Co-generation system

The systematic numerical simulation program is developed to calculate the total energy efficiency of housing polymer electrolyte fuel cell co-generation system (PEFC-CGS) which is combined with hot water floor heating (HWFH). This simulation program can also predict actual building physics of heat transfer such as mutual radiant heat among interior surfaces and thermal strage relating with piping pitch of hot water and so on. The indoor temperature can be controlled by PMV (Predicted Mean Vote) to take account of thermal sensing affected radiant heat.

The results of a case study are presented focusing on efforts to conserve energy in an existing cityblock by physically connecting a number of existing buildings with pipes and cables and aCogeneration System (CGS), and then exchange energy among the buildings using the CGS andexisting heat source equipment. Essentially, the proposed system levels-out and reduces variation inthe combined inter-building energy load among the buildings with a variety of energy use profiles.

For reduction of Green house Gas emission, Polymer Electrolyte Membrane Fuel Cells (PEFC) ispromoted by the government in Japan as more efficient co-generation system(CGS). On this study forthe purpose of finding the efficient energy supply system with PEFC in the apartment house, first theauthor proposed PEFC Apartment House as more efficient system than the current one (boiler andelectric power), which consists of PEFC-CGS, thermal storage tanks, power network and managementsystem.