Total Heat Transfer Rate. This equation for heat transfer is analogous to the relation for electric current flow i expressed as i 36 where r e ls e a is the electric resistanceand v 1 v 2 is the voltage dif ference across the resistance s e is the electrical conductivity. Total heat transfer rate and total sensible heat transfer rate.
Overall heat transfer coefficient u consider energy balance in a differential segment of a single pass heat exchanger shown schematically in fig.
When determining convergence i checked the flux report and tried to checked energy balance of the whole system. Many difficulties will be alleviated if models were available to compute. For the convection f heat transfer to have a physical meaning there must be a temperature difference between the heated surface. Total heat transfer rate and total sensible heat transfer rate.