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本文导出工质与三个热源间的传热系数分别为。α、β和γ,传热规律为q~∝△(T~(-1))时,内可逆三热源热泵的最佳供热系数ψ与供热率Π间的关系:ψ<1时,Π=K_1ψ[T_p(T_H-T_ο)-T_H(T_p-Tο)ψ]/[T_HT_pT_ο(1-△_1ψ)~2];ψ>1时,Π=K_2ψ[T_p(T_H-T_ο)-T_H(T_P-T_ο)ψ]/[T_HT_pT_ο(△_2-ψ)~2];式中,K_1=αγ/(α~(1/2)+γ~(1/2))~2,K_2=βγ/(β~(1/2)+γ~(1/2))~2,△_1=(α/β)~(1/2)(β~(1/2)-r~(1/2)/(α~(1/2)+γ~(1/2)),△_2=(β/α)~(1/2)(α~(1/2)-γ~(1/2))/(β~(1/2)+γ~(1/2))。由此可得许多有用的关系。
In this paper, the heat transfer coefficients between working fluid and three heat sources are derived respectively. α, β and γ, and the heat transfer law is q ~ α △ (T ~ (-1)), the relationship between the optimal heating coefficient ψ and the heat supply rate Π of the endoreversible three heat pump: ψ <1, Π = K_1ψ [T_p (T_H-T_o) -T_H (T_p-T o) ψ] / [T_HT_pT_o (1- △ _1ψ) ~ 2]; when ψ> 1, Π = K_2ψ [T_p (T_H-T_o) -T_H K 2 = βγ / (α ~ (1/2) + γ ~ (1/2)) ~ 2, and K_2 = βγ / T_HT_pT_o (Δ_2 - ψ) (β ~ (1/2) + γ ~ (1/2)) ~ 2, △ _1 = (α / β) ~ (1/2) / (α ~ (1/2) + γ ~ (1/2)), Δ_2 = (β / α) ~ (1/2) / (β ~ (1/2) + γ ~ (1/2)) There are many useful relationships.