Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by (εx + εy)/(εx + εy - εx . εy) Εx . εy 1/εx + 1/εy Εx + εy (εx + εy)/(εx + εy - εx . εy) Εx . εy 1/εx + 1/εy Εx + εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number. Brinkman Stantan Condensation Grashoff Brinkman Stantan Condensation Grashoff ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynold's analogies are identical for Prandtl number value of 0.5 5 1 0.5 5 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the Temperature of the incoming vapor is very high Condensate is corrosive in nature Lower pressure drop through the exchanger is desired Higher condensing film co-efficient is desired Temperature of the incoming vapor is very high Condensate is corrosive in nature Lower pressure drop through the exchanger is desired Higher condensing film co-efficient is desired ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in Increased economy Lower capacity Decreased economy No effect on economy Increased economy Lower capacity Decreased economy No effect on economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux is the time rate of heat transfer per unit area none of the listed here volume length area none of the listed here volume length ANSWER DOWNLOAD EXAMIANS APP
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