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PAHARPUR SERIES CF3 FIBREGLASS COUNTERFLOW COOLING TOWER Paharpur's series CF3 induced draft cooling tower represents the culmination of more than 50 years of counter flow design experience. With polyvinyl chloride fill and glass reinforced polyester structural, basin and casing, the series CF3 continues a tradition of excellence.
Improvements and innovations in structure and component designs produce in the series CF3 a heavy-duty, energy efficient and dependable cooling tower unrivaled in the industry. Perhaps most importantly, all major components responsible for this breakthrough have been developed, manufactured, applied and guaranteed by one single source company – Paharpur. Without question, the series CF3 establishes a new state of the art in counter flow cooling tower design.
PAHARPUR'S INTEGRATED SYSTEMS DESIGN Although Paharpur's original motivation in the design and manufacture of all major cooling tower components was to assure dependability and longevity, a secondary benefit quickly became of prime importance. That benefit was the ability to coordinate a variety of components of known design characteristics into a cooling tower of assured thermal performance predictability.
Paharpur's philosophy of component design has been – and continues to be – to assess the value of a development only in terms of its effect upon the total cooling tower system. Particular fills, fans, fan cylinders, etc., tend to optimize within a very narrow range of tower configurations and design parameters. Consequently, a considerable variety of individual components is required in order to achieve a near-ideal combination for any operating circumstance. And it is imperative that these components be designed and rated within a cooling tower system context.
Paharpur has all such variety of components. Their capabilities are well known because they were designed and manufactured by Paharpur.
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FILL: Vacuum formed polyvinyl chloride (PVC) sheets are solvent welded into a cross corrugated configuration to provide maximum heat transfer surface with minimum pressure drop and pump head.
ELIMINATOR: Drift eliminator panels are formed from PVC sheets into a cellular configuration which forces exhaust air into three complete directional changes to eliminate water droplets from the air stream. The 3-pass eliminator provides maximum efficiency in elimination at the very minimum in horse power consumption.
SPEED REDUCER: Designed and manufactured to furnish extended service life in industrial water cooling applications, Paharpur gear reducers have an overall mechanical efficiency of 95%. Their rugged design has been proven by years of field operational experience worldwide.
FAN: Designed, tested and manufactured by Paharpur. Fan materials include cast aluminium alloy, glass reinforced polyester, and glass reinforced epoxy. Fan sizes and
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materials are selected to provide the most efficient solution to any cooling tower application requirement.
DRIVE SHAFT: Utilizing floating tubular shafts and neoprene flexible elements. Paharpur designed and manufactured drive shafts do not require lubrication and are dynamically balanced prior to shipment.
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DISTRIBUTION SYSTEM: Uniform hot water distribution is guaranteed by Paharpur's injection molded polypropylene nozzle, incorporating a unique diffusion ring for spray development distribution. This nozzle system is specially designed to function under low operating heads for greater energy efficiency. Large diameter orifices contribute to overall reduced maintenance costs.
FAN CYLINDER: Fan cylinders are Paharpur designed and manufactured glass reinforced polyester (GRP), molded to provide a large entrance flair, smooth approach to the fan, and close tip clearances for maximum efficiency and reduced operating costs.
STRUCTURE: Structural components are glass fiber pultruded composite. Columns are 65 X 65 nominal box section with a minimum 5 mm wall thickness and carry loads to anchor castings. Columns are spaced on no greater than 1520 mm centers both longitudinally and transversely. Diagonal and other structural connectors are through bolted.
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Table 1 Tower Engineering Data
Model No.
Nominal Tons (TR)*
Overall Length L (mm)
Overall Width
W (mm)
Total Height
H (mm)
CW Inlet Location A (mm)
No. of CW
Inlets (N)
Fan Dia. (“)
Fan
RPM
Motor
HP
Gearbox
Series
Gearbox
Ratio
Drive Shaft Type
32441 109
2546
2546
4702
610
1
72
535
7.5
20T
2.71:1
6Q 32442 119 10
32443 135 15
32451 138
3146
2546
4702
305
1
72
535
7.5
20T
2.71:1
6Q 32452 152 10
32453 171 15
32454 188 20
32552 184
3146
3146
4733
305
1
96
444
10
20T
3.27
6Q 32553 211 15
32554 231 20
32555 248 25
32562 198
3766
3146
4733
0
1
96
444
10
20T
3.27
6Q
32563 227 15
32564 250 20
32565 273 25
32566 290 30
32662 193
3766
3766
4733
0
1
120
266
10
22.2
5.5:1
6Q
32663 221 15
32664 244 20
32665 262 25
32666 279 320
30 4.56:1
32667 307 40
32672 252
4366
3766
4733
915
2
120
266
10
22.2
5.5:1
6Q
32673 288 15
32674 317 20
32675 342 25
32676 362 320
30 4.56:1
32677 401 40
32772 288
4366
4366
4812
915
2
144
320
10
22.2
4.56:1
6Q
32773 329 15
32774 363 20
32775 391 25
32776 415 30
32777 455 40
32778 493 50
Continued
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Table 1 (Continued) Tower Engineering Data
Model No.
Nominal Tons (TR)*
Overall Length L (mm)
Overall Width
W (mm)
Total Height
H (mm)
CW Inlet Location A (mm)
No. of CW
Inlets (N)
Fan Dia. (“)
Fan
RPM
Motor
HP
Gearbox
Series
Gearbox
Ratio
Drive Shaft Type
32782 310
4986
4366
4812
610
2
144
320
10
22.2
4.56:1
6Q
32783 355 15
32784 390 20
32785 421 25
32786 447 30
32787 493 40
32788 531 50
32882 345
4986
4986
4812
610
2
168
320
10
22.2
4.56:1
175
32883 395 15
32884 435 20
32885 467 25
32886 496 30
32887 546 40
32888 587 50
32889 626 60
32892 370
5586
4986
4812
915
2
168
320
10
22.2
4.56:1
175
32893 423 15
32894 466 20
32895 502 25
32896 533 30
32897 587 40
32898 630 50
32899 668 60
32992 392
5586
5586
4812
915
2
168
320
10
22.2
4.56:1
175
32993 449 15
32994 494 20
32995 532 25
32996 565 30
32997 622 40
32998 672 50
32999 715 60
* Nominal tons are based on 95°F hot water, 85°F cold water, 78°F wet bulb and 3 USGPM per TR. Multi-cell models are available with same or double air inlet openings that of single cell models. Details are available on request.