An Evaluation Study of the Reduction Effects of the CO₂ Emission Quantity and the Primary Energy in the Residential PEFC Co-generation System

Abstract

This paper deals with the introduction effects on the basis of the comparative study of residential PEFC (polymer electrolyte fuel cell) co-generation systems and conventional systems that consist of a conventional gas boiler or a condensing gas boiler or a CO₂ heat pump and the thermal power plant, by using the computer simulation. The target systems for estimation conform to real systems in the market and the energy demand data acquired from the past field tests was applied. As a result, it becomes clear that the residential PEFC co-generation systems have high performance in the energy saving and the CO₂ reduction, from a comparison study with conventional systems and CO₂ heat pump system. Concretely to say, the average energy saving rate that the residential PEFC co-generation system provides is 13.9% and the average CO₂ reduction rate is 16.5% using quantity of reduction of CO₂ as estimate function. Otherwise, the average energy saving rate that the CO₂ heat pump system provides is 13.7% and the average CO₂ reduction rate is 10.0%. Furthermore, we have proved the effectiveness a radiator in the residential PEFC co-generation system.