MECHENG 235 Lecture Notes - Lecture 6: Air Compressor, Heat Capacity, Mass Flow Rate
29 Apr 2014
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Me 235 thermodynamics i / winter 2014 / section 002. 4. 19 an airport ventilation system takes 2. 5 m3/s air at 100 kpa, 17 c into a furnace and heats it to 52 c and delivers the flow to a duct with cross-sectional area 0. 4 m2 at 110 kpa. 4. 22 a diffuser receives 0. 1 kg/s steam at 500 kpa, 350 c. The exit is at 1 mpa, 400 c with negligible kinetic energy and the flow is adiabatic. Find the diffuser inlet velocity and the inlet area. 4. 35 carbon dioxide used as a natural refrigerant flows out of a cooler at 10 mpa, 40 c after which it is throttled to 1. 4 mpa. Find the state (t, x) for the exit flow. 4. 43 a windmill with rotor diameter of 20 m takes 40% of the kinetic energy out as shaft work on a day with 20 c and wind speed of 35 km/h.
