Engineering, 17.07.2019 20:30 vaeh41
Acircular steel cylinder of similar external and internal dimension to that in part (a) above, is now made by shrinking a cylinder of external diameter 0.2 m and internal diameter 0.1 m, onto an internal cylinder of similar material with external diameter 0.1 m and internal diameter 0.05 m. determine the radial pressure 'or' at the common surface due to shrinkage alone, so that when there is an internal pressure of 300 mn/m2, the maximum hoop stress σh in the inner cylinder is 150 mn/m2.
Answers: 3
Engineering, 04.07.2019 18:20, xcapo1x
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
Engineering, 04.07.2019 18:20, jessie8022
Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
Answers: 2
Acircular steel cylinder of similar external and internal dimension to that in part (a) above, is no...
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