3) 3. Air is compressed, with a pressure ratio of 8, in a reversible compressor from 100 kPa and 300 K. a) If the compression takes place isentropically (k-1,4), how big is the compressor work per kilo of air?

b) How much does the work change in a) the information about the compressor compression takes place so that the temperature is kept constant at 300 K during the process? Explain the result using the flow work equation, and explain how the temperature can be kept constant and what then happens to the work that is fed to the compressor?

c) Calculate the net entropy change for the isothermal process when Character = 21 C? d) Draw the two processes, isentropic and isothermal, in a Pv diagram