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The overall volume compression ratio of a reversed carnot cycle working with air as a refrigerant is 10. The temperature limits of the cycle are 40 degree C and 0 degree C. determine :
1. the pressure, volume and temperature at each point of the cycle,
2. the work done in the cycle
3. the refrigerating effect
4. the COP of the cycle
a steam turbine operates at steady state with inlet conditions of p1 5 bars t1 320degc. steam leaves the turbine at a
the diameter of the hollow core of a solid propellant grain remains axially uniform during burning. its length is 5 m
a hydraulic cylinder has a piston of cross sectional area 45cm2 and a constant working fluid pressure of 2.2mpa. the
The compression strength of Kevlar 49 fiber is about one-eight of its tensile stress. Estimate the smallest diameter of a rod on which 12 um diameter Kevlar fiber can be wound without causing kinks on its compression side.
a wind tunnel draws atmospheric air at 20c and 101.3 kpa by a large fan located at the exit of the tunnel. a if the air
a roughing section of a broach is to remove stock 3.2 mm deep from a steel surface205 mm long x 50 mm wide each tooth
air enters an adiabatic diffuser operating at steady state at 540 degrees r with a velocity of 600 fts and exits with a
two circus performers pyramus and thisbe. pyramus will swing back and forth with amplitude 8 on a trapeze bar that
helium in a steel tank is at 40 psia 540 r with a volume of 4 ft3. it is used to fill a balloon. when the tank pressure
a refrigerator operates on the ideal vapor compression refrigeration cycle with r-134a as the working fluid between the
as part of a heat treatment process cylindrical 304 stainless steel rods of 100-mm diameter are cooled from an initial
A steady flow air compressor compresses 50 lb/min from 14 psia and 80 degrees F to a discharge state at 45 psia and 300 degrees F. Heat departs from the air only via circulating water that enters the jacket at 75 degrees F and leaves at 95 degrees..
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