記第2流路の出口でのブラインの温度がその第2流路の入口でのブラインの温度よりも10℃以上高くなるように前記各第2流路に導入するブラインの流量を制御する、水素ガスの冷却方法。 - 非蒸発性の不凍液であるブラインを用いて水素ガスを冷却する冷却システムであって、
ブラインを冷却する冷凍機と、
前記冷凍機との間でブラインが循環するように前記冷凍機に接続され、水素ガスを前記冷凍機から供給されたブラインとの間で熱交換させることにより冷却する熱交換器と、
前記冷凍機で冷却されたブラインを前記冷凍機から前記熱交換器へ送るポンプと、
ブラインの温度を制御する制御部とを備え、
前記熱交換器は、水素ガスが導入されて流れる微細流路である複数の第1流路が配列された第1層とブラインが導入されて流れる微細流路である複数の第2流路が配列された第2層とが積層された積層体を有していて、前記第1流路を流れる水素ガスと前記第2流路を流れるブラインとの間で熱交換させ、
前記各第1流路は、水素ガスを受け入れる第1入口と水素ガスを排出する第1出口とを有し、前記第1入口と前記第1出口は、前記第1入口から前記第1流路に導入されて当該第1流路を前記第1出口側へ流れる水素ガスが前記第1層及び前記第2層の積層方向に直交する特定方向において一方側から他方側へ向かって移動するように配置され、
前記各第2流路は、ブラインを受け入れる第2入口とブラインを排出する第2出口とを有し、前記第2入口と前記第2出口は、前記第2入口から前記第2流路に導入されて当該第2流路を前記第2出口側へ流れるブラインが前記特定方向において前記他方側から前記一方側へ向かって移動するように配置され、
前記制御部は、前記第2出口でのブラインの温度が前記第1出口での水素ガスの温度よりも高くなるように、前記冷凍機の作動を制御するとともに前記ポンプが送出するブラインの流量を制御する、水素ガスの冷却システム。 - 請求項4に記載の水素ガスの冷却システムにおいて、
前記第1出口での水素ガスの温度を検出する第1出口温度検出部と、
前記第2出口でのブラインの温度を検出する第2出口温度検出部とをさらに備え、
前記制御部は、前記第1出口温度検出部によって検出された温度と前記第2出口温度検出部によって検出された温度とに基づいて、前記ポンプが送出するブラインの流量を制御する、水素ガスの冷却システム。 - 請求項4に記載の水素ガスの冷却システムにおいて、
前記各第1流路と前記各第2流路は、それぞれ蛇行した形状で前記積層体内に形成されている、水素ガスの冷却システム。 - 請求項4に記載の水素ガスの冷却システムにおいて、
前記制御部は、前記第2出口でのブラインの温度が前記第2入口でのブラインの温度よりも10℃以上高くなる流量でブラインが前記各第2流路を流れるように前記ポンプにブラインを送出させる、水素ガスの冷却システム。
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KR102271875B1 (ko) | 2019-08-23 | 2021-07-01 | 한국가스공사 | 수소 충전용 냉각 장치 및 이를 이용한 수소 자동차 충전 방법 |
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DE102020101528A1 (de) | 2020-01-23 | 2021-07-29 | Audi Aktiengesellschaft | Brennstoffzellenvorrichtung und Kraftfahrzeug mit einer Brennstoffzellenvorrichtung |
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Also Published As
Publication number | Publication date |
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JP2015031420A (ja) | 2015-02-16 |
KR20160025589A (ko) | 2016-03-08 |
US20160131434A1 (en) | 2016-05-12 |
EP3029406A1 (en) | 2016-06-08 |
EP3029406A4 (en) | 2017-04-12 |
EP3029406B1 (en) | 2018-02-21 |
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