DieselShip's Online Content Library

Q6. A single cylinder single acting air compressor has a bore of 268 mm and stroke of 535 mm with a clearance volume of 1.7 Liters.

Air is induced at a pressure and temperature of 1 bar and 27°C respectively.

The Law for both expansion and compression process is pV^1.3 C.

The temperature after compression is 225℃.

The compressor has a mechanical efficiency of 0.88 when delivering 650 kg/hr.

(a) Sketch the process on a p-V diagram, indicating ALL volumes.

(b) Calculate EACH of the following:

(i) the delivery pressure

(ii) The volumetric efficiency

(iii) The input power at full Load

(iv) The full load speed.

Note: for air R = 0.287 kJ/kgK