Can The Same Equipment Be Used On High And Low Pressure Refrigerants?

Refrigerants are classified as high pressure or low pressure based on their boiling points and the pressures required to maintain them in their liquid state. Low-pressure refrigerants have a boiling point below -26°C (-15°F) at atmospheric pressure, while high-pressure refrigerants have a boiling point above -26°C (-15°F) at atmospheric pressure.

The difference between high and low pressure refrigerants is the chemical makeup properties of the refrigerant, which produce the desired characteristics for the application. For example, low-pressure refrigerants are used in large commercial systems, while high-pressure refrigerants are used in smaller residential systems.

According to an article by Cold Shot Chillers, the most popular refrigerant used in chiller plants is ammonia (R717) which is not low pressure. It has the highest heat absorption rating, making it ideal for use in smaller, portable chiller units negating the need for large cooling plants.

Water is also a common refrigerant used in chiller plants because it is inexpensive and easy to find. It is used in nearly all chiller plants because it is an excellent conductor of heat, making it ideal for chilling large quantities of water quickly.

Other refrigerants that are commonly used in chiller plants include R407C, R404A, R410A, R22, and R134A.

RefTec International Systems provides the HVAC industry with equipment that can handle both low- and high-pressure refrigerants. The Allvac can provide portable recovery of both at a very high speed.



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