On the application of Reynolds' analogy and the heat-exchange factor to the design of heat exchangers II and III

Part II. For heat exchangers in which the temperature differences between gas and wall decrease considerably it proves to be useful to introduce a “heat-exchange factor”K. A simple relation betweenK and the pressure drop can be derived from the modified form of Reynolds' analogy given in part I. This relation is applied to some problems of optimum dimensions for heat exchangers.