Document Type
Thesis
Date of Award
6-30-1958
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering
First Advisor
George C. Keeffe
Second Advisor
C. L. Mantell
Third Advisor
Jerome J. Salamone
Abstract
The heat transfer coefficients of the condensing vapors of n-butyl, 1-amyl, and tertiary amyl alcohols have been measured for a single horizontal tube. This is the first time that i-amyl and tertiary amyl alcohols have been investigated. The modified Wilson method presented by Chu was used in analysing the data.
Chu pointed out that over a moderate range of temperature, the condensing heat transfer coefficient should vary inversely with the one-third power of the rate of heat transfer. For the alcohols studied in these experiments, the measured powers were between 0.20 and 0.36, which are in good agreement with Chu's analysis.
The measured coefficients are in very good agreement with those computed from the Nusselt equation. The deviations for n-butyl alcohol were 1 to 4 per cent; for i-amyl alcohol, 4 to 7 per cent; and for tertiary amyl alcohol, 8 to 9 per cent. There is an increase in the deviations with increase in molecular weight and complexity of the molecules. However, the deviations are all within the experimental error. There is considerable unreliability in some of the physical properties of the i-amyl and tertiary amyl alcohols and this could account for their higher deviations.
Recommended Citation
Palmer, Carl Lennart, "Heat transfer coefficients of condensing vapors" (1958). Theses. 3188.
https://digitalcommons.njit.edu/theses/3188
