Research and development of new type finned dual-source (duplex channel) heat exchanger

Proposes the concept of dual-source (duplex channel). Analyses the feasibility of dual-source heat exchanger. Designs a new type of finned dual-source (duplex channel) heat exchanger. Studies the manufacturing process, the performance parameters, the maximum efficiency of compound heat transfer temperature difference and the heat exchange efficiency of the heat exchanger and achieves the dual-source compound use in duplex channel. Studies the thermal efficiency of the dual-source heat pump unit under various working conditions and different operating modes and analyses the effective experimental data. The results show the thermal efficiency of new type finned dual-source (duplex) can be improved to as high as 85% within the scope of the effective temperature difference.