Fundamentals of a Refrigerator

We sometimes take for granted how some things that are close to us function. It could be cars, computers or even refrigerators. However, in this article we shall be discussing the fundamentals of a refrigerator. In other words, how a refrigerator functions. This is important because when our refrigerator breaks down we would know how to identify the cause as well as perform refrigerator repair.

The main function of a refrigerator is to keep food cold. Keeping food cold is not to appease the senses of us humans when we choose to devour it. Instead by keeping food cold, you are actually slowing down microorganism activity within the food. This is because enzyme activity is low when the temperature is low. Thus this ensures that the food could be kept longer and fresher.

Freezers and refrigerators have two basic components which are the condenser coil and evaporator coil. Liquid coolant is circulated around these coils by a motor and compressor. The coolant is first cooled in the condenser and flows to the evaporator. The reason why the air in the refrigerator is cool is because the air is cooled by contact with the liquid-filled coil. The condenser of the fridge and freezer is the coil located outside the refrigerator. The coolant is circulated around the coils by a compressor.

If your refrigerator has a label that indicates that it is frost free, it means that it is preinstalled with a built in heater which is turned on automatically to melt the frost produced at the sides of the container. The heater is turned on at areas which are the coldest which indicates that it is covered with frost. When all the frost is melted, the thermostat automatically changes to the cooling cycle to preserve the freezing point of the food.

With these fundamentals, are you now able to troubleshoot and perform your very own DIY refrigerator repair?


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