Can anyone help me with this heat transfer question. Just 7-83 d85°F20 ft/s1.5 kWresistanceheaterFIGURE P7-82E7-83 A 0.4-W cylindrical electronic component with diam-eter 0.3 cm and length 1.8 cm and mounted on a circuit boardis cooled by air flowing across it at a velocity of 240 m/min.If the air temperature is 35°C, determine the surface tempera-ture of the component. For air properties evaluations, assume afilm temperature of 50°C. Is this a good assumption?7-84 Consider a 50-cm-diameter and 95-cm-long hot watertank. The tank is placed on the roof of a house. The waterinside the tank is heated to 80°C by a flat-plate solar collectorduring the day. The tank is then exposed to windy air at 18°C

Given: Q=0.4 W d=0.3 cm L=1.8 cm v=240 m/min air temp=35oC To determine: Surface temperature

Answered: etermine the surface tem

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etermine the surface tem

Elements Of Electromagnetics

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ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

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Can anyone help me with this heat transfer question. Just 7-83

d
85°F
20 ft/s
1.5 kW
resistance
heater
FIGURE P7-82E
7-83 A 0.4-W cylindrical electronic component with diam-
eter 0.3 cm and length 1.8 cm and mounted on a circuit board
is cooled by air flowing across it at a velocity of 240 m/min.
If the air temperature is 35°C, determine the surface tempera-
ture of the component. For air properties evaluations, assume a
film temperature of 50°C. Is this a good assumption?
7-84 Consider a 50-cm-diameter and 95-cm-long hot water
tank. The tank is placed on the roof of a house. The water
inside the tank is heated to 80°C by a flat-plate solar collector
during the day. The tank is then exposed to windy air at 18°C

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