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The compressor in a refrigerator compresses satu- rated r-134a vapor at 0°f to 200 psia. calculate the work required by this compressor, in btu/lbm, when the compres- sion process is isentropic.

Respuesta :

The work required is W =  20.2 BTU per lbm

The value of entropy & enthalpy at initial conditions are

[tex]$\begin{aligned}&h_{1}=103.1 \\&\mathrm{~S}=0.225\end{aligned}$[/tex]

Final enthalpy

[tex]$h_{2}=123.3$[/tex]

Therefore work done

[tex]$\begin{aligned}&\mathrm{W}=h_{1}-h_{2} \\&\mathrm{~W}=103.1-123.3 \\&\mathrm{~W}=-20.2 \text { BTU per Ibm }\end{aligned}$[/tex]

Therefore the work required is [tex]$\mathrm{W}=20.2 \mathrm{BTU}$[/tex]per Ibm

What is Compressor?

  • A compressor uses mechanical mechanisms to reduce a certain volume in order to boost air pressure.
  • The compressor is frequently employed in steam power plants, refrigerators, and diesel locomotives.
  • A compressor is a mechanical device that lowers a gas's volume while raising its pressure.
  • One particular kind of gas compressor is an air compressor. Pumps and compressors have characteristics in that both raise the pressure on a fluid and may move it via a pipe.

To learn more about compressor visit:

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