Day 9 - Air Compressor

Single Stage: Compression Process 1 - 2

Single Stage: Compression Process 2 - 3

Single Stage: Piston Displacement: Single Acting

Vd = V1 - V3

Single Stage: Piston Displacement: Double Acting

Vd = V1 - V3

Single Stage: Capacity of Compressor

Single Stage: Volumetric Efficiency

Single Stage: Compressor Power

Single Stage: n or k

n = k = 1.4

Single Stage: Compressor Efficiency

Single Stage: Piston Speed

Single Stage: Work when Isentropic, Polytropic, and Isothermal

Adiabatic Compressor Efficiency:

n_c = Isentropic Work / Fluid Work

General Compressor: Work

n_s = stage

P2 = discharge

General Compressor: Intercooler Pressure

General Compressor: r

r = n_s - 1

General Compressor: Heat Rejected

Use Cp of air

General Compressor: Intercooler Temp

General Compressor: Psaved

Psaved = Wc1 - Wc2

Ideal Indicated Power

IP = MEPi x Vd

Three Stage: Intercooler Pressure Relation

Pi1 / P1 = Pi2 / Pi1 = P2 / Pi2

Mass of Air

m_a = P1V1 / RT1