Design, fabrication and testing of an on-off, negative feedback temperature control system for a pilot scale constant holdup, continuous stirred-tank water heater

Date

10-2010

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Butch G. Bataller

Committee Member

Jeanne Michelle T. Valencia,

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Abstract

A constant holdup continuous stirred-tank water heater was fabricated. Thermocouple sensors, immersion heater and an on-off solenoid valve were installed. The thermocouple sensors were calibrated. The process reaction equations due to the heater load and control valve action were established. The result of the calibration and process reaction method were incorporated into a temperature control virtual instrument (VI) developed using NI LabVIEWTM. The control system was tested at three set points: 40, 45 and 500C. Set point versus tank temperature curves were generated. The time of the first overshoot and the time of stability was achieved were determined from the test runs. The control system performance was evaluated based on peak percent overshoot (PPO). The ideal PPO for effective control is 50%. For the temperature control system the calculated values f PPO for step change at the three set points were 25.0%, 33.3333% and 13.8889% respectively.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2010 E62 D65

Document Type

Thesis

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