A flat plates surface tempertures are initially at 120 deg C and 60 deg C with...

A flat plates surface tempertures are initially at 120 deg C and 60 deg C with one surfaces temperature being lower due to air at 20 deg C flowing over it with a velocity of 2m/s having a heat transfer coefficient of 30 W/m ^2K. The themal conductivities of the sheet metal and air are 35 W/m K. and 0.0262 W/mK. respectively.

Without following the problem solving guide answer the following question providing detaied justifications:

A. What are the modes of heat transfer?

B. Is this a time dependent or steady state problem? Why or why not?

C. The themal conductivities in the sheet metal and air are significantly different. Recalling the definition of thermal conductivity, What can you conclude about the materials abilitys to transfer heat?

D. How would the heat transfer in the system differ if the cooling was through natural convection? Explain your reasoning.

E. Draw a schematic of the energy flow?

Solutions

Expert Solution

samet mamat answered 1 year ago

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