SYSTEM FOR UTILIZING EXHAUST HEAT OF FUEL BATTERY AND CONTROL METHOD THEREFOR

摘要

PURPOSE:To avoid the redundant installation of cooling equipment and at the same time improve controllability of a refrigeration capacity in a system for utilizing the exhaust heat of a fuel battery in a single and double utility combined absorption type refrigerator. CONSTITUTION:A coolant guided into an evaporator 11 from the condenser 9 of an absorption type refrigerator 101 is controlled by bypassing to an absorber 10 on the basis of the temperature of water returned from a load to the evaporator 11. Thereby, when the load is smaller than the refrigeration ability, the refrigeration ability is controlled on quick response without controlling the heat of a driving heat source which is collected from a steam separator 2 in the cooling water system of a fuel battery body 1 and then brought into a high-temperature regenerator 7. The collection of condensed water required by a fuel battery 100 is performed by a low-temperature side exhaust heat collection heat exchanger 6 for collecting the low- temperature side exhaust heat from the fuel battery exhaust gas system to drive a low- temperature regenerator 8 and at the same time a condensed water collection heat exchanger 5 is provided in the exhaust gas system so as to obtain the necessary and sufficient amount of condensed water, and the cooling water to flow therethrough branches from the absorption type refrigerator cooling water circuit, so that the redundant installation of cooling equipment can be avoided.