Design, fabrication and testing of a laboratory scale rotating thin-film syrup evaporator

Date

4-2013

Degree

Bachelor of Science in Chemical Engineering

Major Course

Major in Sugar Technology

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Casiano S. Abrigo, Jr.

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The study aimed to design,fabricate and test a laboratory scale rotating thin-film syrup evaporator without using additional heat aside from the inherent heat supplied by the heaters in the factory. The computed surface area of the thin-film evaporator is 8.810ft². The highest increase in Brix readings was obtained from the solution using normal factory conditions (hot air and initially hot solution). This result has the fastest specific evaporation rate. The results also showed that variations in air velocity had negligible effect on the increase in rates of evaporation. Changes in air and solution temperature result to variations in evaporation rates. The highest experimental specific evaporation rate was 1.206 lbs H₂O/ft²-hr. This value is much lower than the standard specific evaporation rate of the multiple effect evaporation of 7-8 lbs H₂O/ ft²-hr. The other experimental conditions gave much lower evaporation rates. The differences in the results of all experimental treatments were statistically analyzed. The energy consumption of the thin-film evaporation was calculated and compared with the energy consumption of the multiple effect evaporator.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2013 E62 J33

Document Type

Thesis

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