What is the basic idea behind a refrigerator?

The fundamental reason for having a refrigerator is to keep food cold. Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacte- ria (which all food contains) so that it takes longer for the bacteria to spoil the food.

What are the basic parts of a refrigerator?

The main working parts of a refrigerator include: a compressor, a condenser, an evaporator, an expansion valve, and refrigerant.

How do refrigerator compressors work?

In the first stage of the refrigeration cycle, refrigerant enters a compressor as a low-pressure vapor. The compressor compresses the refrigerant to a high-pressure vapor, causing it to become superheated. Once the refrigerant is compressed and heated, it leaves the compressor and enters the next stage of the cycle.

How does a bottom freezer refrigerator work?

“These units feature a single compressor that cools the freezer, with cold air routed down to the refrigeration compartment through a series of vents or baffles.” “Bottom freezers typically move air from the freezer compartment up to the refrigeration area through a series of fan ducting,” Johansson explains.

What are the 5 parts of the refrigerator?

In the refrigeration cycle, there are five basic components: fluid refrigerant; a compressor, which controls the flow of refrigerant; the condenser coils (on the outside of the fridge); the evaporator coils (on the inside of the fridge); and something called an expansion device.

What is the working principle of a compressor?

Air compressors work by forcing air into a container and pressurizing it. Then, the air is forced through an opening in the tank, where pressure builds up. Think of it like an open balloon: the compressed air can be used as energy as it’s released.

How does a refrigerator electric motor work?

The refrigerator compressor is both a motor and a pump that move the refrigerant through the system. The compressor pushes out the hot, compressed gas through the outside metal coils (tubes) on the back or bottom of the refrigerator. These coils allow the heat to dissipate into the surrounding air.

Why are bottom mount fridges more expensive?

Bottom-Mount Fridges Generally speaking these models are less common, which means less variety/range, and as mentioned earlier, they tend to be less efficient or more expensive than a top freezer model, meaning they could cost you more to run in the long term.

What is the purpose of a refrigerator?

Refrigerators are used mainly in keeping the refrigeration space cold. Refrigerators are also used for medical and scientific purposes for the same reason. Refrigerators in the home are used to extend the shelf life of perishable foods and cool food and drink that tastes better cold.

Why is my Refrigerator not cooling?

Dirty condenser can be the cause for your refrigerator not cooling problem.. If the condenser is dirty, the compressor will cut off on the overload. (A thermostat that is on the side of the compressor that cuts it off if it overheats). Often when this happens you’ll hear a clicking noise about 2 to 3 minutes apart.

How does refrigerator or freezer work to keep things cold?

Freezers don’t actually work by making things cold. They work by taking away the heat. They use a process of evaporation to draw out heat and leave the food in your freezer frozen. To complete this process, some very special components are used.

How does an energy efficient refrigerator work?

THE NEW WAVE OF ENERGY EFFICIENT REFRIGERATORS. In a manual-defrost model, the coils are built right into the sides of the freezer. Meanwhile, the cold, vaporized refrigerant is piped to the compressor, which increases the pressure on it and pumps it to the condensor coils, typically located behind the refrigerator.