Question

Air enters a compressor at (10⁵ Pa) and (25°C) having a volume of (1.8 m³ /kg), is compressed to (5 × 10⁵ Pa) isothermally.

Determine: 

1) Work done

2) Change in internal energy

3) Heat transferred

Answer 1

1) The work done by an isothermal process is:

2) The change in internal energy for an isothermal process is:

△u = 0

3) For an isothermal process:

q = w = -289.7 kJ/kg