Engineering, 24.10.2021 14:00, ethangorrell67
A 1m3 tank contians air at 0.1MPa and 20 degree C. A high-pressure line is connected to the tank until the pressure reaches 2MPa. Assuming that the tank and the connecting valve are adiabatic, calculate the final temperature in the tank if the conditions in the high-pressure line remain constant at 2 MPa and 35 degree C. How much cooling to the tank is necessary to maintain the air temperature constant at 20 degree C. (Ideal Gas, Constant CP & CV , CP = 1.0035 kJ/(kg K) , CV = 0.7165 kJ/(kg K) )
Answers: 3
Engineering, 04.07.2019 18:10, lowkeyqueenk
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:20, kodyclancy
Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero
Answers: 2
A 1m3 tank contians air at 0.1MPa and 20 degree C. A high-pressure line is connected to the tank unt...
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