CONSTRUCTION OF A MOBILE REFRIGERATOR

Code No: 861437

₦5,000.00

ABSTRACT

This write up is a detain of the process and formulation of plan for the physical realization of the construction of a mobile cooking system. It as divided into chapters, which discussed extensively the practical refrigerator cycle with attention given to constriction factors, working principle and choice of materials. The method used in the fabrication, assembly and arriving as knowing the safety requirement were not left out.
It is strongly believed by the authors that his will make an interesting study for inquisitive minds and collection of fact for future related project.

CHAPTER 1

CHAPTER ONE
1.0       INTRODUCTION
Over the years, there has been the problem of food preservation in many countries of the world and Nigeria in particular. Man cooks his food and if not warmed at least every ten hours will get spoilt. Food items like boiled beans, yam, rice, beef etc spoilt. Some days due to lack of adequate preservation facility. Most also after some day work, man needs to take chilled drink in order to maintain or normalize his body temperature. For him to achieve this he uses clay pot to store drinking water. The clay pot does cooling but to an extent.
Man can preserve his food by constant warming, drying under the sun, salting etc but that is not enough for total or adequate preservation. Nowadays, these methods of food preservation are not practiced again.
            For more than decades this problem of food preservation has been a stumbling block in our homes. No sooner than latter did men star looking for a way to solve the problem hence the construction of cooling system (refrigerator)
            The purpose and objectives of embarking on this project is to construct a cooling system that does cooling and preserves food items for future use. For this to be achieved. We need a machine that can transfer heat from a cold chamber which is at a temperature lower than that of its surroundings. This is because, bacteria that would have acted on the food items cannot survive in a very low temperature.
            For a complete refrigeration process, we need to have the following parts of refrigeration system.
1.   Compressor -                  This pumps the refrigerant or the gas through the entire system.
2.    Condenser -                    This is the cooling coil for the hot refrigerant gas.
3.    Drier Strainer -               It removes any moisture or impurities associated with hot refrigerant gas.
4.   Metering Device -            The tube is usually soldered along the exterior of the discharge line, forming a heat exchange which helps to cool the hot liquid refrigerant.
5. Evaporator â€“ At the evaporator, the refrigerant absorbs heat from the strange area and is gradually changed from a liquid and a gas mixture to a gas.