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Compressed Air Dryer

Compressed Air Dryer
Compressed Air Dryer
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Product Code : 07
Brand Name : ANNAIR CONTROLS
Product Description

Compressed Air Dryer

Saturated compressed air enters to Air to Air heat exchanger, where it is pre-cooled by out going cold dry air. Highly effective Pre- cooler reduces the temperature considerably, and enables to use smaller & economical refrigeration system. Then the pre-cooled, relatively low temperature compressed air enters to Air to Refrigerant heat exchanger, where it is cooled down to +3°C (Pressure Dew Point). At this temperature, moisture in vapour form condensed to liquid form, and separated from the compressed air by moisture separator and discharged to drain port through automatic drain valve. The cold dry compressed air passes back to Air to Air Heat exchanger, and gain temperature by exchanging heat with incoming warm air. The dry air coming out from the dryer is ready to use for instrument and process air applications.

Compressed Air Dryer is one of the essential parts of any compressed air system. The performance and efficacy of the compressed air system is enhanced using high-tech dryers that provide proper functioning required in the process.

Single-tower, deliquescent dryer uses less energy to offer pressure dew point suppression up to 50°F. The estimated power requirement is around 0.2 kW/100 cfm.

Refrigerant-type dryer is one of the most common dryers widely used to attain the pressure dew point up to 39°F. It can easily to provide cycle on and off based performance on air flow that saves power and energy. Around 0.79 kW/100 cfm power is needed.

Twin-tower, desiccant-type dryers are designed to remove the moisture from the air at a pressure dew point of –40°F. In pressure-swing regenerative dryer, the purge air id needed from 10 to 18 % of the dryer’s rating.

Heat-of-compression dryers use the heat generated in the process of compression to achieve desiccant regeneration.

Membrane-type dryers are available without moving parts to attain dew points of 40°F. They are available with a range of advantages from low installation cost to heavy-duty design that make them perfect to be used outdoors. In addition to this, they can also be used in hazardous atmospheres. The total power requirement of these dryers is 3 to 4 kW/100 cfm.
 
How To Select a Dryer?

The compressed air dryer should be selected on the basis of essential pressure dew point as well as cost of operation. When less than 35°F pressure dew point is necessary, a refrigerant-type dryer cannot be used. The pressure drop of 3 to 5 psi is attained through a compressed air dryer and must be taken into account in the arrangement requirements.
 
Efficiency of Dryer Part Load:

Load efficiency of air dryer is one of the important factors to onside while assessing its performance. It is subject to part loaded circumstances where the flow, temperature and pressure are lower than the rated moisture loading. Some dryers convert their energy consumption and save on operating costs. On the other hand, some determines the turn down of a refrigerated dryer.

Salient Features:

  • CFE free, Eco-friendly refrigerant
  • Two stage effective moisture seperation
  • Lower power consumption
  • Built with necessary protectors for electrical & refrigerant system
  • Most modern refrigerant system components and pressure switches
  • Compact design, requires less floor space
  • Working pressure up to 40 kg/cm²

SPECIFICATION

Inlet pressure (kg/cm²)

20

25

30

35

40


Correction factor (K1)

0.87

0.94

1

1.05

1.09


Ambient temperature (°C)

25

30

35

40

45

50

Correction factor (K2)

1.20

1.10

1.05

1.00

0.9

0.95

Inlet temperature (°C)

30

35

40

45

50

55

Correction factor (K3)

1.20

1.15

1.07

1.00

0.88

0.75

TECHNICAL SPECIFICATION

 

Model no. APSR 25 APSR 45 APSR 60 APSR 80 APSR 100 APSR 150 APSR 200 APSR 250 APSR 300 APSR 400
Capacity CFM 25 45 60 80 100 150 200 250 300 400
Working Pressure kg/cm² 40 40 40 40 40 40 40 40 40 40
Connections BSP (F) ½'' ½'' ½'' 1'' 1 1½'' 1½'' 1½'' 2'' 2''
Refrigerant R 134a R 134a R 134a R 134a R 134a R 134a R 134a R 134a R 134a R 134a
Power supply V/Ph 220/1 220/1 220/1 220/1 220/1 220/1 220/1 220/1 220/1 220/1
Condensor Type Air Air Air Air Air Air Air Air Air Air
Nominal Power Consumption (kw) 0.21 0.21 0.39 0.39 0.66 0.66 1.02 1.4 1.4 1.78
Dimensions (mm) Length L 400 400 400 500 500 650 650 650 750 750
Depth D 550 550 550 550 550 700 700 700 900 900
Height H 580 580 580 700 700 1000 1000 1000 1150 1150
Approx. Weight (kgs.) 40 42 46 65 70 90 100 110 130 145

 

 



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