What is the vapor pressure at 20°C?

Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid form at a given temperature. At 20°C, different substances have specific vapor pressures, which are often provided in engineering tables or charts for refrigerants.

The selection of 110 PSIG as the vapor pressure at 20°C can be accurate for certain refrigerants commonly used in industrial refrigeration systems when referenced against the vapor pressure tables. It's crucial to refer to the correct refrigerant for the calculation, as different substances will have unique vapor pressures at this temperature.

Understanding vapor pressure is essential in refrigeration because it directly influences the efficiency and operation of refrigeration systems. The vapor pressure indicates how much pressure the vapor form of the refrigerant exerts, which is critical for system design, calculations, and ensuring safe operating conditions. Planning for this pressure is vital during maintenance and repairs, as working beyond recommended vapor pressures can compromise system integrity or safety.

Thus, knowing the specific vapor pressure at a given temperature, such as 110 PSIG at 20°C for a specific refrigerant, is integral for those operating or managing refrigeration systems in adherence to industry standards and effective performance.