The top surface (0.5 m0.5 m) of an oven is 60C fora
Chapter 9, Problem 9.96(choose chapter or problem)
The top surface (0.5 m?0.5 m) of an oven is 60?C fora particular operating condition when the room air is23?C. To reduce heat loss from the oven and to mini-mize burn hazard, it is proposed to create a 50- mm airspace by adding a cover plate.(a) Assuming the same oven surface temperature Tsforboth situations, estimate the reduction in the convec-tion heat loss resulting from installation of the coverplate. What is the temperature of the cover plate?(b) Explore the effect of the cover plate spacing on theconvection heat loss and the cover plate tempera-ture for spacings in the range 5L50 mm. Isthere an optimum spacing?
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