The refrigerators in our homes are used for lowering the temperature of a particular confined space effectively in comparison to the surroundings. The old refrigerators used a gas known as CFC or Chlorofluorocarbon.
This gas is also known as Freon. Since it was found to deplete the ozone layer if it leaked, the modern refrigerators use a refrigerant gas known as HCFC-134a or tetrafluoroethane. This is environment-friendly and is supplied by many chemicals suppliers.
Most refrigerators today use electric motor and compressor to squeeze out the HFC gas. When it is compressed, the gas heats up as its pressure increases. When the compressed gas passes through the coil present at the back of the fridge, the temperature of the warmer gas losses its heat to the surrounding atmosphere. This is in accordance with the law of thermodynamics. When the HFC reaches a temperature of -26.6 degree Celsius it changes its state and turns into liquid. It works on the principle that gas cools on expansion.
The liquid gas then flows through a very small hole known as expansion valve. The liquid squeezes out through this hole. There remains a low-pressure area in between the valve and compressor as the compressor continuously pulls out the ammonia gas out of the other side.
Vaporizing occurs when the liquid HCF boils and changes to its gaseous state under a low pressure area. The coils go through the regular parts of the fridge and the freezer, to extract the heat out of the compartments. Thus the inside area of a refrigerator remains cold. This takes place in the form of a cycle where the gas is sucked up again and again by the compressor. This way, things inside your refrigerator remain fresh for long.
To know more about refrigerant gases and other chemicals logon to http://www.kplintl.com/
Most refrigerators today use electric motor and compressor to squeeze out the HFC gas. When it is compressed, the gas heats up as its pressure increases. When the compressed gas passes through the coil present at the back of the fridge, the temperature of the warmer gas losses its heat to the surrounding atmosphere. This is in accordance with the law of thermodynamics. When the HFC reaches a temperature of -26.6 degree Celsius it changes its state and turns into liquid. It works on the principle that gas cools on expansion.
The liquid gas then flows through a very small hole known as expansion valve. The liquid squeezes out through this hole. There remains a low-pressure area in between the valve and compressor as the compressor continuously pulls out the ammonia gas out of the other side.
Vaporizing occurs when the liquid HCF boils and changes to its gaseous state under a low pressure area. The coils go through the regular parts of the fridge and the freezer, to extract the heat out of the compartments. Thus the inside area of a refrigerator remains cold. This takes place in the form of a cycle where the gas is sucked up again and again by the compressor. This way, things inside your refrigerator remain fresh for long.
To know more about refrigerant gases and other chemicals logon to http://www.kplintl.com/