Introduction
In one of our past articles we inspected how a fridge cools our food and other substances.
This is just conceivable through the property of the refrigerant which cools substance.
So what is a refrigerant and what are these properties that permit it to cool substances.
What Is A Refrigerant
A refrigerant is a substance or mix, generally a liquid, utilized in a heat pump and refrigeration cycle.
It is capable of removing heat from another body or substance.
Ice cold water, cold air and so on can be treated as a refrigerants.
Wanted Properties of a Refrigerant:
1. Vapour thickness:
To empower utilization of more modest compressors and other hardware the refrigerant ought to have more modest vapour thickness.
This is necessary for faster cooling of substances.
2. Enthalpy of vaporization:
To guarantee greatest heat removal during refrigeration, a refrigerant ought to have high enthalpy of vaporization.
This heat removal is the basis of refrigeration.
So the faster the heat removal the faster the cooling of substances.
3. Heat Conductivity:
Heat conductivity of the refrigerant ought to be high for quicker heat transfer during condensation and dissipation.
Even though heat removal is high, if the conduction is low, cooling cannot take place.
4. Dielectric strength:
In hermetic arrangements, the engine windings are cooled by refrigerants vapour on its way to the suction valve of the compressor.
Consequently, dielectric strength of refrigerant is a significant property in hermetically sealed compressor units.
5. Critical temperature:
To have huge range of isothermal energy transfer, the refrigerant ought to have critical temperature over the condensing temperature.
6. Specific heat:
To have least change in entropy during the throttling cycle, the specific heat ought to be made minimum.
For this, fluid saturation line should be almost vertical.
7. Leak tendency:
The refrigerant may spill out of the framework.
The issues with spillage are wearing out of joint or the material utilized for the creation of the framework.
A denser refrigerant will have less inclinations to spill when contrasted with higher density refrigerant.
The recognition of holes ought to be not difficult to avoid loss of refrigerant.
Spillage can be distinguished rapidly if the refrigerant has unmistakable color or scent.
8. Harmfulness:
The refrigerant utilized in cooling, food protection and so forth ought not be poisonous in nature.
Since they will come into contact with people.
refrigerants will influence human safety on the off chance that they are poisonous.
So it is important to note the poisonous type of refrigerants, so as to avoid them.
9. Cost of refrigerants:
The amount of refrigerant utilized in industries is extremely less.
The expense of the refrigerants is for the most part high when contrasted with different synthetic compounds in the business.
Extremely low industry professional won’t make a necessary move to control the holes.
10. Availability:
Refrigerants ought to be available near the usage point.
It should be sourced and obtained within a brief period to enable the client in the event of holes, maintenance schedules, and so on.
Conclusion
So this liquid called a refrigerant makes it possible for cooling to happen in the refrigerator.
Also, it does so easily with every one of it’s properties that have been stated previously.
