Effects of Pressure Drops on the Performance Characteristics of Air Standard Otto Cycle

<table>Power output relative to its maximum value versus efficiency for the reversible adiabatic model. Plots are shown for different values of the pressure drop coefficient (<svg height="10.9125" id="M109" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 14.9 10.9125" width="14.9" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.9125)">
<g transform="translate(72,-63.27)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑒</tspan>
<tspan style="font-size: 12.50px; " x="5.5638351" y="0">3</tspan>
</text>
</g>
</g>
</svg>) at the hot side. The maximum efficiency is reduced but at zero maximum power production. Plots are shown for different values: <svg height="13.0125" id="M110" style="vertical-align:-1.76814pt" version="1.1" viewbox="0 0 116.3375 13.0125" width="116.3375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.0125)">
<g transform="translate(72,-61.59)">
<text transform="matrix(1,0,0,-1,-71.95,63.4)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑒</tspan>
<tspan style="font-size: 12.50px; " x="5.5638351" y="0">3</tspan>
<tspan style="font-size: 12.50px; " x="15.278666" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="27.319056" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="33.570557" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="36.696304" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="42.947803" y="0">,</tspan>
<tspan style="font-size: 12.50px; " x="52.325054" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="58.576553" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="61.702305" y="0">8</tspan>
<tspan style="font-size: 12.50px; " x="67.953804" y="0">,</tspan>
<tspan style="font-size: 12.50px; " x="77.331055" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="83.582558" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="86.708305" y="0">6</tspan>
</text>
</g>
</g>
</svg>.</table>

Physics Research International

fig6

Figure 6

Figure 6: Effects of Pressure Drops on the Performance Characteristics of Air Standard Otto Cycle 