Optimal Performance of Endoreversible and Irreversible Atkinson Cycles with Non-ideal Gas Working Fluid
Based on the models established in previous literature,it further considers the non-ideal gas specific heat model,studies the optimal performances of endoreverisble and irreversible Atkinson cycles,and analyzes the effects of compression ratio(y),the maximum cycle temperature(T3),cylinder piston length(L),specific heat model,heat transfer loss(B),friction loss and internal irreversible loss on cycle power(P),efficiency(η),ecological function(E)and power density(Pd).The results show that curves P-γ,η-γ,E-γ and Pd-γ are all parabolic.There are optimal ys to maximize the four objective functions,respectively.For endoreversible cycle,with the increase of T3,the Pmax,ηmax,Emax and(Pd)max all increase;with the increase of B,the ηmax and Emax all decrease.For irreversible cycle,with the increases of the number of irreversible loss items,the Pmax,ηmax,Emax and(Pd)max all decrease;with the increase of T3,the Pmax,ηmax,Emax and(Pd)max all increase;with the increase of L,the Pmax,ηmax,Emu and(Pd)max all decrease.Comparing with the other two specific heat models,the Pmax,ηmax,Emax and(Pd)max of the two cycles with the non-ideal gas specific heat model are smaller.
万方数据
维普
