Heat recovery apparatus based on fuel cell and operating method thereof

摘要

Provided are a heat recovery apparatus based on a fuel cell and an operating method thereof. In the fuel cell-based heat recovery apparatus and the operating method thereof, hot water and steam may be generated by using heat generated while a molten carbonate fuel cell (MCFC) operates to supply the generated hot water or steam to buildings, thereby reducing a rate of operation in cooling/heating equipment using electricity so as to reduce air-conditioning costs.

主权项

1. A heat recovery apparatus comprising:
a first switching unit introducing heat generated by a molten carbonate fuel cell (MCFC) into a heat exchanger or blocking the introduction of the heat into the heat exchanger; a second switching unit directly discharging the heat to an outside of the heat recovery apparatus through a discharge hole or blocking the discharge of heat through the discharge hole; a third switching unit introducing a fluid stored in a condensed tank into a fluid circulating unit or blocking the introduction of the fluid into the fluid circulating unit; the fluid circulating unit circulating the fluid introduced by the third switching unit; a state sensing unit measuring a temperature of the heat generated by the MCFC, a flow rate within a tube through which the fluid passes, and a temperature and water level within the condensed tank; and a control unit controlling the first switching unit, the second switching unit, the third switching unit, the fluid circulating unit and the state sensing unit according to an operating or stopping algorithm, wherein the control unit is configured, when a standby state is performed, to open all the first and second switching units, close the first switching unit after a first predetermined time elapses, maintain the fluid circulating unit in a stopped state, and maintain the third switching unit in a closed state.