1. The problem statement, all variables and given/known data I have a CAES system that takes air at a pressure of 102.2kPa and temp of 24 degrees C. It is compressed to 85 bar adiabatically at a rate of 168 kg/s. I know that Cp = 1.005 kJ/kgK and Cv = 0.718 kJ/kgK. The question is - determine the amount of work consumed by the compressor in kWh. 2. Relevant equation Unsure 3. The attempt at a solution Totally lost with this question, attempted a solution using -w = (h2-h1) and then U = Q + w, but i dont think i have the required values for that. Any help at all is greatly appreciated.