Engineering, 30.10.2019 05:31 brendaesme
Asteel ball of 20 mm diameter (k = 60 w/m·ºc, α = 177×10-6 m2 /s, rho = 7854 kg/m3 ) is dropped in a large tank of water. the sphere ball is initially isothermal at 360 k and drops until the center temperature is 320 k, and the temperature of the water is 280 k. the sphere ball may be assumed to quickly reach the terminal velocity of 1.3 m/s in the water. determine the height of the water tank required to cool the sphere ball to 320 k. use analytical one-term approximation method for the conduction heat transfer
Answers: 1
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Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
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Asteel ball of 20 mm diameter (k = 60 w/m·ºc, α = 177×10-6 m2 /s, rho = 7854 kg/m3 ) is dropped in a...
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