Comparison of Cascade Control Technique for High Temperature Short Time Pasteurization System

Comparison of Cascade Control Technique for High Temperature Short Time Pasteurization System
Author(s):
V. RAM KUMAR
Keywords:
data acquisition; dairy; pasteurization; high temperature, short-time controls) Abbreviation key: DAS = data acquisition system; FDV = flow diversion valve; LTC = LABTECH Control; PMO = Grade-A Pasteurized Milk Ordinance, 1993 Revision; STLR = safety thermal limit recorder.
Abstract
In this study control systems such as cascade, single loop and multivariable systems are compared for control of High Temperature Short Time Pasteurization are compared against each other using computer system. Here it is seen that how system cascade provides a much smoother temperature response curve compared to single loop systems even though they show a slower recovery. But this paper also shows how multivariable approach is able to recover faster and also show a much smoother temperature response curve. The temperature data recorded by the data acquisition system has recorded the data within an error limit of ą0.1℃ and thus the data acquisition system is a much complete way of measuring and recording the temperature data for this study.
Article Details
Unique Paper ID: 147219 Publication Volume & Issue: Volume 5, Issue 6 Page(s): 63 - 68
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