Engineering, 17.07.2019 22:20 gonzalesrosalinda66
Arefrigerator operating on the vapor-compression refrigeration cycle using refrige the refrigerant is considered. the temperature of the cooled space and the ambient a 13°c and 27°c, and leaves at 1 mpa and 70°c. the refrigerant leaves the condenser as saturated liquid. the rate of cooling provided by the system is 13 kw determine ir are at respectively. r-134a enters the compressor at 140 kpa as a saturated vapour a) the mass flow rate of r-134a and the cop b) the exergy destruction in each component of the cycle and the second law eficingy of the compressor, and c) the second law efficiency of the cycle and the total exergy destruction in the cycle
Answers: 2
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Arefrigerator operating on the vapor-compression refrigeration cycle using refrige the refrigerant i...
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