Engineering, 03.04.2020 04:15, aidanfbussiness
Forced air at T= 25ºC and V= 12 m/s is used to cool electronic elements on a circuit board. One such element is a chip, 4 mm ×4 mm, located 120 mm from the leading edge of the board. Experiments have revealed that flow over the board is disturbed by the elements and that convection heat transfer is correlated by an expression of the form Nµx= 0.04 Rex^0.85. Pr^1/3. Required:Estimate the surface temperature of the chip if it is dissipating 30 mW.
Answers: 1
Engineering, 04.07.2019 18:10, QueenLife4869
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
Engineering, 04.07.2019 18:20, rhussein6452
Wiy doeres rere okhn a pump whon working betwon the same pressure range?
Answers: 2
Forced air at T= 25ºC and V= 12 m/s is used to cool electronic elements on a circuit board. One such...
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