Thesis Abstract

Abstract
The refurbishment of temperature control apparatus is a crucial process in various industries where precise temperature regulation is necessary for efficient operations. This research project aims to explore the refurbishment techniques and strategies for temperature control apparatus to extend their lifespan and improve their performance. The project will focus on different types of temperature control apparatus, including thermostats, temperature sensors, and control systems used in heating, ventilation, air conditioning, and refrigeration (HVACR) systems. The research will involve a comprehensive review of the current state of temperature control apparatus refurbishment practices, including common issues faced by these systems and the limitations of existing refurbishment methods. By identifying the challenges and shortcomings in the refurbishment process, the project aims to develop innovative solutions and best practices to enhance the reliability and efficiency of temperature control systems. The refurbishment process will involve a series of steps, including inspection, diagnosis, repair, replacement of components, calibration, and testing to ensure the restored apparatus meets or exceeds its original performance specifications. Special attention will be given to the selection of high-quality replacement parts and materials to ensure the longevity and reliability of the refurbished temperature control apparatus. The project will also investigate the potential environmental impact of refurbishing temperature control apparatus compared to replacing them with new systems. By conducting a life cycle assessment, the research aims to quantify the energy savings, material conservation, and waste reduction associated with refurbishment, contributing to the sustainability goals of industries relying on temperature control systems. Furthermore, the project will explore the economic aspects of temperature control apparatus refurbishment, including cost analysis, return on investment, and potential savings compared to purchasing new equipment. By developing a clear understanding of the financial benefits of refurbishment, industries can make informed decisions on whether to refurbish or replace their temperature control systems. Overall, this research project on the refurbishment of temperature control apparatus will provide valuable insights and guidelines for industries looking to optimize the performance, lifespan, and sustainability of their temperature control systems. By implementing the recommended refurbishment techniques and best practices, industries can achieve cost savings, reduced downtime, and improved operational efficiency while minimizing their environmental footprint.

Thesis Overview

 BACKGROUND OF THE STUDY

Armfield temperature control appara [tus is a pilot plant scale apparatus for the study of heat transfer, process control fluid mechanism and thermodynamics by chemical Engineering students in various institutions of higher learning.

The apparatus consists of two heaters, with voltage between 220-240 and 6kw of power. The heaters has thermostatic range from 380C-82C0, heat transfer area (A) of the heat exchanger is 0.64m2 (0.059fts2) ALFA-LAVAL. Four thermo walls, each fitted at the inlet and outlet points on the heat exchanger for insertion of thermometers for temperature measurement. It has a sump tank of capacity of 70 litres, three flow meters (Rotameters), two of variable area type, a pump of power 0.23kw and capacity of 55litres/min at 1.5m and 9 litres/min at 6m. a control valve (air regulator) of ½ inch, PID (Honey well) controller, two pen chart recorder, temperature sensor, electronic controller etc. as the name applies it is used to control or measure temperature.

In industries in order to avoid wastes during production of goods, even in pilot plant where production of good are in small scale, there is need for control system which gives more stable (Uniform) process and higher quality products. Certain variables like temperature applied to fluid or rather dictated from body, fluid flow rate, pressure etc which causes loss of valuable materials during production. Some of the above mentioned variable can be corrected using temperature control apparatus.

Heat exchange is one of the most frequent operations mainly in process industries. A large number of processes proceed at a much faster rate as the temperature is raised and it is economically advantageous to use as high a temperature as possible. Chemical reaction rates are approximately doubled for every 100 rise in temperature.

Chemical reactions are frequently exothermic, however, and it may well be necessary to remove heat through a heat exchanger rather than supply it inorder to avoid a catastrophic temperature rise. Thus, to balance the requirements of maximum efficiency and complete control over the process may require the very close regulation of the temperature.

The pilot plant temperature control apparatus is designed to show the working of a heat exchanger and to permit a series of experiments to be performed with it. Water is both the process fluid and the heating fluid, the rate of flow may be set up to show how flow control may be obtained in various ways.

1.2       AIMS OF THE STUDY

Refurbishment is to keep the apparatus in top operating condition through repairs, maintenance and servicing of parts of the apparatus. Through the refurbishment it increase the workability of the apparatus (equipment) the degree of accuracy and precision as well the sensitivity of the equipment. It improves the performance of the equipment, maximize efficiency and bring error to minimum.

Through the maintenance or refurbishment of the equipment, quantity/quality control, cost effectiveness, strength of material and prolonged apparatus/plant life span can be obtained.

1.3     SCOPE OF THE STUDY

This involves detecting the faulty components of the temperature control apparatus and the repairing which includes general servicing, flushing of the sump tank. To reduce fouling, scraping off the corroded parts, filling of the leaking parts with filler and painting of the sump tank. Ensuring that there would be no leakage either by values or pipes when running the apparatus and the efficiency of the circulating pump.

At the end, it is expected that he pilot plant temperature control apparatus will be in top operating conditio