CN1532973A - Heat utilizing system for fuel cell and its control method - Google Patents
Heat utilizing system for fuel cell and its control method Download PDFInfo
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- CN1532973A CN1532973A CNA03121004XA CN03121004A CN1532973A CN 1532973 A CN1532973 A CN 1532973A CN A03121004X A CNA03121004X A CN A03121004XA CN 03121004 A CN03121004 A CN 03121004A CN 1532973 A CN1532973 A CN 1532973A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
This invented system includes that a conversion device utilizes supplied heat to generate hydrogen, an anode and a cathode are set in the battery set and hydrogen or fuels with hydrogen are supplied to the anode and oxygen or oxidant with oxygen are provided to the said cathode to generate electricity and heat by electrochemical reactions, a master exhaust line leads the vent gas generated by the said conversion device to heat the water in a warm water generator mounted on the line, a branch vent gas line from the master one leads it utilized by a water supply device mounted on the branch line to supply water to the said conversion device and the battery set, a valve leads the vent gas generated by the conversion device to the said master and branch vent lines.
Description
Technical Field
The present invention relates to a heat utilization system for a fuel cell and a control method thereof, which can perform heating and warm water supply using gas discharged from a reformer, or start a water supply device to supply water to the reformer and a stack.
Background
In general, a fuel cell is a device that directly converts energy of fuel into electric energy. Generally, a porous anode (anode) and a porous cathode (cathode) are provided on both sides of a polymer electrolyte membrane in a stack (stack), and hydrogen gas or a fuel gas containing hydrogen gas is supplied to the anode (an oxidation electrode or a fuel electrode) and an oxidation gas containing oxygen gas is supplied to the cathode (a reduction electrode or an air electrode). In the above process, hydrogen as a fuel is subjected to an electrochemical reduction reaction at the anode; generating an electrochemical oxidation reaction at the cathode with oxygen as an oxidizing agent; at this time, electricity and heat are generated by the movement of the generated electrons.
In the above fuel cell, the conductivity of hydrogen ions (H +) will decrease after the electrolyte membrane of the above stack becomes dry; in addition, after the electrolyte membrane shrinks, the contact resistance of the membrane and the electrodes increases, and the performance of the battery described above is degraded. Therefore, when fuelor air is supplied to the stack, water is always supplied together with water vapor.
The reformer is configured to supply hydrogen gas to the stack, and fuel flows into a reaction furnace formed inside the reformer. And simultaneously, starting a blast lamp of the conversion device to generate a conversion reaction, and supplying hydrogen generated by the conversion reaction to the battery pack. The reaction mechanism (mechanism) of the above-mentioned conversion apparatus will be described in more detail below.
As shown in the above reaction formula (1), when methane (methane), that is, a main component of Liquefied Natural Gas (LNG), is supplied to the reformer, the supplied methane is divided into two parts, and a part of the methane is used for generating hydrogen gas, but the reaction formula is satisfied under a high temperature condition of 600 degrees or more, and the other part of the methane is supplied as fuel to a burner (burner) installed inside the reformer in order to satisfy the high temperature condition of 600 degrees or more. Water (H)2O) reacts with the fuel used to generate the hydrogen gas,the above water (H)2O) is supplied in a high temperature gaseous state.
In addition, carbon monoxide (CO) generated in the reaction formula (1) causes a decrease in the activity of the fuel cell catalyst, which causes a decrease in the performance thereof, and therefore, it is necessary to remove carbon monoxide (CO). As shown in the reaction formula (2), the carbon monoxide (CO) is removed by mixing the carbon monoxide (CO) with water (H)2O) to remove the above carbon monoxide (CO) and generate hydrogen (H)2)。
In the reaction formula (2), the first reaction is performed at 800 degrees, the second reaction is performed at 200 degrees, the burner that raises the temperature inside the reformer generates heat, and the gas containing the heat of combustion at high temperature is discharged to the outside after the reforming reaction.
However, in the conventional fuel cell having the above-described structure, the gas discharged from the reformer, which contains high-temperature combustion heat, is directly discharged to the outside, and the heat is not effectively utilized, thereby causing energy waste.
Disclosure of Invention
In view of the above-described problems, an object of the present invention is to provide a heat utilization system for a fuel cell and a control method thereof, which can provide the following effects: the utilization efficiency of energy is improved by effectively utilizing the heat contained in the exhaust gas discharged from the conversion device.
In order to achieve the above object of the present invention, the present invention provides a heat utilization system for a fuel cell, comprising: the device mainly comprises a conversion device, a battery pack, a main exhaust line, a branch exhaust line and an opening and closing valve. The reformer generates hydrogen gas using the supplied fuel; in the above battery, an anode and a cathode are respectively provided on both sides of an electrolyte, hydrogen or a fuel containing hydrogen generated by the above conversion device is supplied to the anode, oxygen or an oxidant containing oxygen is supplied to the cathode, and electricity and heat are generated by an electrochemical reaction of hydrogen and oxygen; a main exhaust line for guiding the exhaust gas generated by the conversion device, wherein a warm water generating device is installed on the main exhaust line, and the warm water generating device heats water by using the exhaust gas; a branch exhaust line branched from the main exhaust line for guiding exhaust gas, the branch exhaust line having a moisture supply device mounted thereon for supplying moisture to the reforming device and the battery pack by using the exhaust gas; the open/close valve is used for selectively guiding the exhaust gas generated by the conversion device to the main exhaust line and the branch exhaust line.
The invention also provides a control method of the heat utilization system of the fuel cell, which is characterized by comprising the following four stages: the first stage is as follows: measuring the temperature of the water storage tank, and if the measured temperature is higher than the set temperature and the flow rate of the water storage tank is higher than the set flow rate, supplying moisture to the conversion device and the battery pack; and a second stage: measuring the temperature of the water storage tank, and if the measured temperature is higher than a set temperature and the flow rate of the water storage tank is not higher than a set flow rate, supplying water to the water storage tank and simultaneously supplying water to the conversion device and the battery pack; and a third stage: measuring the temperature of the water storage tank, and heating the water stored in the water storage tank when the measured temperature is not higher than a set temperature and the flow rate of the water storage tank is higher than a set flow rate; a fourth stage: and measuring the temperature of the water storage tank, and if the measured temperature is not higher than the set temperature and the flow rate of the water storage tank is not higher than the set flow rate, supplying water to the water storage tank and heating the water.
As can be understood from the above description of the present invention, the heat utilization system of the fuel cell and the control method thereof of the present invention can provide the following effects:
firstly, the conversion device supplies oxygen to a battery pack which generates electricity and heat, a heat exchanger of the warm water generation device is started by utilizing gas discharged by the conversion device, and water stored in a water storage tank is heated by starting the heat exchanger; or the steam generator and the humidifying device of the moisture supply device are started by the exhaust gas, and moisture is supplied to the conversion device and the battery pack by starting the steam generator and the humidifying device, so that the energy utilization efficiency of the fuel cell is improved.
In addition, the temperature and flow rate of the water stored in the water storage tank are measured, heat is sensed, the open-close valve is started through the sensing signal, and the warm water generating device and the water supply device are selectively started through the open-close valve, so that the automation of the fuel cell is realized, and the energy utilization efficiency is improved.
Drawings
Fig. 1 shows a schematic diagram of a fuel cell heat utilization system of an embodiment of the present invention.
Fig. 2 shows a flowchart of the process performed by the heat utilization system control method of the fuel cell of fig. 1 described above.
Description of the reference numerals of the main components
1: fuel tank 2: battery pack
3: electrolyte membrane 4: fuel electrode
5: an air electrode 6: fuel supply line
10: conversion device 10 a: reaction furnace
10 b: the blowtorch 11: main exhaust line
12: branch exhaust line 13: open-close valve
20 warm water generating device 21: water storage tank
22: hot water circulation flow path 23: heat exchanger
24: the pump 25: water supply channel supplement flow path
25 a: the upper water passage regulating valve 30: moisture supply device
31: the steam generator 32: humidifying device
Detailed Description
The heat utilization system of a fuel cell and the control method thereof according to the embodiment of the present invention will be described in more detail below with reference to the drawings.
Fig. 1 shows a schematic diagram of a heat utilization system of a fuel cell of an embodiment of the invention. As shown in fig. 1, the heat utilization system of the fuel cell generally includes a fuel tank 1, a Reformer (Reformer)10, and a Stack (Stack) 2. The fuel tank 1 is filled with gasoline or other hydrocarbon gas (LNG, LPG, CH)3Oh..) series of fuels; the reformer 10 is connected to the fuel tank 1 and generates hydrogen gas from fuel; the stack 2 is connected to the reformer 10, and the hydrogen gas generated by the reformer 10 causes a reduction reaction in the stack 2, and the oxygen gas supplied separately causes a reduction reaction in the stack 2, thereby generating electricity and heat. In the above-described stack 2, a fuel electrode (anode) 4 and an air electrode (cathode) 5 are formed on both sides of the electrolyte membrane 3, respectively. Supplying hydrogen gas or a fuel substance containing hydrogen gas to the fuel electrode 4; an oxidizingagent containing oxygen is supplied to the air electrode 5.
The above-described conversion apparatus 10 generally includes a main exhaust line 11, a branch exhaust line 12, and an open-close valve 13. The converter 10 is provided with a reactor 10a and a torch 10 b. A main exhaust line 11 for guiding the exhaust gas generated by the reformer 10, wherein a hot water generator 20 is installed on the main exhaust line 11, and the hot water generator 20 heats water by the guided exhaust gas; the branch exhaust line 12 is branched from the main exhaust line 11, the branch exhaust line 12 also guides the exhaust gas, a moisture supply device 30 is provided on the branch exhaust line 12, and the moisture supply device 30 supplies moisture to the conversion device 10 and the battery pack 2 by using the guided exhaust gas; the open/close valve 13 is installed at a branch point between the main exhaust line 11 and the branch exhaust line 12, and the open/close valve 13 selectively guides the exhaust gas generated in the reformer 10 to be supplied to the main exhaust line 11 and the branch exhaust line 12.
The warm water generator 20 generally includes a water storage tank 21, a warm water circulation flow path 22, and a heat exchanger 23. A temperature sensor 21a and a level gauge 21b are attached to the water storage tank 21, and the temperature sensor 21a supplies a control signal to the open/close valve 13; the warm water circulation path 22 is communicated with the water storage tank 21 so that water in the water storage tank 21 flows to the outside; the heat exchanger 23 is connected to one end of the warm water circulation passage 22. The heat exchanger 23 is attached to the main exhaust line 11, and heats the water in the warm water circulation passage 22 by the exhaust gas. A pump 24 and a water supply line replenishing passage 25 are provided at intermediate positions of the warm water circulation passage 22. The pump 24 applies a flow force to the water circulating through the hot water circulation passage 22; the water supply line replenishing channel 25 supplies water to the water storage tank 21, and a water supply line adjusting valve 25a is provided in the water supply line replenishing channel 25.
The moisture supply device 30 is connected in series to the branch exhaust line 12 by a steam generator (steam generator)31 and a humidifying device 32. The steam generator 31 supplies steam to the reformer 10 by using the exhaust gas; the humidifier 32 supplies moisture to the stack 2 by using the exhaust gas.
The operation and effect of the heat utilization system of the fuel cell having the above-described configuration and the system control method will be described below.
In the above fuel cells, gasoline or other hydrocarbon gas (LNG, LPG, CH) is contained3Oh..) fuel liquid supplied from the fuel tank 1 for the series of fuel is mixed with water and air, and flows into the reformer 10 through the fuel supply line 6. Wherein a part of the fuel liquid flows into the burner 10b of the reformer 10 to be combusted, and the remaining part flows into the reactor 10a to be subjected to desulfurization, reforming, and hydrogen refining reactions to generate hydrogen. The hydrogen gas is supplied to the fuel electrode 4 of the stack 2, and generates electricity and heat through electrochemical reaction together with the oxygen gas supplied to the air electrode 5. The electricity is supplied to each electronic product through a power converter (not shown in the drawings) to be a power source.
At this time, the combustion heat generated by the torch 10b of the reformer 10 is contained in the exhaust gas, and the heat utilization system using the exhaust gas and the control method thereof mainly include the following four stages. The first stage is as follows: as shown in fig. 2, the temperature of the water stored in the water storage tank 21 is measured by a temperature sensor 21a installed in the water storage tank 21, and if the measured temperature T is higher than a set temperature T0Then, the flow rate L of the water is measured by a level meter 21b attached to the water storage tank 21, and the measured flow rate L is higher than the set flow rate L0Supplying moisture to the conversion device 10 and the battery pack 2; and a second stage: the temperature of the water stored in the water storage tank 21 is measured by a temperature sensor 21a mounted on the water storage tank 21, and if the measured temperature T is at a set temperature T0As described above, the flow rate L of the water measured by the level gauge 21b attached to the water storage tank 21 is not equal to the set flow rate L0In the above case, water is supplied to the water storage tank 21 and water is supplied to the reformer 10 and the battery pack 2; and a third stage: the temperature of the water stored in the water storage tank 21 is measured by a temperature sensor 21a mounted on the water storage tank 21, and if the temperature T is not at the set temperature T0The flow rate L of the water measured by the level gauge 21b attached to the water storage tank 21 is set to the set flow rate L as described above0When above, toHeating the water stored in the water storage tank 21; a fourth stage: the temperature of the water stored in the water storage tank 21 is measured by a temperature sensor 21a attached to the water storage tank 21, and if the measured temperature T is not at the set temperature T0As described above, the flow rate L of the water measured by the level gauge 21b attached to the water storage tank 21 is not equal to the set flow rate L0In this case, water is supplied to the water storage tank 21 and heated.
The first stage includes a stage of judgingwater temperature, a stage of supplying exhaust gas, a stage of judging water flow rate, and a stage of adjusting the water supply passage adjusting valve 25a and the pump 24.
And (3) judging the water temperature: after the temperature of the water stored in the water storage tank 21 is measured by the temperature sensor 21a, it is determined whether the temperature T of the water is at a set temperature T0The above. Supply of exhaust gas stage: if the temperature T of the water is at the set temperature T0In this case, the open/close valve 13 is actuated to supply the exhaust gas to the branch exhaust line 12. Judging the flow of water: after the flow rate of the water stored in the water storage tank 21 is measured by the level gauge 21b, it is determined whether the flow rate L of the water is at a set flow rate L0The above. Stage of regulating the water supply channel regulating valve 25a and the pump 24: starting the steam generator 31 installed on the branch exhaust line 12 by using the exhaust gas supplied to the branch exhaust line 12 to supply moisture to the reformer 10; at the same time, the humidifier 32 is started to add water to the battery pack 2. When the flow rate L of the water is set at the set flow rate L0In the above case, the upper water supply control valve 25a of the upper water supply replenishment flow path 25 is closed to stop the supply of water; the operation of the pump 24 is stopped, and the circulation of water into the warm water circulation passage 22 is stopped to be heated.
The second stage includes a stage of judging the temperature of water, a stage of supplying exhaust gas, a stage of judging the flow rate of water, and a stage of adjusting the water supply passage adjusting valve 25a and the pump 24. And (3) judging the water temperature: after the temperature of the water stored in the water storage tank 21 is measured by the temperature sensor 21a, it is determined whether the temperature T of the water is at a set temperature T0The above.Supply of exhaust gas stage: if the temperature T of the water is at the set temperature T0In this case, the open/close valve 13 is actuated to supply the exhaust gas to the branch exhaust line 12. Judging the flow of water: after the flow rate of the water stored in the water storage tank 21 is measured by the level gauge 21b, it is determined whether the flow rate L of the water is at a set flow rate L0The above. Stage of regulating the water supply channel regulating valve 25a and the pump 24: starting the steam generator 31 installed on the branch exhaust line 12 by using the exhaust gas supplied to the branch exhaust line 12 to supply moisture to the reformer 10; at the same time, the humidifier 32 is started to add water to the battery pack 2. When the flow rate L of the water is not in the set flow rate L0In this case, the operation of the pump 24 is stopped, and the circulation of water into the warm water circulation flow path 22 is stopped to be heated; the water supply line adjusting valve 25a is opened to supply water to the water storage tank 21 through the water supply line replenishing passage 25.
The third stage includes a stage of judging the water temperature, a stage of supplying the exhaust gas, a stage of judging the flow rate of water, and a stage of adjusting the water supply passage adjusting valve 25a and the pump 24. And (3) judging the water temperature: after the temperature of the water stored in the water storage tank 21 is measured by the temperature sensor 21a, it is determined whether the temperature T of the water is at a set temperature T0The above. Supply of exhaust gas stage: if the temperature T of the water is not at the set temperature T0In this case, the open/close valve 13 is actuated to supply the exhaust gas to the main exhaust line 11. Judging the flow of water: the liquid level meter 21b measures the liquid level of the liquid stored in the water storage tank 21After the flow rate of the water in the water tank, it is judged whether the flow rate L of the water is at the set flow rate L0The above. Stage of regulating the water supply channel regulating valve 25a and the pump 24: the heat exchanger 23 attached to the main exhaust line 11 is started by the exhaust gas supplied to the main exhaust line 11, and the water in the warm water circulation passage 22 is heated. If the flow rate L of the water is set at the set flow rate L0In this case, the pump 25 is started to circularly heat the water stored in the water storage tank 21; the supply of the water supply through the water supply line replenishment path 25 is interrupted by closing the water supply line adjustment valve 25 a.
The fourth stage includes a stage of judging the water temperature, a stage of supplying the exhaust gas, a stage of judging the flow rate of water, and a stage of adjusting the water supply passage adjusting valve 25a and the pump 24. And (3) judging the water temperature: after the temperature of the water stored in the water storage tank 21 is measured by the temperature sensor 21a, it is determined whether the temperature T of the water is at a set temperature T0The above. Supply of exhaust gas stage: if the temperature T of the water is not at the set temperature T0In this case, the open/close valve 13 is actuated to supply the exhaust gas to the main exhaust line 11. Judging the flow of water: after the flow rate of the water stored in the water storage tank 21 is measured by the level gauge 21b, it is determined whether the flow rate L of the water is at a set flow rate L0The above. Stage of regulating the water supply channel regulating valve 25a and the pump 24: the heat exchanger 23 attached to the main exhaust line 11 is started by the exhaust gas supplied to the main exhaust line 11, and the water inthe warm water circulation passage 22 is heated. If the flow rate L of the water is not in the set flow rate L0In the above case, the operation of the pump 24 is stopped, and the circulation of the water stored in the water storage tank 21 through the warm water circulation passage 22 is stopped; the upper water supply line adjusting valve 25a is opened so that the upper water supplied to the upper water supply line 25 is heated by the heat exchanger 23 and stored in the water storage tank 21.
As described above, the heat utilization system of a fuel cell and the control method thereof according to the present invention can provide the following effects: the warm water generating device is started by utilizing the exhaust gas discharged by the conversion device or the moisture supplying device is started, so that the energy utilization efficiency of the fuel cell is improved.
Although the embodiments of the present invention have been described in detail so far, those having ordinary skill in the art to which the present invention pertains may make many modifications within the scope of the basic technical idea of the present invention. The basic technical idea of the present invention is embodied in the scope of the claims, and all differences within the equivalent scope should be construed as falling within the scope of the present invention.
Claims (9)
1. A heat utilization system for a fuel cell, comprising:
the device comprises a conversion device, a battery pack, a main exhaust line, a branch exhaust line and an opening and closing valve;
the reformer generates hydrogen gas using the supplied fuel;
in the above-mentioned battery, there are positive pole and negative pole separately on both sidesof electrolyte, supply the hydrogen or fuel comprising hydrogen that the above-mentioned reformer produced to the above-mentioned positive pole, supply the oxygen or oxidizing agent comprising oxygen to the above-mentioned negative pole, produce electricity and heat through the electrochemical reaction of the above-mentioned hydrogen and oxygen;
a main exhaust line for guiding the exhaust gas generated by the conversion device, wherein a warm water generating device is installed on the main exhaust line, and the warm water generating device heats water by using the exhaust gas;
a branch exhaust line branched from the main exhaust line for guiding exhaust gas, the branch exhaust line having a moisture supply device mounted thereon for supplying moisture to the reforming device and the battery pack by using the exhaust gas;
the open/close valve is used for selectively guiding the exhaust gas generated by the conversion device to the main exhaust line and the branch exhaust line.
2. The heat utilization system of a fuel cell according to claim 1, characterized in that: the warm water generating device mainly comprises a water storage tank, a warm water circulating flow path and a heat exchanger; the water storage tank is provided with a temperature sensor and a liquid level meter, and the temperature sensor is used for providing a control signal for the opening and closing valve; the warm water circulation flow path is communicated with the water storage tank to enable water in the water storage tank to flow outwards; the heat exchanger is connected to one end of the warm water circulation passage, and the heat exchanger is installed on the main exhaust line to heat the water in the warm water circulation passage by the exhaust gas.
3. The heat utilization system of a fuel cell according to claim 2, characterized in that: the warm water circulating flow path is provided with a pump and an upper water channel replenishing flow path; the pump applies a flow force to the water circulating through the warm water circulation flow path; the water supply channel is provided with a water supply channel adjusting valve for supplying water to the water storage tank.
4. The heat utilization system of a fuel cell according to claim 1, characterized in that:
the moisture supply device is connected in series with the branch exhaust line through a steam generator and a humidifying device; the steam generator supplies steam to the conversion device by using the exhaust gas; the humidifier supplies moisture to the stack by using the exhaust gas.
5. A heat utilization system control method of a fuel cell is characterized by comprising the following four stages:
the first stage is as follows: measuring the temperature of the water storage tank, and if the measured temperature is higher than the set temperature and the flow rate of the water storage tank is higher than the set flow rate, supplying moisture to the conversion device and the battery pack;
and a second stage: measuring the temperature of the water storage tank, and if the measured temperature is higher than a set temperature and the flow rate of the water storage tank is not higher than a set flow rate, supplying water to the water storage tank and simultaneously supplying water to the conversion device and the battery pack;
and a third stage: measuring the temperature of the water storage tank, and heating the water stored in the water storage tank when the measured temperature is not higher than a settemperature and the flow rate of the water storage tank is higher than a set flow rate;
a fourth stage: and measuring the temperature of the water storage tank, and if the measured temperature is not higher than the set temperature and the flow rate of the water storage tank is not higher than the set flow rate, supplying water to the water storage tank and heating the water.
6. The heat utilization system control method of a fuel cell according to claim 5, characterized in that:
the first stage comprises a stage of measuring water temperature, a stage of supplying exhaust gas, a stage of measuring flow rate and a stage of controlling circulating water and water feeding;
stage of measuring water temperature: measuring the temperature of the water stored in the water storage tank by using a temperature sensor mounted on the water storage tank;
exhaust gas supply stage: an open/close valve which is installed at a branch point between the main exhaust line and a branch exhaust line, and which is activated in accordance with the temperature measured by the temperature sensor to supply the exhaust gas to the branch exhaust line;
and (3) measuring the flow: measuring a flow rate of water stored in the water storage tank by using a level gauge attached to the water storage tank;
circulating water and water feeding control stage: and a water supply device installed on the branch exhaust line is started by the exhaust gas supplied to the branch exhaust line, and water is supplied to the conversion device and the battery pack, and the circulation and the water supply replenishment for heating the water in the water storage tank are interrupted based on the flow rate of the water measured by the liquid level meter.
7. The heat utilization system control method of a fuel cell according to claim 5, characterized in that:
the second stage comprises a stage of measuring water temperature, a stage of supplying exhaust gas, a stage of measuring flow rate and a stage of controlling circulating water and water feeding;
stage of measuring water temperature: measuring the temperature of the water stored in the water storage tank by using a temperature sensor mounted on the water storage tank;
exhaust gas supply stage: the open/close valve is activated according to the temperature measured by the temperature sensor, and supplies the exhaust gas to the branch exhaust line;
and (3) measuring the flow: measuring a flow rate of water stored in the water storage tank by using a level gauge attached to the water storage tank;
circulating water and water feeding control stage: and a water supply device installed on the branch exhaust line is started by using the exhaust gas supplied to the branch exhaust line, water is supplied to the conversion device and the battery pack, and the circulation of water for heating to the water storage tank is stopped and the water supply is supplemented according to the flow rate of the water measured by the liquid level meter.
8. The heat utilization system control method of a fuel cell according to claim 5, characterized in that:
the third stage includes the stage of measuring water temperature, the stage of supplying exhaust gas, the stage of measuring flow rate and the stage of controlling circulating water and water supply;
stage of measuring water temperature: measuring the temperature of the water stored in the water storage tank by using a temperature sensor mounted on the water storage tank;
exhaust gas supply stage: the open/close valve is started according to the temperature measured by the temperature sensor, and supplies the exhaust gas to the main exhaust line;
and (3) measuring the flow: measuring a flow rate of water stored in the water storage tank by using a level gauge attached to the water storage tank;
circulating water and water feeding control stage: the hot water generating device installed on the main exhaust line is started by the exhaust gas supplied to the main exhaust line, the water stored in the water storage tank is heated, the water used for heating is circulated into the water storage tank according to the flow rate of the water measured by the liquid level meter, and the water supply supplement is interrupted.
9. The heat utilization system control method of a fuel cell according to claim 5, characterized in that:
the fourth stage comprises a stage of measuring water temperature, a stage of supplying exhaust gas, a stage of measuring flow and a stage of controlling circulating water and water feeding;
stage of measuring water temperature: measuring the temperature of the water stored in the water storage tank by using a temperature sensor mounted on the water storage tank;
exhaust gas supply stage: the open/close valve is started according to the temperature measured by the temperature sensor, and supplies the exhaust gas to the main exhaust line;
and (3) measuring the flow: measuring a flow rate of water stored in the water storage tank by using a level gauge attached to the water storage tank;
circulating water and water feeding control stage: and a warm water generating device installed on the main exhaust line is started by using the exhaust gas supplied to the main exhaust line, the warm water generating device heats the water stored in the water storage tank, heats the feed water supplemented to the water storage tank according to the flow rate of the water measured by the liquid level meter, and stops the water in the water storage tank from circulating to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03121004XA CN1532973A (en) | 2003-03-21 | 2003-03-21 | Heat utilizing system for fuel cell and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03121004XA CN1532973A (en) | 2003-03-21 | 2003-03-21 | Heat utilizing system for fuel cell and its control method |
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| CN1532973A true CN1532973A (en) | 2004-09-29 |
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| CNA03121004XA Pending CN1532973A (en) | 2003-03-21 | 2003-03-21 | Heat utilizing system for fuel cell and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101151760B (en) * | 2005-03-24 | 2010-09-15 | 富士通株式会社 | Fuel cell |
| CN103579650A (en) * | 2012-08-09 | 2014-02-12 | 现代摩比斯株式会社 | Integrated valve device of fuel cell vehicle |
-
2003
- 2003-03-21 CN CNA03121004XA patent/CN1532973A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101151760B (en) * | 2005-03-24 | 2010-09-15 | 富士通株式会社 | Fuel cell |
| CN103579650A (en) * | 2012-08-09 | 2014-02-12 | 现代摩比斯株式会社 | Integrated valve device of fuel cell vehicle |
| CN103579650B (en) * | 2012-08-09 | 2016-02-24 | 现代摩比斯株式会社 | The integral valve door gear of fuel-cell vehicle |
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