2Chaturvedi SK, Chert DT, Kheireddine A. Thermal performance of a variable capacity direct expansion solar-assisted heat pump [ J ]. Energy Conversion and Management, 1998,39(3 ~ 4) : 181 - 191.
3Aziz W, Chaturvedi SK, Kheireddine A. Thermodynamic analysis of two-component, two-phase flow in solar collectors with application to a direct-expansion solar-assisted heat pump [ J ]. Energy, 1999,24 ( 3 ) : 247 -259.
4Hawlader MNA, Chou SK, Ullah MZ. The performance of a solar assisted heat pump water heating system [ J ]. Applied Thermal Engineering, 2001,21(10) : 1049 - 1065.
5Kuang YH, Sumathy, K, Wang RZ. Study on a direct-expansion solar-assisted heat pump water heating system [ J ]. International Journal of Energy Research,2003,27(5) :531 - 548.
6Chyng JP, Lee CP, Huang BJ. Performance analysis of a solar-assisted heat pump water heater[ J]. Solar Energy, 2003,74( 1 ) : 33 - 44.
7Freeman T L,Mitchell J W,Audit T E.Performance of combined solar-heat pump systems[J].Solar Energy,1979,22:125-135.
8Day A R,Karayiannis T G.Solar-assisted heat pump research and development[J].Building Service Engineering Research& Technology,1994,15(2):71-80.
9Chaturvedi S K,Chen D T,Kheireddine A.Thermal performance of a variable capacity direct expansion solar-assisted heat pump[J].Energy Conversion & Management,1998,39(3/4):181-191.