How Does A Refrigerator Work? Detailed Answer 2022

A refrigerator is an appliance for maintaining the cool temperature of perishable foods including meat, vegetables, and fruits. We’ve all been put in positions when we needed to keep our meals cold. However, how does a refrigerator work? It’s not like magic that cools down the food. It’s a process, so let’s take a look at it.

What A Refrigerator Does

A refrigerator is a device for cooling and storing food and drinks. It’s also called a “fridge” for short, or “icebox” when it’s old-fashioned. A refrigerator keeps food cool and fresh by using electricity to run a compressor that pumps in cold air. The cold air then circulates through the refrigerator and chills the contents inside.

The compressor is powered by electricity, which comes from either the wall outlet or an electric generator. In some cases, the compressor can be powered by solar panels installed on top of the refrigerator.

The temperature inside a refrigerator varies depending on how much energy it uses. Energy-efficient models keep things colder than older models, which can make them more expensive to operate because they use more electricity.

Main Parts of a Fridge

A refrigerator is a complex machine that requires a lot of different parts to work properly. Some of these parts are internal, while others are external. When there is a problem with any of these components, it can cause your refrigerator to fail. Here are some of the main components found in refrigerators:


compressor of refrigerator

The refrigerator’s compressor is the most vital part of the appliance. Cooling is only feasible because of its job of recirculating the refrigerant throughout the system. The compressor also regulates the temperature in your refrigerator by adjusting its speed.



This component is located outside the refrigerator, and it absorbs heat from inside the unit. The condenser is connected to an evaporator, which helps cool down your food items in a very efficient manner.


Evaporator of refrigerator

This component absorbs heat from your food items and sends it out into the room through vents located at the back or top of your refrigerator.

Capillary Tube

Capillary Tube of Refrigeration

This tube carries liquid refrigerant through coils that are located inside each compartment of your fridge, thereby allowing for better cooling throughout each area of your unit. Capillary tubes are made from copper or aluminum, and they are responsible for distributing heat evenly throughout each compartment with minimal effort on your part.


The thermostat is used to regulate the temperature inside your fridge by turning it off or on depending on how warm or cold things get inside each compartment.

How Does a Refrigerator Work?

In the following, I will describe how modern refrigerators/freezers work in the easiest way for you to understand. They work by using a system of coils and fins. The coils are located inside the refrigerator, while the fins are on the outside of your refrigerator’s walls.

When you open up your fridge, you will see two or three metal tubes coming out from the back wall into the refrigerator compartment. These are called “cold air intake vents.” You also see a thin, plastic pipe with holes running along its length — this is called a heat exchanger (more on that in a minute).

The cold air intake vents draw in fresh air from outside, which passes through the heat exchanger and is cooled by the cold coil inside your refrigerator. Then it enters an evaporator chamber where it comes into contact with coolant flowing through another tube in that chamber. The result is that the warm air inside the fridge is cooled down even further, which makes it possible for food to stay fresh longer! The coolant circulates through coils and fins in order to produce cold air inside your fridge.

Refrigerator Working

Types Of Refrigerant Gasses

Refrigerants are substances that have a low boiling point and are still liquid at normal temperatures. It is a key component in air conditioning and refrigeration systems, where it serves to dissipate heat.

There are three main types of refrigerants:

  • Chlorofluorocarbons (CFCs) – These substances were commonly used as refrigerants before being banned by the Montreal Protocol (an international treaty). CFCs have been found to deplete the ozone layer and are harmful to the environment.
  • Hydrochlorofluorocarbons (HCFCs) — HCFCs are more environmentally friendly than CFCs, which they replaced as refrigerants, but they still pose a threat to the planet. Due to their strong global warming potential, HCFCs are being phased out gradually (GWP).
  • Hydrofluorocarbons (HFCs) – Because of their low GWPs and little environmental effect, they are gradually replacing HCFCs as the refrigerants of choice.

Types Of Cooling Systems

The cooling system in a refrigerator is responsible for maintaining the temperature of the interior and keeping food fresh. The refrigerant used in the cooling system is a low-pressure gas that absorbs heat from the inside of the refrigerator to reduce the temperature. There are several types of refrigerators, each with a specific type of cooling system.

Air-Cooled System

This type of refrigerator has an evaporator coil inside the freezer compartment. The evaporator coil is connected to a fan that blows air over it. As more air passes over it, more heat is removed from the interior of the refrigerator, and cold air flows out through vents in the exterior walls.

Water-Cooled System

These appliances have an evaporator coil located under or behind one or more shelves in their interior compartments. Water circulates through these coils and removes heat from inside the refrigerator compartment as it evaporates into steam (which is then vented outside).

Heat Pump

These appliances use electricity to pump heat energy out of your house and into your refrigerator compartment so that you can save on energy costs by using less electricity to cool your food storage area.


Why Does A Refrigerator Start And Stop During The Day?

The most common reason for this is that there is no food in the refrigerator. If you have food in your refrigerator, it will stay cold without any problems. However, if you have empty shelves or drawers in your refrigerator, it may turn on and off frequently as it attempts to maintain a specific temperature. This can be frustrating because it can make it seem like something is wrong with your appliance when there’s nothing wrong at all!

What Keeps A Refrigerator Cold?

Refrigerators are very popular in the modern world. They have allowed us to preserve food for longer periods of time and have helped improve the quality of life for many people. But what exactly does a refrigerator do? How does it work? And what keeps it cold?

The answer is simple: it is the Rankine cycle, a thermodynamic cycle, that is used. Removing the heat from a confined space is what refrigeration does. To keep anything cold, we must first remove the heat that would otherwise cause it to warm up.

Why Is The Freezer Cold But The Refrigerator Not?

The freezer is cold because it is made out of a material that absorbs heat from its surroundings. The refrigerator is not cold because it has an air conditioner inside that blows air around and cools the refrigerator down.

The reason why the freezer is cold but not the refrigerator is because of how they are made. The freezer is made out of a material that absorbs heat from its surroundings, so when you put ice cream in there, it will stay cold for a long time. The refrigerator doesn’t absorb heat from its surroundings, so it stays warm all the time.

The reason why the refrigerator isn’t cold is that there’s an air conditioner inside that blows air around and cools things down.


In conclusion, now you can know the way refrigerators works. The refrigerator works due to coolants that are kept in tubes and are added regularly. The coolants are kept under pressure to mix with air, but when it reaches the condenser coils, it leaves as gas as heat is absorbed into the coils. The refrigerator works thanks to this cycle, which keeps the coolant moving up and down depending on whether it is hot or cold.

Staff Writer At Saved By The Max

Jeremy was responsible for initial staffing and daily management of bar, kitchen, and service. Branding and all marketing activities were part of his responsibilities as well.

Leave a Comment