Which refrigerant is used in Vapour compression cycle?
The most common include ammonia, Freon (and other chlorofluorocarbon refrigerants, aka CFCs), and HFC-134a (a non-toxic hydrofluorocarbon). The Vapor-Compression Refrigeration Cycle is comprised of four steps. The conceptual figure of the process shows the PV changes during each part.
Which fluid can be used in Vapour refrigeration?
Fluids such as air, water, ethyleneglycol/water mixture, propyleneglycol/water mixture, brines, or other heat transfer fluids, etc., can be used at the evaporator depending on the temperature and requirements of the particular application.
What is the function of refrigerant fluid in a refrigerator?
In refrigeration systems, a refrigerant fluid acts as a heat sink (i.e. accepts heat) at a low temperature and rejects the heat at a higher temperature. Moving the heat from a lower to a higher temperature requires work to be done on the refrigerant.
What is the use of condenser coils present in the refrigerator?
The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser.
What is the purpose of a condenser?
The purpose of the condenser is to receive the high-pressure gas from the compressor and convert this gas to a liquid. It does it by heat transfer, or the principle that heat will always move from a warmer to a cooler substance.
How does a refrigerator work step by step?
Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas. This process, called evaporation, cools the surrounding area and produces the desired effect.
What are the basic parts of a 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 the most important part of a refrigerator?
The compressor is one of the most important parts. It moves the refrigerant throughout the entire machine, creating that cooling effect we want for our food. A variety of issues can arise if the compressor gets too dirty or dusty, or if it breaks.
Which gas is used in Godrej refrigerator?
HFC-134a
What happens when fridge runs out of gas?
As your fridge slowly runs out of the refrigerant, the foodstuff inside starts freezing in the fridge part of your refrigerator. The salad leaves start to turn black, which is the first sign of frostbite. The tomatoes stocked in the vegetable tray freeze, and so do the eggs as well as the milk.
Which gas is used in Samsung refrigerator?
chlorofluorocarbons (CFCs)
Which gas is used in freeze?
Many industrial production processes require rapid cooling and freezing capabilities. Liquid nitrogen (LIN) and carbon dioxide (CO2) are extremely effective cooling agents due to the low boiling point of LIN (-196°C) and the low sublimation point of CO2 (-78.5°C).
Which one is used instead of CFC in refrigerator?
Because CFCs contribute to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons (HFCs) including R-410A and R-134a.
Is ammonia gas used in refrigerator?
Ammonia Gas or Refrigerant R717 Ammonia is amongst the oldest of all the refrigerants and still used widely in the refrigeration applications. It is also the only refrigerant outside the halocarbons group, still being used to a great extent. Ammonia refrigerant is commonly known as R717 and its chemical formula is NH3.
What ammonia is used in refrigeration?
Ammonia, frequently used commercially in large freezing and refrigeration plants is also called “anhydrous ammonia” because it contains almost no water (it is 99.98% pure).