Generalized Performance Characteristics of Refrigeration and Heat Pump Systems

<table>Maximum coefficient of performance <svg height="6.6999998" id="M180" style="vertical-align:-0.10126pt" version="1.1" viewbox="0 0 10.9875 6.6999998" width="10.9875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,6.7)">
<g transform="translate(72,-66.64)">
<text transform="matrix(1,0,0,-1,-71.95,66.79)">
<tspan style="font-size: 11.21px; " x="0" y="0">𝑤</tspan>
</text>
</g>
</g>
</svg> versus the ratio of the reservoir temperatures (<svg height="15.025" id="M181" style="vertical-align:-3.75406pt" version="1.1" viewbox="0 0 70.5625 15.025" width="70.5625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,15.025)">
<g transform="translate(72,-59.98)">
<text transform="matrix(1,0,0,-1,-71.95,63.77)">
<tspan style="font-size: 11.21px; " x="0" y="0">𝑇</tspan>
</text>
<text transform="matrix(1,0,0,-1,-63.99,68.25)">
<tspan style="font-size: 7.85px; " x="0" y="0">∗</tspan>
<tspan style="font-size: 7.85px; " x="-1.8" y="8.1199999">𝐶</tspan>
</text>
<text transform="matrix(1,0,0,-1,-56.28,63.77)">
<tspan style="font-size: 11.21px; " x="0" y="0">=</tspan>
<tspan style="font-size: 11.21px; " x="10.782096" y="0">𝑇</tspan>
</text>
<text transform="matrix(1,0,0,-1,-39.32,60.97)">
<tspan style="font-size: 7.85px; " x="0" y="0">𝐶</tspan>
</text>
<text transform="matrix(1,0,0,-1,-32.93,63.77)">
<tspan style="font-size: 11.21px; " x="0" y="0">/</tspan>
<tspan style="font-size: 11.21px; " x="3.115824" y="0">𝑇</tspan>
</text>
<text transform="matrix(1,0,0,-1,-23.65,60.97)">
<tspan style="font-size: 7.85px; " x="0" y="0">𝐻</tspan>
</text>
</g>
</g>
</svg>) as derived from the FTT model. Plots are presented for different values of the heat leak.</table>

Physics Research International

fig8

Figure 8

Figure 8: Generalized Performance Characteristics of Refrigeration and Heat Pump Systems 