Engineering, 28.11.2019 01:31 katey6934
To augment heat transfer between two flowing fluids, it is proposed to insert a 100-mm- long, 5-mm-diameter 2024 aluminum pin fin through the wall separating the two fluids, as seen in fig.1. the pin is inserted to a depth of d into fluid 1. fluid 1 is air with a mean temperature of 10°c and nearly uniform velocity of 10 m/s. fluid 2 is air with a mean temperature of 40°c and mean velocity of 3 m/s.
a) determine the rate of heat transfer from the warm air to the cool air through the pin fin for d=50 mm
b) plot the variation of the heat transfer rate with the insertion distance,
d. does an optimal insertion distance exist? t = 10°c, v = 10 m/s d-5 mm l = 100 mm 7.-40°c, v = 3 m/s
Answers: 1
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Engineering, 04.07.2019 18:20
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.
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Engineering, 04.07.2019 19:10
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Engineering, 04.07.2019 19:20
The quality is zero at a)-the saturated vapour state b)-the saturated liquid state c)-the saturated liquid-vapour mixture state d)-none of the states in the other answers
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To augment heat transfer between two flowing fluids, it is proposed to insert a 100-mm- long, 5-mm-d...
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