Engineering, 06.12.2019 02:31 AdoNice
Ashell-and-tube heat exchanger is used for heating 14 kg/s of oil (cp = 2.0 kj/kg·k) from 20°c to 46°c. the heat exchanger has one shell pass and six tube passes. water enters the shell side at 80°c and leaves at 60°c. the overall heat transfer coefficient is estimated to be 1000 w/m2 ·k. calculate the rate of heat transfer and the heat transfer area.
Answers: 2
Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
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Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 19:10
Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m
Answers: 1
Ashell-and-tube heat exchanger is used for heating 14 kg/s of oil (cp = 2.0 kj/kg·k) from 20°c to 46...
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