Chemical engines process mass flow to convert the differences in chemi
cal potentials into work. An isothermal endoreversible chemical engine
, in which the sole irreversibility is finite-rate mass transfer, is m
odeled in this paper. The power versus efficiency relationships of the
chemical engine, using the analogous method of finite-time thermodyna
mics for a heat engine, are derived. The performance comparison betwee
n a heat engine and a chemical heat engine is presented. Published by
Elsevier Science Ltd.