. a) Explain Buckingham's Pi theorem and Derive the relationship between the heat [5] transfer coefficient,...

 

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. a) Explain Buckingham's Pi theorem and Derive the relationship between the heat [5] transfer coefficient, h for forced convection heat transfer on the assumption that the coefficient h is function of the following variables L, u, p, k, Cp and using Dimensional analysis. b) Explain the regimes of pool boiling. [3] c) Estimate the total heat loss by convection and radiation from an unlagged steam [3] pipe, 50cm outer diameter at 415 K to air at 290 K. (Data: e = 0.90, he 1.18(AT/D)0.25 W/m.K) . a) Explain Buckingham's Pi theorem and Derive the relationship between the heat [5] transfer coefficient, h for forced convection heat transfer on the assumption that the coefficient h is function of the following variables L, u, p, k, Cp and using Dimensional analysis. b) Explain the regimes of pool boiling. [3] c) Estimate the total heat loss by convection and radiation from an unlagged steam [3] pipe, 50cm outer diameter at 415 K to air at 290 K. (Data: e = 0.90, he 1.18(AT/D)0.25 W/m.K)