Analysis of Control Strategies and Simulation of Heating Systems Using Simulink/matlab Potential

ANALYSIS OF CONTROL STRATEGIES AND SIMULATION OF HEATING SYSTEMS USING

SIMULINK/MATLAB POTENTIAL

BY

FAGBOLA VICTOR BOLUWATIFE

ELECTRICAL/ELECTRONICS ENGINEERING DEPARTMENT

140403511

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COURSE TITLE: SYNTHESIS AND DESIGN OF CONTROL

SYSTEMS

COURSE CODE: EEG 505

LECTURER: DR. P. O. OLUSEYI

ABSTRACT

In this project, the Simulink/Matlab potential is used to develop a dynamic model of a forced air type heating system. The main concern was centered on the analysis of control strategies to improve the system performance and to investigate the effect of thermal parameters on system performance and energy efficiency. The analysis of the PID control strategies was conducted to investigate the features in terms of comfort and power consumption. The effects of thermal parameters such as thermal capacity, equivalent thermal resistance and set point setting were investigated. The results showed that Simulink/Matlab has a very high potential to analyze control strategies and to investigate thermal characteristics. The PID control strategy performs in terms of overshoot, settling time reduction and in suppressing the effect of external temperature disturbances. The overshoot was around 4 % and the steady state error disappeared quickly. Simulation results showed that high thermal mass buildings can significantly reduce the room air temperature variation; lower set point setting reduced the cumulative energy consumed and an increase in the equivalent thermal resistance led to a significant saving in energy consumption.

TABLE OF CONTENTS

Abstract……………………………………………………………………………………………ii

Table of Contents…………………………………………………………………………………iii

Chapter 1

        Introduction………………………………………………………………………………..1

Chapter 2

        2.1        Model Description………………………………………………………………....2

        2.2        Mathematical Modelling…………………………………………………………..2

Chapter 3

Results and Discussion…………………………………………………………………………….7

3.1        Effect of thermal capacity………………………………………………………….7

3.2        Effect of mass flow rate on the indoor temperature……………………………….8