Mean heat flux concept in evaporator design
Abstract With regard to wall superheat variation along the evaporator heating surface, a method has been devised to estimate the mean heat flux with respect to inlet and outlet temperatures of the evaporator fluids. Uncertainties involved in using the conventional logarithmic mean temperature difference method are avoided. Diagrams are used to demonstrate the application of the method to refrigeration and heat pump systems in which hydrocarbon compounds are the working fluids. Sample problems illustrate the effectiveness of the method.