The COP of the heat pump in the dual-energy complementary system is improved; <br>the heat collected by the collector has obvious seasonal differences; <br>the heat collected by the typical day 2 is about twice that of the typical day 1;
Dual energy complementary system heat pump COP improvement;<br>The seasonal differences in heat collection of collectors are significant;<br>The heat collection of typical day 2 is about twice that of typical day 1;
COP improvement of heat pump with dual energy complementary system;<br> The seasonal difference of heat collection capacity of collector is obvious;<br> The heat collection of typical day 2 is about twice that of typical day 1;