Engineering Commons^™

Heat Transfer Coefficients Of Condensing Vapors, Charles Rocco Lipuma, Earl Adolph Nirmaier

Theses

The film coefficients of heat transfer for vapors condensing on a single horizontal tube have been measured for methyl, i-propyl, and n-butyl alcohols. The equipment used was specifically designed for these studies, and represents an improvement over that used by other investigators. The data collected were analyzed usingmodified Wilson method which is based on a rigorous theoretical analysis.

It has been found that the condensing film coefficients for methyl and i-propyl alcohols vary with the heat duty. This is to be expected from the analysis mentioned above. Me variation was found for n-butyl alcohol.

The observed values of the heat …

Heat Transfer Coefficients In An Agitated Vessel Using Verticle-Tube Baffles, Edward Joseph Barrasso

Theses

Data are presented to show the effect of impeller speed, impeller type, and fluid properties on the forced-convection film coefficient of heat transfer for verticle tubes in a cylindrical vessel. A generalized equation to predict the film coefficient of heat transfer on the outside of verticle tubes in an agitated vessel for both cooling and heating is also presented. This equation may be used to estimate the necessary areas of heat transfer for verticle tubes in an agitated vessel within the degree of accuracy required from most engineering calculations.

This study was the first initiated to develop an equation to …