Reconsider Prob. 928E. Using EES (or other) software plot the rate of natural convection heat transfer for different orientations of the plate as a function of the plate temperature as the temperature varies from 80F to 180F and discuss the results. Problem. 928 Consider a 2-ft 2-ft thin square plate in a room at 75F. One side of the plate is maintained at a temperature of 130F while the other side is insulated. Determine the rate of heat transfer from the plate by natural convection if the plate is (a) vertical (b) horizontal with hot surface facing up and (c)horizontal with hot surface facing down.

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