4Jung Dongsoo,et al.A study on the performance of multi-stage condensation heat pumps[J].International Journal of Refrigeration,November 1, 2000,23:528-539.
5JAMEEL-UR-REHMAN KHAN,SYED M ZUBAIR.Design and rating of a two-stage vapor-compression refrigeration system[J].ENERGY,1998, 23(10):867-878.
6Jung Dongsoo,Lee Yoonhak.A study on the performance of multi-stage condensation heat pumps[J].International Journal of Refrigeration,2000,23(7) :528-539.
7Khan Jameel-UR-Rehman,Zubair Syed M.Design and rating of a two-stage vapor-compression refrigeration system[J].Energy,1998,23(10) :867-878.
8Hiromi Hasegawa.Development of two-stage compression and cascade heating heat pump system for hot water supply[G]//ASHRAE Trans,1996,102(1) :248-254.
