Engineering, 17.04.2020 03:37 toxsicity
A thin-walled, uninsulated 0.4 m diameter duct is used to route chilled air at 0.07 kg/s through the attic of a large commercial building. The attic air is at 37oC, and natural circulation provides a convection coefficient of 4 W/m2K at the outer surface of the duct. If chilled air enters a 16 m long duct at 7oC, what is its exit temperature and the rate of heat gain? Properties of the chilled air may be evaluated at an assumed average temperature of 300 K.
Answers: 2
Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:20
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
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Engineering, 04.07.2019 18:20
Air flows over a heated plate Γ t a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
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Engineering, 04.07.2019 19:10
A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.
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A thin-walled, uninsulated 0.4 m diameter duct is used to route chilled air at 0.07 kg/s through the...
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