Texts: Airbox orifice....mm Inclined manometer slope: 1.5
Atmospheric pressure, Pu: bar
Air box diameter: 300 mm
Item Motor speed 1, rpm, N1 Compressor speed 1, rpm, N2 Power input, watts Ambient temperature, T1 Stage 1 compressor outlet, T2 Water inlet, TW1 Water outlet, TW2 Air box manometer, mmH2O AP First stage inlet, kg/cm2, P First stage outlet, kg/cm2, P2 Water flow rate, 1/min
Test no 1 1300 650 930 17.5 77.6 19 19.4 20.4-10.4=10 101.3
Test 2 1500 752 1000 19.2 97.2 19.6 20.4 21.5-9.3=12.2 101.3
Calculate 5.1 Actual air flow rate (qv) 5.2 Swept volume, from the size of the cylinder and stroke of the piston in stage 1 and speed. 5.3 Electrical Power (EP), by installing a wattmeter on the motor. 5.4 Isentropic Power in kW. 5.5 Isothermal Power in kW 5.6 Isentropic Efficiency. 5.7 Isothermal efficiency. 5.8 Volumetric efficiency.