Exergy and Pinch Analysis of Diesel Engine Bottoming Cycles with Ammonia-Water Mixtures as Working Fluid

Authors : Maria JONSSON, Jinyue YAN

Pages : 57-71

View : 12 | Download : 11

Publication Date : 2000-06-01

Article Type : Research Paper

Abstract :In the present study, exergy and pinch analyses have been performed on ammonia-water and Rankine bottoming cycles for gas diesel engines. Gas diesel engines produce four waste heat streams at different temperature levels that can be used as heat sources by a bottoming cycle. The ammonia-water cycle has the potential to use these heat sources more efficiently than a Rankine cycle. The second law efficiency of the best ammonia-water cycle configuration is 43-48 % higher than the efficiency of a single-pressure Rankine cycle and 20-25 % higher than the efficiency of a dual-pressure Rankine cycle.  This paper was presented at the ECOS’00 Conference in Enschede, July 5-7, 2000
Keywords : Kalina cycle, bottoming cycle, diesel engine, ammonia water mixtures, exergy analysis, pinch analysis