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Contact Info

  • +91 020 27476677, +91 9960634877
  • craftsmanent@gmail.com, craftsmanent@bsnl.in
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Dryers

 

ADT

Coldspell

  • Large condensor for high ambient temperatures
  • Microprocessor based controller
  • Anti-recycle feature for compressor protection
  • Low pressure drop advanced heat exchangers saves energy
  • Optimised for 250C ambient and 350C inlet air temperature as per ISO 7183

Specification of Dryer

Model Flow in
scfm
Power Consumption in KW End
Connection
Dimensions in mm Weight
in Kg
Max.
Working
Pressure
R 134a R 407c H W D
Coldspell 20 20 0.36 1" BSP 395 400 430 55 16
Coldspell 40 40 0.36 1" BSP 525 450 475 55 16
Coldspell 50 50 0.36 1" BSP 525 450 475 55 16
Coldspell 60 60 0.36 1" BSP 525 450 475 55 16
Coldspell 80 80 0.85 1" BSP 675 485 525 70 16
Coldspell 100 100 0.85 1" BSP 675 485 525 70 16
Coldspell 150 150 1.02 1½" BSP 852 670 700 110 16
Coldspell 200 200 1.40 1½" BSP 852 670 700 130 16
Coldspell 250 250 1.40 1½" BSP 852 670 700 130 16
Coldspell 300 300 1.85 2" NB 1020 680 980 240 14
Coldspell 400 400 2.10 2" NB 1020 680 980 260 14
Coldspell 500 500 2.40 2" NB 1020 680 980 290 14
Coldspell 650 650 3.30 2" NB 1020 1000 1400 350 14
Coldspell 800 800 4.00 3" NB 1020 1000 1400 490 14
Coldspell 1000 1000 4.80 3" NB 1020 1000 1400 580 14
Coldspell 1250 1250 5.20 4" NB 1020 1000 1400 620 14
Coldspell 1500 1500 6.00 4" NB 1100 1250 1750 900 14
Coldspell 2000 2000 8.00 6" NB 1100 1600 1940 1020 14

How to Order

Requirement : Inlet flow
working pressure
Inlet temperature
Ambient temperature
100 scfm
5 Kg / cm2
45o C
38o C
Referring tables : Factor Pi
Factor Ti
Factor Ta
= 0.84
= 1
= 1
Dryer capacity required : Flow
Pi x Ti x Ta
= 100
0.84 x 1 x 1
= 119 scfm
Choose the nearest higher model :   = Coldspell 150

Correction Factor

Inlet Air Temperature oC 30 38 45 50
Correction Factor (Ti) 1.14 1.08 1 0.75
Inlet Pressure Kg/cm2 5 7 9 12
Factor (Pi) 0.84 1 1.11 1.21
Ambient Temperature oC 25 30 38 43
Factor (Ta) 1.36 1.18 1.0 0.86

Ordering Code

DP Series

  • Extensive Mimic display with Electronic Controller
  • Energy saving purge economiser
  • Stainless Steel Filters Catridges
  • Fabrication Code : IS 2825
  • Dewpoint better than -40o C

Optional :

  • Fabrication Code : ASME SEC VIII DIV I
  • Dewpoint based changeover

Highlights

Purge Economiser : By setting a switch in the controller at a percentage of maximum flow, the controller will close the purge valve when sufficient purge air has been used. This reduces purge loss according to air usage. The purge loss, which is 14% normally reduces to as low as 5.6%.

No pressure spike : During changeovers ensures long desiccant life.

Selection Example
Requirement :
Flow Volume : 175 cfm
Working Pressure : 6 Kg / cm2
Inlet air Temperature : 45oc
Referring the Graphs : Factor (T) = 0.9
Factor (P) = 0.88
Dryer capacity required :
Flow volume 175
= 220.9 cfm
Factor (T) x Factor (P) 0.9 x 0.88
Choose the nearest higher model i.e, Model DP 384

Principle of Operation

Pre-filteration : The moisture laden compressed air passes through the pre filter, here moisture load is reduced through coalescence. Condensation is removed through the drain valve ADV1. At the oil filter oil vapours are removed completely, small level of water condensation is purged through the valve ADV2.

Drying : (Please refer figure) The Towers are filled with Activated Alumina as desiccant (Molecular sieve available as option). When air passes through Tower 1 which consists of "DRY" Desiccant, it gets completely dried, and passes through check valve and after filter. At the after filter, Desiccant fines are removed. Therefore dry compressed air passes out at the outlet.

Regeneration : (Please refer figure) Regeneration takes place in 2 stages a) De-pressurisation b) By passing Dry air. Tower II consists of fully moist desiccant at pressure. This is suddenly De-pressurised by opening the purge valve. Water molecules seep out of the desiccant and appear on the surface. "Super Dry" purge air passes through the Regeneration "Nozzle" and the desiccant bed thereby completely carrying away the water molecules. Tower II gets regenerated and is ready for the next drying cycle after the re-pressurisation.

Specification

Model Inlet
Flow
cfm
End
Connection
Dimensions (mm) Weight
Kg
Height Width Depth
DP - 192 114 1" BSP 2000 750 650 380
DP - 288 172 1" BSP 2050 750 650 440
DP - 384 229 1½" BSP 2100 750 650 550
DP - 480 286 2" NB 1670 1100 1300 620
DP - 576 343 2" NB 1880 1100 1300 700
DP - 768 458 2" NB 1810 1200 1300 850
DP - 960 572 2" NB 1830 1300 1300 950
DP - 1440 860 3" NB 1975 1500 1500 1265
DP - 1920 1144 3" NB 2100 1500 1500 1575

  • Operating voltage - 230 V AC 50 Hz 1 Ph.
  • For any other capacity contact factory.
  • Specifications are subject to change without notification.