عنوان مقاله English
نویسندگان English
In this paper a combined cooling heating and power system for using heat losses in PEM fuel cell has been proposed, present system can use for residential application. This system consists of PEM fuel cell, Heat storage tank, absorption chiller, hydrogen tank, air compressor and pump. Heat generated in fuel cell has been absorbed by a working fluid and a part of heat has been given to absorption chiller and another part has been given to heat storage tank. Modeling of this system has been done from four energy, exergy, FESR and CDER perspective. Fuel cell of this CCHP system generates 38.63 kW electrical power and 39.17 kW heat power. Energy efficiency of fuel cell singly is 37.21% but when heat storage tank and absorption chiller has been used for recovering waste heat, energy efficiency reaches to 68%. Maximum irreversibility loss occurs in fuel cell which is calculated 47.21 kW and absorption chiller irreversibility has been calculated 5.94 kW. From viewpoint of FESR and CDER in comparison with conventional systems, FESR and CDER are 34% and 25% respectively. Also analyzes had been showed that with increasing fuel cell operating pressure energy and exergy efficiency increased and by increasing high pressure of chiller COP decreased
کلیدواژهها English
