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A gas enters a compressor that provides a pressure ratio (exit pressure to inlet pressure) equal to 8. If a gage indicates the gas pressure at the inlet is 5.5 psig, what is the absolute pressure, in psia, of the gas at the exit?

Respuesta :

Answer:

[tex]P_2=160\ psia[/tex]

Explanation:

Given that

Pressure ratio ,r= 8

Gauge pressure at inlet = 5.5 psig

Lets take atmospheric pressure = 14.5 lbf/in²

The absolute presure at inlet

P₁ =5.5 + 14.5 psia

P₁= 20 psia

Lets take absolute pressure at the exit =P₂

[tex]r=\dfrac{P_2}{P_1}[/tex]

[tex]P_2=8\times 20\ psia[/tex]

[tex]P_2=160\ psia[/tex]

Therefore the absolute pressure at the exit will be 160 psia.

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