Effects of Ambient Parameters on the Performance of a Direct-Expansion Solar-Assisted Heat Pump with Bare Plate Evaporators for Space Heating

<div>Variation of COP with the ambient temperature of 5°C, 10°C, and 15°C.</div>

International Journal of Photoenergy

fig4

Figure 4

Figure 4: Effects of Ambient Parameters on the Performance of a Direct-Expansion Solar-Assisted Heat Pump with Bare Plate Evaporators for Space Heating 

Figure 4 | Effects of Ambient Parameters on the Performance of a Direct-Expansion Solar-Assisted Heat Pump with Bare Plate Evaporators for Space Heating 