A Method of Determining the Pressure Drop for Oil-Vapor Mixtures Flowing Through Furnace Coils

Abstract

This paper outlines a procedure for calculating pressure drops which has been used by the authors in the design of furnaces over a period of several years. The resultant total pressure drops have in each case checked closely with the calculated values. The equations given in the paper are set up to determine the pressure gradient for the part of the furnace where a liquid-vapor composition exists, particularly in the case of a vaporizing petroleum oil. The method as outlined consists of a combination of mathematical equations and graphical solutions.