Direct contact heat transfer between coconut oil and water using multi-nozzle dispersal system: Project study

Date of Publication

1986

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Chemical Engineering

Subject Categories

Chemical Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Honor/Award

Awarded as best thesis, 1986

Thesis Adviser

Servillano Olano, Jr.

Abstract/Summary

Direct heat transfer in an exchange column, 8.9 cm. ID and 122 cm. height, was studied. The system used was refined coconut oil and water, with the oil phase dispersed. The dispersed phase rate was varied from 1.56 to 15.77 ml. /sec., and the water phase rate covered the range 4.22 to 23.75 ml./sec.. Observations were made on three different sizes of nozzles, namely: 1/8 inch, ¼ inch, and 5/16 inch.

The results of the study show that the drop diameter of oil droplets is a function of nozzle velocity. When nozzle velocity increases, the drop size decreases. The drop velocity is also a function of drop diameter, where larger drop size causes a higher drop velocity.

The overall heat transfer coefficient decreases as holdup increases due the partial obstruction of interfacial area by closely packed droplets.

Water phase film coefficient was found to be affected by holdups. At low holdups, the film coefficient is less than the overall heat transfer coefficient. At high holdups, the reverse is true.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU03753

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

xvi, 242 leaves : ill. ; 28 cm.

Keywords

Heat transmission; Coconut oil; Water; Nozzles

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