Kong, X.Q.; Zhang, D.; Li, Y.; Yang, Q.M. - In: Energy 36 (2011) 12, pp. 6830-6838
A direct-expansion solar-assisted heat pump water heater (DX-SAHPWH) is described, which can supply hot water for domestic use during the whole year. The system mainly employs a bare flat-plate collector/evaporator with a surface area of 4.2 m2, an electrical rotary-type hermetic compressor, a...