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a) A refrigeration system has a coefficient of performance of 5. The heat rejection is an isothermal process at 37 C. What is the minimum temperature of the cold reservoir, where the heat addition to the system occurs?
b) What would be the minimum temperature if the coefficients of performance is 6?
air enters an adiabatic nozzle steadily at 300 kpa 200degcand 28 ms and leaves at 100 kpa and 168 ms. the inlet area of
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a large tower is to be supported by a series of steel wires.it is estimated that the load on each wire will be 11100N. determine the minimum required wire diameter assuming a factor of safety of 2 and a yield strength of 1030MPa.
two m3 of xenonxe are contained in a closed rigid tank at 70 degree c and 2 bar. the tank is heated to a pressure of 10
a large number of concrete slabs each 0.6 m in length are lined up with a spacing of 0.1nbspmm between them. the
consider a household 120 v two-plug electric outlet protected by a 15 a circuit breaker. a you plug in a hair dryer and
a turbine produces 2 mw of power while accepting steam at 3 mpa and 400 c and rejecting steam at 50 kpa and 100c. find
determine if a simple supported w12 x 26 a36 steel beam has the capacity to support loads that produce 50ksi of
Is there a good calculation model for the material flow through a combine harvester related to the harvesting speed?
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