How A Refrigerator Works

In olden days when refrigerators where not available, people used different techniques to preserve their food. Salting, pickling, and canning were some of the ways used by people to keep their food fresh for longer periods of time. Today, we use advanced technology to keep our food fresh longer. The fancy piece of technology that preserves our food is the refrigerator. In this article, we will explain how this household appliance works.

To understand the working of the refrigerator, you must know the Second Law of Thermodynamics. This law states that when two objects of different temperatures come in contact with each other, the object of lower temperature will become warmer and the object of higher temperature will become cooler. You must also know another important principle which states that when gas expands, it becomes colder in temperature. If you have understood these two principles, it becomes easy to understand the working of the refrigerator.

When understanding the working of a refrigerator, the first part you should know about is the refrigerant. This is the part used by the residential appliance to maintain the temperature inside the machine. Earlier, Freon was used as a refrigerant, but today, most manufacturers use HFC or ammonia. When the temperature and pressure of the liquid refrigerant changes; it lowers the temperature inside the refrigerator. When the refrigerant evaporates at low temperature, it will help in reducing the temperature inside refrigerator.

The next part that is responsible for cooling the refrigerator is the evaporator. This part absorbs the heat present inside the house appliance. You must not forget the heating coils that cover the entire back of the machine. These coils carry the refrigerant throughout the refrigerator. The compressor, which is powered by the motor, is responsible for raising the pressure of refrigerant. This helps in increasing the temperature inside the machine. The condenser is responsible for condensing the vaporized refrigerant and converts it into liquid, which lowers the temperature inside the machine.

Modern refrigerators have a cycle which alters the temperature, state of matter, and the pressure of the refrigerant. When the refrigerator is working, the refrigerant, which is in the gaseous state, passes through the compressor. As the refrigerant is compressed, it increases in pressure and temperature, and turns into heated vapor. The refrigerant then passes through the coils where the temperature of the refrigerant decreases. It then passes through the condenser which again reduces the temperature of the refrigerant. This converts the gaseous refrigerant into liquid refrigerant. The liquid refrigerant then passes through the expansion valve which increases the pressure and causes some evaporation. During this process, the refrigerant absorbs the heat from the food kept in the refrigerator and cools it.

Understanding the working of the refrigerator will help you carry out simple appliance repair San Antonio without professional help. However, for any major problem with the machine, it is best to get help from a professional fridge repairman. Companies that offer refrigerator repair may also offer oven repair, microwave repair, stove repair, dishwasher repair, washing machine repair, and dryer repair. When there is a problem with your household appliance, their dryer service technician, washer technician, or any other appliance repair technician will visit your home to repair or service the product.