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Vinay Mishra
Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune
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Sanjay Krishna
Amrita School of Engineering (ASE), Vallikavu
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11 Other formulas that you can solve using the same Inputs

Power required to maintain pressure inside the cabin(excluding ram work)
Input Power=((Mass of air*Specific Heat Capacity at Constant Pressure*Actual temperature of Rammed Air)/(Compressor efficiency))*((Cabin Pressure/Pressure of rammed air)^((Heat Capacity Ratio-1)/Heat Capacity Ratio)-1) GO
Power required to maintain pressure inside the cabin(including ram work)
Input Power=((Mass of air*Specific Heat Capacity at Constant Pressure*Ambient air temperature)/(Compressor efficiency))*((Cabin Pressure/Atmospheric Pressure)^((Heat Capacity Ratio-1)/Heat Capacity Ratio)-1) GO
Mass of air to produce Q tonnes of refrigeration
Mass of air=(210*Tonnage of Refrigeration)/(1000*Specific Heat Capacity at Constant Pressure*(Temperature at the end of Isentropic Expansion-Actual exit Temperature of cooling turbine)) GO
Mass of air to produce Q tonnes of refrigeration
Mass of air=(210*Tonnage of Refrigeration)/(Specific Heat Capacity at Constant Pressure*(Inside temperature of cabin-Actual temperature at end of isentropic expansion)) GO
Refrigeration Effect Produced
Refrigeration Effect Produced=Mass of air*Specific Heat Capacity at Constant Pressure*(Inside temperature of cabin-Actual temperature at end of isentropic expansion) GO
Heat Absorbed during Constant pressure Expansion Process
Heat Absorbed=Specific Heat Capacity at Constant Pressure*(Temperature at the start of Isentropic Compression-Temperature at the end of Isentropic Expansion) GO
Heat rejected during cooling process
Heat Rejected=Mass of air*Specific Heat Capacity at Constant Pressure*(Actual end temp of isentropic compression-Temperature at the end of cooling process) GO
Expansion Work
Work =Mass of air*Specific Heat Capacity at Constant Pressure*(Temperature at the end of cooling process-Actual temperature at end of isentropic expansion) GO
Power required for refrigeration system
Input Power=(Mass of air*Specific Heat Capacity at Constant Pressure*(Actual end temp of isentropic compression-Actual temperature of Rammed Air))/60 GO
Heat Rejected during Constant pressure Cooling Process
Heat Rejected=Specific Heat Capacity at Constant Pressure*(Ideal temp at end of isentropic compression-Ideal temp at the end of isobaric cooling) GO
Compression Work
Work =Mass of air*Specific Heat Capacity at Constant Pressure*(Actual end temp of isentropic compression-Actual temperature of Rammed Air) GO

2 Other formulas that calculate the same Output

Specific gas constant using kinetic energy per mole
Specific gas constant=(2/3)*Kinetic energy per mole/Temperature of Gas GO
Specific Gas Constant
Specific gas constant=[R]/Molar Mass of a chemical compound GO

Mayer's formula Formula

Specific gas constant=Specific Heat Capacity at Constant Pressure-Specific Heat Capacity at Constant Volume
R=C<sub>p</sub>-C<sub>v</sub>
More formulas
Speed of Sound GO
Mach Number GO
Mach Angle GO
Stagnation Temperature GO
Thermal resistance for conduction through 2 resistances in parallel GO
Isentropic compressibility for given density and speed of sound GO

Who proposed Mayer's formula?

Julius Robert von Mayer (25 November 1814 – 20 March 1878) proposed Mayer's formula. He was a German physician, chemist, and physicist and one of the founders of thermodynamics.

How to Calculate Mayer's formula?

Mayer's formula calculator uses Specific gas constant=Specific Heat Capacity at Constant Pressure-Specific Heat Capacity at Constant Volume to calculate the Specific gas constant, Mayer's formula relates the specific gas constant to the specific heat for a calorically perfect gas and specific heat for a thermally perfect gas. Specific gas constant and is denoted by R symbol.

How to calculate Mayer's formula using this online calculator? To use this online calculator for Mayer's formula, enter Specific Heat Capacity at Constant Pressure (Cp) and Specific Heat Capacity at Constant Volume (Cv) and hit the calculate button. Here is how the Mayer's formula calculation can be explained with given input values -> 3 = 8-5.

FAQ

What is Mayer's formula?
Mayer's formula relates the specific gas constant to the specific heat for a calorically perfect gas and specific heat for a thermally perfect gas and is represented as R=Cp-Cv or Specific gas constant=Specific Heat Capacity at Constant Pressure-Specific Heat Capacity at Constant Volume. Specific heat capacity at constant pressure means the amount of heat that is required to raise the temperature of a unit mass of gas by 1 degree at constant pressure and Specific heat capacity at constant volume means the amount of heat that is required to raise the temperature of a unit mass of gas by 1 degree at constant volume.
How to calculate Mayer's formula?
Mayer's formula relates the specific gas constant to the specific heat for a calorically perfect gas and specific heat for a thermally perfect gas is calculated using Specific gas constant=Specific Heat Capacity at Constant Pressure-Specific Heat Capacity at Constant Volume. To calculate Mayer's formula, you need Specific Heat Capacity at Constant Pressure (Cp) and Specific Heat Capacity at Constant Volume (Cv). With our tool, you need to enter the respective value for Specific Heat Capacity at Constant Pressure and Specific Heat Capacity at Constant Volume and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Specific gas constant?
In this formula, Specific gas constant uses Specific Heat Capacity at Constant Pressure and Specific Heat Capacity at Constant Volume. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Specific gas constant=[R]/Molar Mass of a chemical compound
  • Specific gas constant=(2/3)*Kinetic energy per mole/Temperature of Gas
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