CN101828292B - Heat recovery apparatus of fuel cell system - Google Patents
Heat recovery apparatus of fuel cell system Download PDFInfo
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- CN101828292B CN101828292B CN200880112573.6A CN200880112573A CN101828292B CN 101828292 B CN101828292 B CN 101828292B CN 200880112573 A CN200880112573 A CN 200880112573A CN 101828292 B CN101828292 B CN 101828292B
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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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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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
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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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- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/006—Heat storage systems not otherwise provided for
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/40—Combination of fuel cells with other energy production systems
- H01M2250/405—Cogeneration of heat or hot water
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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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
- Y02E60/14—Thermal energy 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
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- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel Cell (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to a heat recovery apparatus of a fuel cell system that supplies heat generated from various electric power generation elements including a fuel cell stack to hot water or to heating circulating water by effectively recovering the heat. A heat recovery apparatus of a fuel cell system includes: a first heat exchanger that recovers waste heat generated from a fuel cell stack; a second heat exchanger installed independently from the first heat exchanger, which recovers waste heat generated from a fuel treatment device or system pipes; and a heat storage tank supplying a heat exchange material to the first heat exchanger and the second heat exchanger and recovers the heat exchange material to supply waste heat included in the heat exchange material to the outside in accordance with an external heat demand.
Description
Technical field
The present invention relates to the fuel cell system that a kind of electrochemical reaction by hydrogen and oxygen produces electric energy, and relate more specifically to a kind of heat recovery equipment of fuel cell system, its by effectively reclaiming heat to hot water or circulation water for heating supply the heat from comprising that the various generating elements of fuel cell unit produce.
Background technology
Fuel cell is a kind of generating equipment that produces electric energy by the oxidation reaction of hydrogen and the reduction reaction of oxygen.Fuel cell is divided into the type such as polymer dielectric film fuel cell and direct methanol fuel cell.
Polymer dielectric film fuel cell is a kind of use polymer film with hydrogen ion commutativity as electrolytical fuel cell and by by means of hydrogen-containing fuel with cause electrochemical reaction containing oxygen air and produce electric energy.Use the fuel cell system of polymer electrolyte fuel cells to there is following schematic structure.
That is to say, as building block, fuel cell system can comprise for generation of the fuel cell power plant of electric energy and for be supplied to the heat recovery equipment in the place that needs heat by reclaiming used heat used heat that fuel cell power plant is produced.
Fuel cell power plant comprises: fuel cell unit, and it produces direct current (DC) electricity for the electrochemical reaction by hydrogen and oxygen; Reformer, it is for being rich in the reformed gas of hydrogen by reformation alkyl electricity generation material as liquefied natural gas (LNG) or liquefied petroleum gas (LPG) to fuel cell unit supply; Air supply device, it is for supplying fuel cell unit required oxygen; Power converter, the DC electricity that it produces fuel cell unit is transformed into interchange (AC) electricity; And various BOP (auxiliary equipment) and controller, it is for starting and stop building block and keeping generating required.
Referring to disclosed information in Korean Patent No.0418459 and No.0740542, the heat recovery equipment of fuel cell system has following schematic configuration.That is to say, comprise heat storage can (tank) for storing the used heat reclaiming from fuel cell power plant and for be stored in the device of the used heat of heat storage can to hot water or circulation water for heating supply according to the heat recovery equipment of the fuel cell system of correlation technique.
Particularly, the heat recovery equipment of this fuel cell system is configured in order to reclaim various system building blocks from fuel cell power plant as used heat that fuel cell unit and fuel treating equipment produced.Now, in this fuel cell power plant, fuel cell unit should remain on predetermined temperature in order to more stably to produce electric energy, and it is unbalance to prevent heat to carry out effective recuperation of heat to fuel treating equipment.That is to say, preferably according to each heat generation amount, building block is carried out to recuperation of heat as fuel cell unit and fuel treating equipment.
But, owing to reclaiming heat through the building block of fuel cell power plant during as fuel cell unit and fuel treating equipment according to the heat recovery equipment of the fuel cell system of correlation technique in an orderly manner in heat, therefore be difficult to suitably each building block be carried out to heat exchange.As a result, depend on the circumstances, cause the generating efficiency of fuel cell system and durability due to the non-uniform temperature of fuel cell unit or the heat of fuel treating equipment is unbalance worsens according to the heat recovery equipment of the fuel cell system of correlation technique.
Summary of the invention
Technical problem
The present invention is intended to solve the problems referred to above of routine techniques.According to one exemplary embodiment of the present invention, an object of the present invention is to provide a kind of heat recovery equipment of fuel cell system, it can reclaim the used heat producing from the building block of fuel cell system effectively by independent recovery used heat, and is not subject to the variation of surrounding environment of fuel cell system and the impact of the variation of heat storage can internal temperature.
According to another exemplary embodiment of the present invention, another object of the present invention is to provide a kind of heat recovery equipment of fuel cell system, and it improves the utilance of the used heat in heat storage can by the recuperation of heat loop structure in enhancing heat storage can and discharge structure.
Technical scheme
According to one exemplary embodiment of the present invention, the heat recovery equipment of fuel cell system comprises: the first heat exchanger, and it reclaims the used heat producing from fuel cell unit; Be independent of the second heat exchanger that the first heat exchanger is installed, it reclaims the used heat producing from fuel treating equipment or system pipeline; And heat storage can, it supplies heat exchange material to the first heat exchanger and the second heat exchanger, and reclaims heat exchange material to be included in the used heat in heat exchange material according to external heat demand to outside supply.
First pipe passage connects from heat storage can, this first pipe passage was branched off into the second pipe passage and the 3rd pipe passage before the first heat exchanger and the second heat exchanger, and the second pipe passage and the 3rd pipe passage are connected on the first heat exchanger and the second heat exchanger.
The 4th pipe passage is connected on the first pipe passage and makes heat exchange material to link the first pipe passage via another path.Air-cooling type radiator is arranged in the 4th pipe passage, and is arranged on a part for the first pipe passage for changing selectively first triple valve of flow direction of heat exchange material, and this part is branched off into the 4th pipe passage.
Allow the first check-valves and the first pump that heat exchange material flows along a direction to be arranged in the second pipe passage.Allow the second check-valves and the second pump that heat exchange material flows along a direction to be arranged in the 3rd pipe passage.
Heat storage can receives heat exchange material from outside, heat exchange material is circulated in the first heat exchanger and the second heat exchanger, and store this heat exchange material as the material that contains used heat.
The first hot switching path is arranged in heat storage can, and the water being introduced in the first hot switching path converts hot water to and is fed to heat storage can outside by carrying out heat exchange with the material that contains used heat.
The second hot switching path is installed in heat storage can, and water in guiding the second hot switching path converts hot water to and is fed to heat storage can outside by carrying out heat exchange with the material that contains used heat.The heat recovery equipment of fuel cell system also comprises: the 3rd heat exchanger, and it carries out heat exchange with the hot water or the heat supply water that discharge from heat storage can; And first auxiliary burner, it produces heat with to the 3rd heat exchanger heat supply according to external control signal.
The heat recovery equipment of fuel cell system also comprises temperature-sensing valve, enters wherein and mixes mutually through guiding through the hot water of the 3rd heat exchanger with from the cold water of outside supply.This temperature-sensing valve is by utilizing temperature sensing executive component alloy to make the valve of the heat control valve type that hot water mixes mutually with cold water.
The heat recovery equipment of fuel cell system has pipeline structure, therein, is supplied to outside to be used for carrying out heat supply function and heat supply water is recovered to heat storage can again through the hot water of the 3rd heat exchanger.
The second triple valve is arranged on heat supply water and is recovered on the pipeline path of heat storage can through it, thereby allows by operating selectively the second triple valve, heat supply water is introduced in heat storage can or is fed to outside through bypass path.
The heat recovery equipment of fuel cell system also can comprise: the 4th heat exchanger, and it carries out heat exchange with the hot water discharging from heat storage can; And second auxiliary burner, its by producing heat according to external control signal to the 4th heat exchanger heat supply.The heat recovery equipment of fuel cell system also can comprise: the 5th heat exchanger, and it is independent of, and the 4th heat exchanger is installed and carry out heat exchange with the heat supply water discharging from heat storage can; And the 3rd auxiliary burner, it produces heat with to the 5th heat exchanger heat supply according to external control signal.
The level sensor that is used for the water level of measuring heat exchange material is arranged on heat storage can.Supply channel is connected on heat storage can to the water as heat exchange material is fed to heat storage can, and for being arranged on supply channel with the electromagnetically operated valve of the supply of the measurement data adjusted in concert water of level sensor.
Be reduced to the top that is arranged on heat storage can lower than the safety valve of the pressure of predetermined excess pressure condition for the internal pressure of heat storage can that heat exchange material is produced.
Be arranged on the bottom of heat storage can for as required heat exchange material being discharged into outside discharge valve.
Beneficial effect
In fuel cell system, heat generation amount depends on the variation (being generally the variation of environment temperature) of surrounding environment, and the starting of system, running and stopping process.Now, according in the heat recovery equipment of the fuel cell system of exemplary embodiment of the present invention, the used heat producing from fuel cell unit and being reclaimed independently as the used heat of the generations such as fuel treating equipment from other building block.That is to say, can reclaim independently heat corresponding to building block according to the heat recovery equipment of the fuel cell system of exemplary embodiment of the present invention, thereby improve heat recovery efficiency.
Therefore, eliminated heat between the inside building block of fuel cell system unbalance, and can stably generate electricity with the generating efficiency higher than correlation technique.Can improve used heat utilance by strengthening recuperation of heat in heat storage can and loop structure and hot driving structure according to the heat recovery equipment of the fuel cell system of exemplary embodiment of the present invention.
According to the heat recovery equipment of the fuel cell system of exemplary embodiment of the present invention compared with correlation technique, can be by using auxiliary thermal source machine that thermal source is additionally provided in the best condition to reduce fuel consumption and increase economic benefit as auxiliary burner.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the first exemplary embodiment of the present invention.
Fig. 2 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the second exemplary embodiment of the present invention.
Fig. 3 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 3rd exemplary embodiment of the present invention.
Fig. 4 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 4th exemplary embodiment of the present invention.
Fig. 5 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 5th exemplary embodiment of the present invention.
In < accompanying drawing, represent the description > of the reference number of main element
110,210,310,410,510: fuel cell unit
120,220,320,420,520: fuel treating equipment
130,230,330,430,530: heat storage can
140,240,340,440,540: the first heat exchangers
150,250,350,450,550: the second heat exchangers
160,260,360,460,560: air-cooling type radiator
170,270,370,470,570: auxiliary thermal source machine
Embodiment
Hereinafter, describe with reference to the accompanying drawings exemplary embodiment of the present invention in detail to carried out by those skilled in the art.As the skilled person will recognize, described embodiment can take various mode to be revised, and all these all do not depart from the spirit or scope of the present invention.
Fig. 1 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the first exemplary embodiment of the present invention.
As shown in Figure 1, the heat recovery equipment 100 of fuel cell system is by reclaiming individually the used heat that produces from fuel cell unit and storing the used heat being recovered in heat storage can 130 from other building block as the used heat that fuel treating equipment or system pipeline produced.
The heat producing from fuel cell system inside is divided into two types conventionally.That is to say, fuel cell unit 110 produces heat by the electrochemical reaction of hydrogen and oxygen and generates electricity simultaneously.The heat of fuel cell unit 110 is usually less than 80 ℃ and also forms about 70% to 80% of the used heat that all reclaim.Other building block is as fuel treating equipment 120 or system pipeline also generation warm during operation, and it forms about 20% to 30% of the used heat that all reclaim.
Therefore, the heat recovery equipment 100 of fuel cell system can be according to regulating the circulation-supplied amount of the heat exchange material corresponding with most suitable condition or select the disposal ability of heat exchanger as the heat generation amount in fuel cell unit 110 or fuel treating equipment 120 at building block.Therefore, the generating efficiency that fuel cell unit 110 can have raising remains on predetermined temperature simultaneously, and fuel treating equipment 120 also can runs steadily and do not exist heat unbalance.
Heat storage can 130 reclaims the used heat producing from fuel cell unit 110 or fuel treating equipment 120, used heat is stored in hot water or heat supply water.Heat storage can 130 according to external heat demand to outside hot-water supply or heat supply water.Now, heat storage can 130 receives the water as heat exchange material, in order to reclaim used heat and again to supply heat exchange material to the first heat exchanger 140 and the second heat exchanger 150.
The first heat exchanger 140 is connected on fuel cell unit 110 and is configured in order to allow the used heat and the heat exchange material that produce from fuel cell unit 110 to carry out heat exchange.As a result, the used heat producing from fuel cell unit 110 is included in heat exchange material.Heat exchange material is recycled to heat storage can 130.
The second heat exchanger 150 is independent of the first heat exchanger 140 and installs.The second heat exchanger 150 is connected to other building block of fuel cell system as on fuel treating equipment 120.The used heat producing from fuel treating equipment 120 is configured in order to carry out heat exchange with heat exchange material.As a result, the used heat producing from fuel treating equipment 120 is included in heat exchange material.Heat exchange material is recycled to heat storage can 130.
Now, the heat recovery equipment 100 of fuel cell system comprises for allowing heat exchange material as the following pipe passage that flows to the first heat exchanger 140 or the second heat exchanger 150 from heat storage can 130.
That is to say, in the heat recovery equipment 100 of fuel cell system, first pipe passage 164 is connected with the inlet ports 131 of heat storage can 130, but the first pipe passage 164 was branched off into the second pipe passage 144 and the 3rd pipe passage 154 before the first heat exchanger 140 and the second heat exchanger 150.The second pipe passage 144 is connected on the first heat exchanger 140, and the 3rd pipe passage 154 is connected on the second heat exchanger 150.The first pump 141 is arranged in the second pipe passage 144 and makes heat exchange material with predetermined flow velocity supply.The second pump 151 is arranged in the 3rd pipe passage 154 and makes heat exchange material with predetermined flow velocity supply.
In the heat recovery equipment 100 of fuel cell system, temperature sensor 242 and 252 is arranged on respectively heat exchange material and is recovered in the pipe passage of heat storage can 130 through it. Temperature sensor 242 and 252 is measured the temperature of heat exchange material.The temperature of measuring is with acting on the control data of determining independently the flow velocity of the heat exchange material in the first pump 141 and the second pump 151.
Be connected to the second pipe passage 144 for the path that reclaims heat exchange material from the second heat exchanger 150 to heat storage can 130, flow in the first heat exchanger 140, as shown in Figure 1 through the heat exchange material of the second heat exchanger 150 allowing.There is another kind of structure and can be independent of for reclaiming the path of heat exchange material and form from the first heat exchanger 140 to heat storage can 130 for the path that reclaims heat exchange material from the second heat exchanger 150 to heat storage can 130.
The 4th pipe passage 165 is connected on the first pipe passage 164 heat exchange material can be linked via another path and the first pipe passage 164.Air-cooling type radiator 160 is arranged in the 4th pipe passage 165.Be arranged on a part that is branched off into the 4th pipe passage 165 for the first pipe passage 164 for changing selectively the first triple valve 161 of the flow direction of heat exchange material.That is to say, in the situation in the time that external heat demand (use of hot water or heat supply water) is lower in summer, the flow passage of heat exchange material changes at the first triple valve 161 places, thereby causes the heat of heat exchange material to be distributed from air-cooling type radiator 160.
In addition, be multiplely formed on heat storage can 130 for introducing or discharge the port of heat exchange material.The plurality of port comprises: inlet ports 131, and its permission flows in the first heat exchanger 140 or the second heat exchanger 150 as the water of heat exchange material; And outlet port 132, it allows to reclaim the heat exchange material inflow heat storage can 130 of used heat from the first heat exchanger 140 or the second heat exchanger 150.Inlet ports 131 is roughly positioned at heat storage can 130 belows, outlet port 132 relative positioning above inlet ports 131.The plurality of port also comprises: water supply port, and it receives the water as heat exchange material from outside; And hot water emission's port or heat supply water discharge port, it is according to external heat demand discharge hot water or heat supply water.Water supply port is roughly positioned at heat storage can 130 belows, hot water emission's port and heat supply water discharge port relative positioning above water supply port.
Therefore, in the heat recovery equipment 100 of fuel cell system, the temperature difference between the heat exchange material in the upper and lower of heat storage can 130 remains in preset range, and can utilize the heat exchange material that contains used heat as hot water or heat supply water.
Fig. 2 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the second exemplary embodiment of the present invention.
As shown in Figure 2, compared with the heat recovery equipment 200 of fuel cell system according to a second embodiment of the present invention and the heat recovery equipment 100 of the fuel cell system shown in Fig. 1, also comprise the first check-valves 243 and the second check-valves 253.That is to say, the first check-valves 243 and the second check-valves 253 are used between heat exchange material flow periods, preventing that heat exchange material is back to heat storage can 130 as building block.
The flow direction of the first check-valves 243 based on heat exchange material is positioned at the downstream of the first pump 241 in the second pipe passage 244, thereby allows heat exchange material only to flow to the first heat exchanger 240 and can not be back to heat storage can 130.The the first check-valves 253 also flow direction based on heat exchange material is positioned at the downstream of the second pump 251 in the 3rd pipe passage 254, thereby allows heat exchange material only to flow to the second heat exchanger 250 and can not be back to heat storage can 130.
But, although show in the lump the first check-valves 243 and the second check-valves 253 in Fig. 2, any one in two valves 243 and 253 can be installed as required.Other building block of the heat recovery equipment 200 of fuel cell system corresponding to and carry out the function identical with the building block of the heat recovery equipment 100 of the fuel cell system shown in Fig. 1.Therefore, will omit its description.
Fig. 3 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 3rd exemplary embodiment of the present invention.
As shown in Figure 3, compared with the heat recovery equipment 200 of the heat recovery equipment 300 of the fuel cell system of the 3rd exemplary embodiment of the present invention and the fuel cell system shown in Fig. 2, also comprise for according to external heat demand to outside hot-water supply or heat supply water or reclaim the building block of hot water or heat supply water.
Heat storage can 330 receives water as heat exchange material and heat exchange material is circulated the first heat exchanger 340 and the second heat exchanger 350 from outside.After this, heat storage can 330 stored heat exchange materials are as the material that contains used heat.That is to say, water, as heat exchange material, circulation in the first heat exchanger 340 and the second heat exchanger 350, and be stored in the heat storage can 330 that contains used heat, obtain by this material that contains used heat.
Because hot water is for washing and cleaning, therefore mix with the material that contains used heat in order to prevent hot water in structural closure loop for administration of health.That is to say, hot water receives heat via the first hot switching path 333 of the closed-loop path structure as in heat storage can 330.The water of introducing through the first water supply port 334 carries out heat exchange with the material that contains used heat being stored in heat storage can 330, simultaneously through the first hot switching path 333.Be converted to the hot water of predetermined temperature or higher temperature and supply the outside with heat demand through hot water emission's port 335 through the water of the first hot switching path 333.
Heat supply water discharges and again introduces in heat storage can 330 through the heat supply water inlet port 338 that is positioned at heat storage can 330 belows through being positioned at the heat supply water discharge port 337 of heat storage can 330 tops.Now, because heat supply water may comprise according to being arranged on environment for use in fuel cell system through the outside heat supply water pipeline contaminated materials causing that circulates, therefore the same with hot water, another closed-loop path can be configured to prevent that heat supply water from mixing with the material that contains used heat of heat storage can 330.That is to say, heat supply water also receives heat through the second hot switching path 339 of the closed-loop path structure as in heat storage can 330.
The heat recovery equipment 300 of fuel cell system is configured to allow heat supply water recycle.The heat recovery equipment 300 of fuel cell system can utilize the material that contains used heat as heat supply water and without the second hot switching path 339 as required.Therefore the water of, introducing via the second water supply port 336 as heat exchange material contains used heat by the heat exchange in the first heat exchanger 340 and the second heat exchanger 350.The material that contains used heat as heat supply water circulates through heat supply water discharge port 337 and heat supply water inlet port 338.Although the temperature of heat supply water is lower in the situation in the time again introducing in heat storage can 330 when heat supply water, the temperature of heat supply water can rise to predetermined temperature again by the heat exchange in the first heat exchanger 340 and the second heat exchanger 350.
The heat recovery equipment 300 of fuel cell system comprises that auxiliary thermal source machine 370 makes the hot water that discharges from heat storage can 330 and the temperature of heat supply water can again rise to predetermined temperature or higher temperature.Auxiliary thermal source 370 comprises the 3rd heat exchanger 371 and the first auxiliary burner 372.The 3rd heat exchanger 371 is arranged in the vent pathway of hot water and heat supply water, and is configured in order to carry out heat exchange with hot water or heat supply water.The first auxiliary burner 372 produces heat and provides the 3rd heat exchanger 371 required heat according to external control signal.
The heat recovery equipment 300 of fuel cell system also comprises hot water and cold water mix to be applicable to using the temperature-sensing valve 373 of this water.Enter temperature-sensing valve 373 through guiding through the hot water of the 3rd heat exchanger 371 with from the cold water of outside supply.Hot water and cold water discharge from temperature-sensing valve 373 in the situation that of hot water and the mutual mixing of cold water.Temperature-sensing valve 373, as the heat control valve type that adopts temperature sensing executive component alloy, can supply always predetermined temperature range hot water and without power consumption.
As mentioned above, the heat recovery equipment 300 of fuel cell system has the pipeline structure to heat storage can 330 by Recovery of the hot water therein.Now, the 3rd pump 374 is arranged on heat supply water and is fed to the pipeline path of the 3rd heat exchange tank 371 through it from heat storage can 330, thereby allows to have the heat supply water flow of predetermined flow velocity.The second triple valve 375 is arranged on heat supply water and is recovered on the pipeline path of heat storage can 330 through it.The temperature of the heat supply water of the second triple valve 375 based in heat storage can 330 allows by reclaimed heat supply water introducing heat storage can 330 or through the recirculation of bypass path and without process heat storage can 330.
The heat recovery equipment 300 of fuel cell system is configured in order to allow from the bottom discharge heat exchange material of heat storage can 330 in the time reclaiming from used heat that fuel cell unit 310 or fuel treating equipment 320 produce and to be introduced into the top of heat storage can 330.The heat recovery equipment 300 of fuel cell system is configured in order to allow heat supply water to discharge and introduce the bottom of heat storage can 330 from the top of heat storage can 330 when heat supply water circulation time.Therefore, the temperature difference between the heat exchange material (or heat supply water) in the upper and lower of heat storage can 330 remains in preset range consistently, improves by this utilance of used heat.
But, in the heat recovery equipment 300 of fuel cell system, unless the used heat being stored in heat storage can 330 exceedes the storage limit of heat storage can 330, otherwise be preferably as follows the temperature difference of stating between the heat exchange material (or heat supply water) remaining in heat storage can 330.That is to say, preferably between the inlet ports 331 of heat storage can 330 and outlet port 332, the temperature difference of heat exchange material is remained in the scope of 8 ℃ to 12 ℃.Determine the disposal ability of each person in the first heat exchanger 340 and the second heat exchanger 350 according to this temperature difference.Preferably, the temperature difference between the heat exchange material in the upper and lower of heat storage can 330 (or heat supply water) is remained in the scope of 8 ℃ to 40 ℃.Determine the flow velocity of each person's heat exchange material in the first heat exchanger 340 and the second heat exchanger 350 according to this temperature difference.
Other building block of the heat recovery equipment 300 of fuel cell system corresponding to and carry out the function identical with the building block of the heat recovery equipment 200 of the fuel cell system shown in Fig. 2.Therefore, will omit its description.
Fig. 4 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 4th exemplary embodiment of the present invention.
As shown in Figure 4, the heat recovery equipment 400 of fuel cell system, compared with the heat recovery equipment of the fuel cell system shown in Fig. 3, also comprises safety valve 480, discharge valve 481, level sensor 482 and electromagnetically operated valve 483.
That is to say, in the situation of safety valve 480 in the time that the internal pressure of the heat storage can 430 producing when the heat exchange material in the top of heat storage can 330 exceedes predetermined excess pressure condition, activate, in order to reduce the internal pressure of heat storage can 430.
The measurement data of electromagnetically operated valve 483 and level sensor 482 synchronously regulates the supply of the water that is fed to heat storage can 430 inside.That is to say, supply channel is connected on the first water supply port 435 and makes to be fed to the first water supply port 435 from outside as the water of heat exchange material.
If desired can be by electromagnetically operated valve 483 being arranged on to the supply that regulates as required water in supply channel.Other building block of the heat recovery equipment 400 of fuel cell system corresponding to and carry out the function identical with the building block of the heat recovery equipment 300 of the fuel cell system shown in Fig. 3.Therefore, will omit its description.
Fig. 5 is according to the schematic diagram of the heat recovery equipment of the fuel cell system of the 5th exemplary embodiment of the present invention.
As shown in Figure 5, the heat recovery equipment 500 of fuel cell system, compared with the heat recovery equipment 400 of the fuel cell system shown in Fig. 4, also comprises and corresponds respectively to hot water and heat supply water and be divided into two-part auxiliary thermal source machine 570.
Auxiliary thermal source machine 570 comprises: the 4th heat exchanger 571, and it carries out heat exchange with the hot water discharging from heat storage can 530; And second auxiliary burner 572, its according to external control signal by producing heat to the 4th heat exchanger 571 heat supplies.Auxiliary thermal source machine 570 also comprises: the 5th heat exchanger 571, and it is independent of, and the 4th heat exchanger 571 is installed and carry out heat exchange with the heat supply water discharging from heat storage can 530; And the 3rd auxiliary burner 577, it produces heat with to the 5th heat exchanger 576 heat supplies according to external control signal.
The heat recovery equipment 500 of fuel cell system comprises two auxiliary thermal source machines 570, in order to selectively hot water or heat supply water are heated.That is to say, auxiliary thermal source machine 570 carrys out heat hot water with the 4th heat exchanger 571 and the second auxiliary burner 572 in the situation in the time that heat demand is lower in summer, and heats heat supply water with the 5th heat exchanger 576 and the 3rd auxiliary burner 577 in the situation in the time that heat demand is higher in the winter time.Therefore, the second auxiliary burner 572 with hot water with heat supply water is corresponding uses selectively, can be saved the fuel consumption of auxiliary thermal source machine 570 with the 3rd auxiliary burner 577 by this.Other building block of the heat recovery equipment 500 of fuel cell system corresponding to and carry out the function identical with the building block of the heat recovery equipment 400 of the fuel cell system shown in Fig. 4.Therefore, will omit its description.
Although described exemplary embodiment, the present invention is not limited to these exemplary embodiments.Under the prerequisite of scope that does not depart from claims, detailed description and accompanying drawing, can make various remodeling and change, and should be understood that, they all belong to scope of the present invention.
Claims (14)
1. a heat recovery equipment for fuel cell system, comprising:
The first heat exchanger, it reclaims the used heat producing from fuel cell unit;
Be independent of the second heat exchanger that described the first heat exchanger is installed, it reclaims the used heat producing from fuel treating equipment or system pipeline; And
Heat storage can, it supplies heat exchange material to described the first heat exchanger and described the second heat exchanger, and reclaims described heat exchange material to be included in the used heat in described heat exchange material according to external heat demand to outside supply,
Wherein, first pipe passage is connected with described heat storage can, described the first pipe passage was branched off into the second pipe passage and the 3rd pipe passage before described the first heat exchanger and described the second heat exchanger, and described the second pipe passage and described the 3rd pipe passage are connected on described the first heat exchanger and described the second heat exchanger
And wherein, the first pump is arranged in described the second pipe passage and makes described heat exchange material with the first predetermined flow velocity supply, and the second pump is arranged in described the 3rd pipe passage and makes described heat exchange material with the second predetermined flow velocity supply.
2. heat recovery equipment according to claim 1, it is characterized in that, the 4th pipe passage is connected on described the first pipe passage described heat exchange material can be linked via another path and described the first pipe passage, and air-cooling type radiator is arranged in described the 4th pipe passage, and be arranged on the part of described the 4th pipe passage of being branched off into of described the first pipe passage for changing selectively first triple valve of flow direction of described heat exchange material.
3. heat recovery equipment according to claim 1, it is characterized in that, allow the first check-valves that described heat exchange material flows along a direction to be arranged in described the second pipe passage, and allow the second check-valves that described heat exchange material flows along a direction to be arranged in described the 3rd pipe passage.
4. heat recovery equipment according to claim 1, it is characterized in that, described heat storage can receives described heat exchange material from outside, described heat exchange material is circulated in described the first heat exchanger and described the second heat exchanger, and store described heat exchange material as the material that contains used heat.
5. heat recovery equipment according to claim 4, it is characterized in that, the first hot switching path is arranged in described heat storage can, and the water of introducing in described the first hot switching path converts hot water to and is stored in described heat storage can by carrying out heat exchange with the described material that contains used heat.
6. heat recovery equipment according to claim 5, it is characterized in that, the second hot switching path is arranged in described heat storage can, and the water of introducing in described the second hot switching path converts heat supply water to and is stored in described heat storage can by carrying out heat exchange with the described material that contains used heat.
7. heat recovery equipment according to claim 6, is characterized in that, described heat recovery equipment also comprises:
The 3rd heat exchanger, it carries out heat exchange with the hot water or the heat supply water that discharge from described heat storage can; And
The first auxiliary burner, it produces heat with to described the 3rd heat exchanger heat supply according to external control signal.
8. heat recovery equipment according to claim 7, is characterized in that, described heat recovery equipment also comprises:
Temperature-sensing valve, enters wherein and mixes mutually through guiding through the hot water of described the 3rd heat exchanger and from the cold water of outside supply.
9. heat recovery equipment according to claim 8, is characterized in that, described temperature-sensing valve is by utilizing temperature sensing executive component alloy to make the valve of the heat control valve type that described hot water mixes mutually with described cold water.
10. heat recovery equipment according to claim 7, it is characterized in that, be supplied to outside to be used for carrying out heat supply function and described heat supply water is recovered to described heat storage can again through the heat supply water of described the 3rd heat exchanger, and second triple valve be arranged on described heat supply water and be recovered on the pipeline path of described heat storage can through it, thereby allow by operating selectively described the second triple valve, described heat supply water to be introduced in described heat storage can or through bypass path and is fed to outside.
11. heat recovery equipments according to claim 6, is characterized in that, described heat recovery equipment also comprises:
The 4th heat exchanger, it carries out heat exchange with the hot water discharging from described heat storage can;
The second auxiliary burner, it passes through according to external control signal generation heat and to described the 4th heat exchanger heat supply;
The 5th heat exchanger, it is independent of described the 4th heat exchanger and installs and carry out heat exchange with the heat supply water discharging from described heat storage can; And
The 3rd auxiliary burner, it produces heat with to described the 5th heat exchanger heat supply according to external control signal.
12. heat recovery equipments according to claim 1, it is characterized in that, the level sensor that is used for the water level of measuring described heat exchange material is arranged on described heat storage can, supply channel is connected on described heat storage can and makes to be supplied to described heat storage can as the water of described heat exchange material, and for regulating the electromagnetically operated valve of the supply of water to be arranged on described supply channel in conjunction with the measurement data of described level sensor.
13. heat recovery equipments according to claim 1, is characterized in that, are reduced to the top that is arranged on described heat storage can lower than the safety valve of the pressure of predetermined excess pressure condition for the internal pressure of described heat storage can that described heat exchange material is produced.
14. heat recovery equipments according to claim 1, is characterized in that, are arranged on the bottom of described heat storage can for as required described heat exchange material being discharged into outside discharge valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0105501 | 2007-10-19 | ||
| KR1020070105501A KR100911055B1 (en) | 2007-10-19 | 2007-10-19 | Heat Recovery Apparatus of Fuel Cell System |
| PCT/KR2008/005428 WO2009051348A1 (en) | 2007-10-19 | 2008-09-12 | Heat recovery apparatus of fuel cell system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101828292A CN101828292A (en) | 2010-09-08 |
| CN101828292B true CN101828292B (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880112573.6A Active CN101828292B (en) | 2007-10-19 | 2008-09-12 | Heat recovery apparatus of fuel cell system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5295257B2 (en) |
| KR (1) | KR100911055B1 (en) |
| CN (1) | CN101828292B (en) |
| WO (1) | WO2009051348A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101962772B1 (en) | 2011-08-23 | 2019-03-27 | 하이드로지니어스 테크놀로지스 게엠베하 | Arrangement and method for supplying energy to buildings |
| KR101368667B1 (en) * | 2012-02-02 | 2014-03-06 | 삼성중공업 주식회사 | Fuel cell system for ship |
| KR101339619B1 (en) * | 2012-09-18 | 2013-12-10 | 현대하이스코 주식회사 | Hot water tank of fuel cell system having heat exchanger |
| EP3163660A4 (en) * | 2014-06-26 | 2017-11-22 | Kyungdong Navien Co., Ltd. | Fuel cell module having increased thermal efficiency, and heating system using same and control method thereof |
| DE102018212537A1 (en) * | 2018-07-27 | 2020-01-30 | Audi Ag | Device and method for raising a temperature in at least part of a vehicle |
| KR102204693B1 (en) * | 2018-11-23 | 2021-01-18 | 주식회사 두산 | System for multiple fuel cells |
| CN109878674B (en) * | 2019-02-18 | 2020-12-15 | 德州新动能铁塔发电有限公司 | Yacht powered by water-hydrogen power generation |
| CN111169326B (en) * | 2020-01-14 | 2021-10-26 | 中车株洲电力机车有限公司 | Fuel cell heat exchange system and hydrogen energy tramcar |
| CN112290048A (en) * | 2020-09-16 | 2021-01-29 | 艾氢技术(苏州)有限公司 | Solid hydrogen fuel cell motor home |
| CN112803037B (en) * | 2021-01-18 | 2023-01-03 | 国网浙江慈溪市供电有限公司 | Fuel cell with energy recovery function |
| CN113437332B (en) * | 2021-07-16 | 2022-10-21 | 全球能源互联网研究院有限公司 | Heat recovery system of fuel cell |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101828292A (en) | 2010-09-08 |
| KR20090039975A (en) | 2009-04-23 |
| KR100911055B1 (en) | 2009-08-06 |
| JP5295257B2 (en) | 2013-09-18 |
| WO2009051348A1 (en) | 2009-04-23 |
| JP2011501356A (en) | 2011-01-06 |
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Owner name: DOOSAN CORP. Free format text: FORMER OWNER: FUELCELL POWER INC. Effective date: 20150302 |
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