how the refrigerator works?

A refrigerator works by passing the cold refrigerant gas around meals items (stored inside the fridge), which absorbs warmth from them and then loses warmth to a comparatively cold environment outside.

Refrigerator working principle:

The working principle of a fridge could be very simple: it includes the removing of warmth from one region and its deposition for another.

When you pass a low-temperature liquid close to the objects you want to cool, the warmth from these objects is transferred to the liquid, which evaporates and takes away the warmth within the process.

Parts of refrigerator and their works:

how the refrigerator works

Fridges have some key elements that play a vital function within the refrigeration process:

Expansion valve:

Additionally known as a circulate management system, a growth valve controls the circulate of liquid refrigerant into the evaporator.

It is actually a very small system that is sensitive to temperature modification within the winter.


The compressor consists of a motor that sucks the motor from evaporator and compresses it into a cylinder to provide a sizzling, high-pressure gas.


This is the part that truly cools the stuff stored inside a refrigerator works.

It consists of fined tubes (fabricated from metals with excessive thermal conductivity to maximize warmth transfer), which take in the heat blown through the coil by a fan.

The evaporator absorbs warmth from the fabric stored inside and because of this warmth, the liquid turns into refrigerant vapor.


The condenser has a coiled set of tubes with exterior fans and is positioned at the back of the fridge.

It helps in liquefaction of gaseous refrigerant by absorbing its heat and subsequently expelling to the atmosphere.

Condenser coils:

As the warmth of the refrigerant is eliminated, its temperature drops to the condensation temperature and it changes from vapour to liquid.


It is known as coolant, it is the liquid that retains the refrigerator works cycle operating.

It is actually a specifically designed chemical able to alternating between being a hot fuel and a cool liquid.

Within the 20th century, fluorocarbons, especially CFCs have been a typical selection as refrigerant.

However, they are being replaced by extra environmentally friendly fridges equivalent to ammonia, R-290, R-600A, and many others.

Also, read which gas used in refrigerator?

How the Refrigerator Works?

Within the liquid state, the refrigerant passes through the expansion valve and turns into cold gas because of a sudden drop in pressure.

Because the cold refrigerant gas flows by the chiller cabinet, it absorbs heat from the meals items contained in the fridge and evaporates.

The refrigerant gas flows into the compressor, which sucks it inside and compresses the molecules collectively to form a sizzling and high-pressure gas.

Now, this gas is transported to the condenser coil (thin radiator pipe) located at the back of the fridge, where the coil helps circulate its heat so that it cools enough to condense and converts back to its liquid phase.

Because the heat collected from the food is released to the surrounding environment through the condenser, it feels warm to the touch.

After the condenser, the liquid refrigerant travels again to the expansion valve, the place it experiences a stress drop and turns into a cool gas once again.It then absorbs heat from the contents of the fridge and repeats the entire cycle.


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Refrigerator works is one of the important roles in electronic devices as it prevents food items for a long time.

Now I’d like to hear from you, which refrigerator was new to you or maybe I missed something. Either way, let me know by leaving a comment below.

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