Fuel cell power generating system and operation method
AssigneeKurita Water Industries Ltd.
InventorYoshiteru Misumi
Life of this patent
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Abstract
Disclosed is a fuel cell power generating system which comprises a fuel cell unit having a coolant circulation system; a water storage tank for supply water to serve as coolant for the fuel cell unit; a water treatment system for purifying the supply water in the water storage tank and supplying the purified supply water as coolant to the fuel cell unit; heating means for heating water; a hot water storage tank for hot water acquired by the heating means; and a condensed-water supply system for supplying the water storage tank with condensed water obtained by condensing steam from the hot water in the hot water storage tank.
Claims11
A fuel cell power generating system comprising:
- a fuel cell unit having a coolant circulation system;
- a water storage tank for supply water to serve as coolant for said fuel cell unit;
- a water treatment system for purifying said supply water in said water storage tank and supplying said purified supply water as coolant to said fuel cell unit;
- a heating device for heating water;
- a hot water storage tank for hot water acquired by said heating device;
- and
- a condensed-water supply system for supplying said water storage tank with condensed water obtained by condensing steam from said hot water in said hot water storage tank,
- wherein said condensed-water supply system has a heat exchanger for condensing steam from said hot water in said hot water storage tank by cooling that steam with auxiliary water to be supplied to said hot water storage tank and recovering said condensed water, and a condensed-water supply path for supplying said condensed water recovered by said heat exchanger to said water storage tank.
A method of operating a fuel cell power generating system comprising a fuel cell unit having a coolant circulation system, a water storage tank for supply water to serve as coolant for said fuel cell unit, a water treatment system for purifying said supply water in said water storage tank and supplying said purified supply water as coolant to said fuel cell unit, a heating device for heating water, and a hot water storage tank for hot water acquired by said heating device, said method comprising the steps of:
- condensing steam from said hot water in said hot water storage tank;
- and
- supplying said water storage tank with condensed water obtained by condensing steam from said hot water in said hot water storage tank.
A fuel cell power generating system comprising:
- a fuel cell power generating equipment for generating power by reacting a fuel gas containing a hydrogen gas with an oxidizing gas electrochemically;
- a hot water storage tank for hot water heated by heat generated while power is generated by said fuel cell power generating equipment;
- and
- an auxiliary water supply path for supplying auxiliary water to said hot water storage tank,
- said fuel cell power generating equipment having a fuel cell stack, a coolant circulation path for regulating a temperature of said fuel cell stack, a heat exchanger for condensing steam in an exhaust gas discharged from said fuel cell stack and recovering said condensed water, water purifying equipment for purifying water recovered by said heat exchanger and supplying said purified water as coolant to said coolant circulation path, and a heating device for heating water to provide hot water using said coolant,
- wherein said heat exchanger is provided in said auxiliary water supply path, and condenses said steam in said exhaust gas by cooling said steam with said auxiliary water flowing in said auxiliary water supply path.
A method of operating a fuel cell power generating system comprising a fuel cell power generating equipment for generating power by reacting a fuel gas containing a hydrogen gas with an oxidizing gas electrochemically, a hot water storage tank for hot water heated by heat generated while power is generated by said fuel cell power generating equipment, and an auxiliary water supply path for supplying auxiliary water to said hot water storage tank, wherein
- said fuel cell power generating equipment has a fuel cell stack, a coolant circulation path for regulating a temperature of said fuel cell stack, a heat exchanger for condensing steam in an exhaust gas discharged from said fuel cell stack and recovering said condensed water, water purifying equipment for purifying supply water recovered by said heat exchanger and supplying said purified water as coolant to said coolant circulation path, and a heating device for heating water to provide hot water using said coolant, and
- said heat exchanger is provided in said auxiliary water supply path, and condenses said steam in said exhaust gas by cooling said steam with said auxiliary water flowing in said auxiliary water supply path.
Dependencies are inferred from the claim text.