6YOUNG D J. Development of a northern climate resi dential air-source heat pump [ J ]. ASHRAE Transac tion, 1980, 86:65 - 70.
7GOLDSCHMIDT V W, NGUYEN H, SCHARD R R R, et aL Reverse valve leakage rates and impacts in system performance [ C ]//Proceedings of the 6th Heat Pump Technology Conference. Oklahoma: Oklahoma State U- niversity, 1982 : 1 - 8.
8GOLDSCHMIDT V W, SCHARF R R R, WHITE L. Measurement of refrigerant leakage in reversing valves [J]. ASHRAE Transaction, 1984, 90:36 -41.
9DAMASCENO G, LEE W, WHITE L, et al. Heat trans-fer pressure drop and leakage in reversing valves charac terizing parameters [ J ]. ASHRAE Transaction, 1986, 92:61 -70.
10DAMASCENO G D S, LEE W N T, ROOKE S,P, et al. Performance of heat pump reversing valves and compari son through characterizing parameters [ J ]. ASHRAE Transaction, 1988, 94:50 - 56.
