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Home >> Audi >> 2023 >> A5 Quattro Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 33 (Air Conditioning (Refrigerant R134A Servicing (Safety Precautions)) (Coupe)) >> 87 Air Conditioning >> A/C System, General Information >> Refrigerant R134A Properties >> Vapor Pressure

Vapor Pressure

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In a partially filled, closed reservoir, the quantity of refrigerant evaporating from the surface equals the quantity returning to the liquid state as vapor particles condense. This state of equilibrium occurs under pressure and is often called vapor pressure. The vapor pressure depends on the temperature. Refer to REFRIGERANT R134A VAPOR PRESSURE TABLE  "Vapor Pressure Table".