Fuel cell system
AssigneeLG Electronics Inc.
InventorsHeejoong JANG, Dongkeun YANG, Hyoungsuk WOO, Jihoon JUN
Life of this patent
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Abstract
A fuel cell system may include: a stack for generating power through an electrochemical reaction of reforming gas and air; a fuel processing apparatus for generating the reforming gas supplied to the stack; a water supply tank for storing the water; a heat recovery tank for storing hot water; a first heat exchanger disposed in the fuel processing apparatus, and exchanging heat between cooling water and exhaust gas discharged from the fuel processing apparatus; and a heat supply valve for supplying the cooling water to the water supply tank or the heat recovery tank so as to heat the water stored in the water supply tank or the hot water stored in the heat recovery tank.
Claims20
A fuel cell system comprising:
- a stack configured to provide power based on an electrochemical reaction of reforming gas and air;
- a fuel processing apparatus configured to provide the reforming gas to be supplied to the stack;
- a water supply tank configured to store the water to be supplied to the stack;
- a heat recovery tank configured to store hot water;
- a first heat exchanger disposed at the fuel processing apparatus, and configured to exchange heat between cooling water and exhaust gas that is discharged from the fuel processing apparatus, and to provide cooling water based on the exchanged heat;
- and
- a heat supply valve configured to selectively provide the cooling water from the first heat exchanger to the water supply tank so as to heat the water in the water supply tank or to the heat recovery tank so as to heat the hot water in the heat recovery tank.
A control method of a fuel cell system that includes a fuel processing apparatus for providing reforming gas, a stack for providing power by using the reforming gas, a water supply tank for storing cooling water, a heat recovery tank for storing hot water, and a waste heat recovery unit for recovering waste heat of the fuel processing apparatus through the cooling water and heating the cooling water of the water supply tank or the hot water of the heat recovery tank, comprising:
- warming up the cooling water in the water supply tank by controlling a switch valve based on a temperature of the cooling water in the water supply tank,
- wherein the waste heat recovery unit includes a switch valve configured to control a flow direction of the cooling water circulated in the waste heat recover unit.
A fuel cell system comprising:
- a stack configured to generate power based on an electrochemical reaction of reforming gas and air;
- a fuel processing apparatus configured to provide the reforming gas and to provide exhaust gas;
- a water supply tank configured to store the water;
- a heat recovery tank configured to store hot water;
- a first heat exchanger configured to exchange heat between cooling water and the exhaust gas from the fuel processing apparatus, and to provide cooling water based on the exchanged heat;
- and
- a heat supply valve configured to selectively provide the cooling water from the first heat exchanger to the water supply tank or to the heat recovery tank.
Dependencies are inferred from the claim text.