Atmospheric air at 100 kpa, 17 c is compressed to 400 kpa after which it is expanded through a nozzle back to the atmosphere. the processes in the compressor and the nozzle are both reversible and adiabatic and kinetic energy in and out of the compressor can be neglected. find the specific work of the compressor and its exit temperature and find the nozzle exit velocity.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor