Refrigeration compressed air dryers

OMEGA AIR: RDP - Refrigeration compressed air dryer Compressed air contains contaminants such as water, oil and particulates which must be removed or reduced to the acceptable level based on specific application requirements. Standard ISO 8573-1 specifies air purity/quality classes for these contaminants. Humidity (water vapour content) is expressed in the terms of Pressure Dew Point (PDP) where Dew point is the temperature at which air is 100% saturated with moisture. When the temperature of the air reduces to or below the dew point, condensation will occur. Reduction of water content down to...

Hot gas by-pass valve The main purpose of hot gas bypass valve is to prevent condensate from freezing on the surface of the evaporator coil when the system is operating at extremely low load conditions. Integrated heat exchanger The incoming air enters into an air-to-air pre-cooler, where incoming air is heated by output air. Then air passes through a refrigerant heat exchanger where the air is cooled by the cold evaporating refrigerant. This process causes moisture to condense in demister into liquid water. Condensate is drained from the system by condensate drain. Efficent cooling system The...

OMEGA AIR: RDP - Refrigeration compressed air dryer Heat exchanger module Heat exchanger air/air - pre-cooler Evaporator air/refrigerant Demister Compressed air input - wet Compressed air output - dry Compressor Condenser Hot gas by-pass valve Gas filter Expansion valve or capillary tube Electronic condensate drain Controller

OMEGA AIR: RDP - Refrigeration compressed air dryer

OMEGA AIR: RDP - Refrigeration compressed air dryer Operation Operation of refrigeration compressed air dryer can be divided into two independent circuits: COMPRESSED AIR CIRCUIT Warm and humid compressed air enters into three-stage heat exchanger. In the first stage “air-air” (a) incoming air is precooled by cold outlet air. This stage is important from energy saving point of view as well as for stable operation of entire system. In the second stage “air-refrigerant” (b) the air is cooled by the cold refrigerant. In this stage water vapour condenses into liquid water. In the third stage “demister”...

OMEGA AIR: RDP - Refrigeration compressed air dryer Technical data TECHNICAL DATA CORRECTION FACTOR FOR OPERATING PRESSURE CHANGES Operating pressure [bar] 4 5 6 7 8 10 CORRECTION FACTOR FOR DEW POINT CHANGES 3 37,4 Correction factor Correction factor CORRECTION FACTOR FOR INLET TEMPERATURE CHANGES CORRECTION FACTOR FOR AMBIENT TEMPERATURE CHANGES Temperature [°C] Temperature [°F] Correction factor Correction factor Data refer to the following nominal condition: Ambient temperature of 25°C, with inlet air at 7 barg and 35°C and 3 °C pressure Dew Point (-20,5°C atmospheric pressure Dew Point)....