Heat-Transfer Design Data and Alignment Charts

Abstract

Abstract A search was made, during a research program on heat transfer, for the best available methods for the prediction of heat-transfer coefficients and for means of simplifying design calculations. The equations selected or developed on film coefficients are given in the paper for gases flowing in turbulent motion inside tubes, for gases flowing across tube banks, for free convection outside horizontal cylinders and at vertical surfaces, and for condensing vapors. Alignment charts are given for the solution of these equations. A simplified method of designing gas-heat exchangers was worked out on the basis of one of the equations for the heat-transfer coefficient, and a chart is also given for pressure-drop calculations made in designing heat-transfer equipment.