Consider a horizontal flat roof section having the
Chapter 9, Problem 9.92(choose chapter or problem)
Consider a horizontal flat roof section having the samedimensions as a vertical wall section. For both sections,the surfaces exposed to the air gap are at 18?C (inside)and?10?C (outside).(a) Estimate the ratio of the convection heat rate forthe horizontal section to that of the vertical section.(b) What effect will inserting a baffle at the mid-heightof the vertical section have on the convection heatrate for that section?
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