MECHENG 235 Lecture Notes - Mass Flow Rate, Air Compressor, Exhaust Gas
29 Apr 2014
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Me 235 thermodynamics i / winter 2014 / section 002. 7. 16 the shaft work in a pump to increase the pressure is small compared to the shaft work in an air compressor for the same pressure increase. 7. 19 in a heat pump that uses r-134a as the working fluid, the r-134a enters the compressor at 150 kpa, 10 c and the r-134a is compressed in an adiabatic process to 1 mpa using 4 kw of power input. Find the mass flow rate it can provide assuming the process is reversible. 7. 38 a small turbine delivers 1. 5 mw and is supplied with steam at 700 c, 2 mpa. The exhaust passes through a heat exchanger where the pressure is 10 kpa and exits as saturated liquid. Find the specific turbine work, and the heat transfer in the heat exchanger. 7. 41 a turbo charger boosts the inlet air pressure to an automobile engine.
