کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
245268 | 501983 | 2007 | 15 صفحه PDF | دانلود رایگان |
Optimal configuration of a class of endoreversible heat-engines, with fixed duration and subject to the radiative heat-transfer law q ∝ Δ(T4), has been determined. The optimal cycle that maximizes the power output of the engine has been obtained using optimal-control theory, and the differential equations are solved by a Taylor-series expansion. It is shown that the optimal cycle has six branches, including two isothermal branches and four maximum-power branches, without adiabatic branches. The interval of each branch has been obtained, as well as the solutions of the temperatures of the heat reservoirs and working fluid. A numerical example is given. The results are compared with those obtained using the Newton’s heat-transfer law for maximum power output and those using a linear phenomenological heat-transfer law for maximum power output.
Journal: Applied Energy - Volume 84, Issue 4, April 2007, Pages 374–388