Refrigeration System

INTRODUCTION

Refrigeration maintains the temperature of the heat source below that of its surroundings

while transferring the extracted heat, and any required energy input to a heat sink,

atmospheric air or surface water. is a very important unit operation. During the 1990’s. it was estimated that

annual investment in refrigeration machinery and equipment exceeded $100 billion and the

value of the products treated by refrigeration exceeded $1 trillion.

Types of refrigeration may be categorized within five abroad areas of application that touch

most of our daily lives:

1. Daily devices, like household refrigerator / freezers.

2. Commercial equipment systems in example of supermarket display, restaurants,

and cafeterias.

3. Food processing like refrigerated warehouse.

4. Industrial tools, in example of liquefaction of gases, chemical process cooling, and

crystallization.

5. Public Transportation (refrigerated truck or trailer and marine containers).

This Refrigeration design guideline covers the basic elements in the field of Refrigeration

Systems in detail to allow an engineer to design a Refrigeration System with the suitable

size of refrigeration needed, work input, coefficient of performance (COP), electric power

input and selecting refrigerant which is to be utilized. This design guideline includes design

of single stage, multi stage and cascade refrigeration systems.

A refrigeration system is a combination of components and equipment connected in a

sequential order to produce the desired refrigeration effect (cooling or heating).

Refrigeration maintains the temperature of the heat source below that of its surroundings

while transferring the extracted heat, and any required energy input to a heat sink,

atmospheric air or surface water.

The design of a Refrigeration System may be influenced by factors, including process

requirements, economics and safety.