HIGH EFFICIENCY FUEL CELL SYSTEM SUPPRESSING VARIATION IN POWER CONSUMPTION, ITS CONTROLLING METHOD AND BUILDING STRUCTURE

摘要

A fuel cell system capable of being driven continuously at high efficiency while suppressing variation in power consumption of the entire system. The fuel cell system comprises a fuel cell, a power load which operates using the power generated by the fuel cell, a demand control section for transmitting power demand information in advance when it is necessary to increase the power consumption of the power load, a fuel cell control section for transmitting a notice of permitting increase in power consumption on condition that the fuel cell can supply more power to the power load upon receiving the demand information from the demand control section, and a heating unit for heating water using the excess power generated by the fuel cell. The fuel cell control section balances the power demand and the heat demand by driving the heating unit using power when heat is deficient as compared with power.