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For the shortcoming of air source heat pump in heating condition, a composite heat exchanger was designed which integrates fin tube and tube heat exchanger, and it can achieve synchronous and composite heat exchange in one heat exchanger between working fluids, gaseous and liquid heat source. With the above composite heat exchanger as the core component, the Solar Air Composite Heat Source Heat Pump...
Among various thermoelectric (TE) materials, iron disilicide (FeSi 2 ) has relatively low cost and non-toxic characteristics which make it appropriate for large scale applications. To enhance the dimensionless figure of merit (ZT) of this material, a composite of FeSi 2 –Si 0.8 Ge 0.2 with high fraction of α-FeSi 2 was prepared by mechanical alloying and sintering...
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