A Good Refrigerant Should Have

Answer: A – High latent heat of vaporization and low freezing point.

A good refrigerant should have high latent heat of vaporization and low freezing point.

Solution:

A good refrigerant should have high latent heat of vaporization and a low freezing point. If we understand the necessary characteristics of the ideal refrigerant, we may understand it better.

Required Properties of Ideal Refrigerant:

• At the evaporator pressure, a refrigerant should have a high latent heat of evaporation. A strong refrigerating effect per kilogram of circulated refrigerant is produced by the high latent heat.
• Both the boiling and freezing points of the refrigerant should be low.
• It must have high latent heat and low specific heat. Because high latent heat at low temperatures enhances the refrigerating effect per kilogram of refrigerant, whereas high specific heat decreases it.
• It must have high critical pressure and temperature to prevent high power requirements.
• It should have a small specific volume to minimize the compressor’s size.
• The evaporator and condenser must be kept at both positive pressures to prevent air leakage into the system and low enough to minimize material costs.
• It should not be toxic, corrosive, combustible, or explosive.
• When a leak occurs in the system, it shouldn’t have any negative consequences on the food or materials that are being stored there.
• It must be highly miscible with lubricating oil and not require a suitable lubricating oil reaction in the system’s temperature range.

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