Title :
A study of heat recovery from fuel cell exhaust gas for telecommunications equipment cooling
Author :
Oshima, Kazuo ; Uekusa, Tsuneo ; Ichimura, Masahiro ; Koyashiki, Tohru
Author_Institution :
NTT Corp., Tokyo, Japan
Abstract :
Heat recovery methods and the amount of heat that can be recovered from fuel cell exhaust gas are described. The cooling performance of an absorption refrigerator that uses fuel cell waste heat is also described. Two heat recovery methods from the exhaust gas are considered. One uses heat recovery from mixed exhaust gas from the cathode side of the cells and the reformer (mixed type); the other uses separate heat recovery from these sites (separate type). Simulation shows that the amount of heat recovered between 60 and 75°C with the separate type of heat recovery is greater than with the mixed type of heat recovery. The cooling capacity of the refrigerator using the separate type of heat recovery and recovering heat between 65 and 85°C is about 2.5 times that of one using a generator (heat source) with a constant 85°C temperature
Keywords :
cooling; fuel cells; refrigeration; refrigerators; telecommunication equipment; 60 to 75 degC; 65 to 85 degC; absorption refrigerator; cathode; cooling; fuel cell exhaust gas; heat recovery; performance; telecommunications equipment; Absorption; Cathodes; Communication switching; Cooling; Fuel cells; Heat recovery; Refrigeration; Space heating; Waste heat; Water heating;
Conference_Titel :
Telecommunications Energy Conference, 1991. INTELEC '91., 13th International
Conference_Location :
Kyoto
Print_ISBN :
0-87942-670-5
DOI :
10.1109/INTLEC.1991.172424