How Do Commercial Refrigeration Systems Work?

Refrigeration has made it possible for businesses and individuals to store foods and beverages for longer periods of time without their spoiling. For convenience and safety, commercial refrigeration keeps both prepared foods and meal ingredients cool by eliminating heat. Various methods of heat removal have been used over the years; continue reading to see how modern commercial refrigeration systems work.

Commercial Refrigeration Systems

Commercial refrigeration has grown into a multibillion-dollar industry. Chilling is a high-temperature technique that reduces the environment’s temperature to below freezing. In the food industry, freezers are crucial. The entire business might be imperiled if the refrigeration system fails.

Technicians, owners, and installers that work with commercial refrigeration on a daily basis face a difficulty. Installations, networks, parts, expenses, and so on, all have different levels. In reality, refrigerating systems are required for sustaining cold storage in all major industries, including food, chemicals, and technology.

Commercial refrigeration systems cool or dry the air utilizing a refrigeration circuit in conjunction with an absorption system or vapor compressor. Refrigeration works on the idea of expanding a liquid into a gas and removing heat from the surrounding region.

The compressor is where the refrigeration cycle begins and ends. The refrigerant enters the compressor, which compresses and pressurizes it. The refrigerant is a hot gas at this moment. The refrigerant is then transported to the Condenser, which condenses the vapor and absorbs some of the heat. After that, the refrigerant travels to the Expansion Valve, where it expands and loses pressure and heat.

Due to the loss of pressure, the refrigerant exiting the expansion valve is chilly and slow. It enters the Evaporator in a liquid condition, where heat is exchanged and the load inside the refrigerator is cooled. The heat is absorbed by the gas as it cools the load, turning it into a gas. The gas is subsequently forced back into the compressor, allowing the cycle to begin again.

A build-up of ice surrounding the evaporator may occur during the refrigeration cycle. Defrost systems are used in both commercial refrigerators and freezers to combat this build-up. More information on the many sorts of defrosting functions can be found here.

Refrigeration Cycle

The refrigeration cycle entails the transportation of refrigerant from one location to another and in many forms, with the ultimate purpose of lowering temperatures in a cabinet, counter, or cool room. One of the most important reasons to learn how your business refrigerator works is so that you can successfully clean and repair it. Understanding that your refrigerator employs an air-cooled condenser, for example, will assist you in locating the best location for your unit to make its job easier and save energy use. Only by grasping the fundamentals will one be able to get the most out of their commercial refrigeration.

Cooling Method

The Second Law of Thermodynamics governs the operation of all refrigeration systems. When two items of different temperatures are brought close together, heat will always move from the warmer object to the colder one, according to this principle. Commercial refrigeration systems use a refrigerant solution to transfer heat from the food inside the storage section of the refrigeration unit to the refrigerant. A second fundamental principle governs refrigerant solutions: gases cool as they expand and heat up as they are squeezed. The refrigerant is sent through a series of pressure changes while cycling through the refrigeration system to enhance the efficiency and speed with which it removes heat from the refrigerated region to maintain it cold.


The success of modern commercial refrigeration systems is dependent on refrigerant. Freon was once the most often used refrigerant in both air conditioners and freezers. Freon, on the other hand, was discovered to deplete the Earth’s ozone layer, resulting in an increase in solar radiation reaching the planet’s surface and changes in global climate. In the United States, Freon is being phased out of usage, and new refrigerants, such as tetrafluoroethane, are gradually taking its place to increase the efficiency and environmental friendliness of current refrigeration systems.

If you’d like to learn more about Celestial Air’s commercial refrigeration capabilities, please follow these links to our related articles:


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