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Compression or Expansion Ratio Formula

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Compression or Expansion Ratio is the ratio of the volume of air before compression or expansion to the volume after compression or expansion in air refrigeration. Check FAQs

r p = \frac{P 2}{P 1}

r_p - Compression or Expansion Ratio?P₂ - Pressure at End of Isentropic Compression?P₁ - Pressure at Start of Isentropic Compression?

Compression or Expansion Ratio Example

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Here is how the Compression or Expansion Ratio equation looks like with Values.

Here is how the Compression or Expansion Ratio equation looks like with Units.

Here is how the Compression or Expansion Ratio equation looks like.

25 = \frac{1E+7}{400000}

25 = \frac{1E+7Pa}{400000Pa}

25 = \frac{1E+7}{400000}

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Compression or Expansion Ratio Solution

Follow our step by step solution on how to calculate Compression or Expansion Ratio?

FIRST Step Consider the formula

r p = \frac{P 2}{P 1}

Next Step Substitute values of Variables

∴

r p = \frac{1E+7Pa}{400000Pa}

Next Step Prepare to Evaluate

∴

r p = \frac{1E+7}{400000}

LAST Step Evaluate

∴

r p = 25

Compression or Expansion Ratio Formula Elements

Variables

Compression or Expansion Ratio

Compression or Expansion Ratio is the ratio of the volume of air before compression or expansion to the volume after compression or expansion in air refrigeration.

Symbol: r_p

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Compression or Expansion Ratio

Pressure at End of Isentropic Compression

Pressure at End of Isentropic Compression is the final pressure achieved at the end of the isentropic compression process in an air refrigeration system.

Symbol: P₂

Measurement: PressureUnit: Pa

Note: Value can be positive or negative.

Formulas to find Pressure at End of Isentropic Compression

Pressure at Start of Isentropic Compression

Pressure at Start of Isentropic Compression is the initial pressure of the refrigerant at the beginning of the isentropic compression process in an air refrigeration system.

Symbol: P₁

Measurement: PressureUnit: Pa

Note: Value can be positive or negative.

Formulas to find Pressure at Start of Isentropic Compression

Other formulas in Air Refrigeration Cycles category

Go Energy Performance Ratio of Heat Pump

COP theoretical = \frac{Q delivered}{W per min}

Go Relative Coefficient of Performance

COP relative = \frac{COP actual}{COP theoretical}

Go Theoretical Coefficient of Performance of Refrigerator

COP theoretical = \frac{Q ref}{w}

Go COP of Bell-Coleman Cycle for given Compression Ratio and Adiabatic Index

COP theoretical = \frac{1}{{r p}^{\frac{γ - 1}{γ}} - 1}

How to Evaluate Compression or Expansion Ratio?

Compression or Expansion Ratio evaluator uses Compression or Expansion Ratio = Pressure at End of Isentropic Compression/Pressure at Start of Isentropic Compression to evaluate the Compression or Expansion Ratio, Compression or Expansion Ratio formula is defined as the ratio of the discharge pressure to the suction pressure of a refrigerant in a refrigeration system, used to measure the performance of a compressor or an expander in refrigeration and air conditioning systems. Compression or Expansion Ratio is denoted by r_p symbol.

How to evaluate Compression or Expansion Ratio using this online evaluator? To use this online evaluator for Compression or Expansion Ratio, enter Pressure at End of Isentropic Compression (P₂) & Pressure at Start of Isentropic Compression (P₁) and hit the calculate button.

FAQs on Compression or Expansion Ratio

What is the formula to find Compression or Expansion Ratio?

The formula of Compression or Expansion Ratio is expressed as Compression or Expansion Ratio = Pressure at End of Isentropic Compression/Pressure at Start of Isentropic Compression. Here is an example- 25 = 10000000/400000.

How to calculate Compression or Expansion Ratio?

With Pressure at End of Isentropic Compression (P₂) & Pressure at Start of Isentropic Compression (P₁) we can find Compression or Expansion Ratio using the formula - Compression or Expansion Ratio = Pressure at End of Isentropic Compression/Pressure at Start of Isentropic Compression.

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Compression or Expansion Ratio Formula

Compression or Expansion Ratio Example

Compression or Expansion Ratio Solution

Compression or Expansion Ratio Formula Elements

Other formulas in Air Refrigeration Cycles category

How to Evaluate Compression or Expansion Ratio?

FAQs on Compression or Expansion Ratio

Variable Name