Reconsider Prob. 9-20. Using the EES (or other) software, evaluate the effect of the plate thickness on the surface temperature exposed to the cold air. By varying the plate thickness from 0.01 to 0.1 m, plot the plate surface temperature on the cold air side as a function of the plate thickness.

Data from problem 20

A 0.2-m-long and 25-mm-thick vertical plate (k = 1.5 W/m ∙ K) separates the hot water from the cold air at 2°C. The plate surface exposed to the hot water has a temperature of 100°C, and the surface exposed to the cold air has an emissivity of 0.73. Determine the temperature of the plate surface exposed to the cold air (T_s,c). The T_s,c has to be found iteratively. Start the iteration process with an initial guess of 51°C for the T_s,c .

Transcribed Image Text:

Hot water 100°C Plate, & = 0.73 Cold air 2°C TS.C 7 Tsurr