摘要
本文导出了非线性传热q(T_R,T_w)=a(T_w^(-1)-T_R^(-1))情况下内可逆三热源热泵的最佳供热系数与供热率间的关系:当ψ<1时,有π=αψ[T_p(T_H-T_o)-T_H(T_p-T_o)ψ]/(4T_HT_pT_o);当ψ>1时,有π=a[T_p(T_H-T_o)/ψ-T_H(T_p-T_o)]/(4T_HT_pT_o)。并证明,当T_p>2T_HT_o/(T_H+T_o)时,最大供热率对应的最佳供热系数为ψ_m=T_p(T_H-T_o)/[2T_H(T_p-T_o)];当T_P≤2T_HT_o/(T_H+T_o)时,最佳热系数是供热率的单调减函数。
The relation between optimal performance coefficient and the rate of heating of a endoreversible three source heat pump with the nonlinear heat transfer condition q(Tw,' TR)= α(Tw-1-TR-1) is derived and giren by the expression π=αψ[Tp(TH- TO) -TH(TP-TIO)ψ]/(4THTPTO) when ψ<1. and π=α[TP(TH-TO)ψ-1-TH(TP-TO)] /(4THTPTO) when ψ>1. It is shown that the performance coefficient at maximum rate of heating is given by the expression ψm = TP(TH- TO)/[2TH(TP- TO)] when TP>2THTO/(TH + TO). However, when TP≤2THTO(TH + TO), the optimal performance coefficient is a monotomic decrease function of the rate of heating.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
1990年第3期319-323,共5页
Acta Energiae Solaris Sinica
