Cooling Tower Products:
Fill Media
Since there are many different systems to which cooling towers are applied, there are many different fills used in them, each with their own benefits. The vast array of fills on the market can make your head spin as you review competing offerings. With our experience in and knowledge of cooling towers and fills, we can help make sense of your options to find the best solution to meet your needs.
Cross-Fluted (CF) Fills
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
CF1200 | 0.46 [12] | 26 | 69 [226] | 30° | Has special drainage tip to improve operating pressure drop |
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CF1900 | 0.75 [19] | 16 | 48 [157] | 31° |
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CF1900SS | 0.75 [19] | 16 | 48 [157] | 27° | 304L stainless steel for high temperature applications |
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ThermaCross™ TX19 | 0.74 [19] | 16* | 47 [154] | 22° | *NOTE: 16 sheets in 11.8in [300mm] pack width Patented by Brentwood Industries with Bill Miller, P. E. listed as an inventor |
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CFS3000 | 1.2 [30] | 10 | 31 [102] | 30° |
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Offset-fluted (OF) Fills
Offset-Fluted (OF) fills blend the benefits of Cross-Fluted (CF) fills and Vertical-Fluted (VF) fills into products that generally provide relatively high efficiency per volume along with greater resistance to fouling/plugging than cross-fluted fills. These fills were introduced after purely CF fills and purely VF fills showed the effects of opposite ends of the spectrum in fill designs. CF fills revolutionized cooling tower designs because they allowed much smaller fill depths to meet cooling requirements. Unfortunately, their susceptibility to fouling was a rude shock to customers who had historically given little thought to fouling based on towers that were built around the splash fills that preceded film fills. Those costly lessons pushed the market to VF designs to address the fouling problems, but the VF fills gave back a good bit of the performance improvements that the CF fills offered. As the need for greater performance became a market driver, fill designers developed OF fills to bridge the gap between the CF and VF products.
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
OF21MA | 0.82 [21] | 14.67 | 45 [148] | 0°/27° | Available air travel depths of 11.8in [300mm] and 23.6in [600mm] |
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Vertical-fluted (VF) Fills
Vertical-Fluted (VF) fills provide the greatest fouling resistance of all film fills since they maximize water film velocities and have no crossover points. However this greater resistance to fouling also leads to a reduction in efficiency compared to Cross-Fluted (CF) and Offset-Fluted (OF) fills. The benefit of VF fills is that for dirtier water applications, they can provide a consistent level of performance over time. This is as opposed to CF or OF fills that might perform very well early on but end up plugging and losing most of their efficiency, potentially in even a short period of time, if the water quality is poor enough.
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
VF19 PLUS | 0.75 [19] | 16 | 47 [154] | 0° |
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AFVF19 | 0.78 [20] | 15.25 | 42 [138] | 0° |
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VF3800 | 1.5 [38] | 16 | 40 [131] | 0° | Has minimal microstructure to increase fouling resistance |
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VF5000 | 2.0 [50] | 12 | 30 [98] | 0° | Has minimal microstructure to increase fouling resistance |
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Herringbone Crossflow (XF) Fills
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
XF75Pro | 0.75 [19] | 16 | 51 [167] | N/A | Specially designed for crossflow applications. |
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XF75ProIL | 0.75 [19] | 16 | 51 [167] | N/A | Specially designed for crossflow applications. Includes an Integral Louver (IL) to prevent splash-out. |
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XF75ProID | 0.75 [19] | 16 | 51 [167] | N/A | Includes an Integral Drift Eliminator (ID) to prevent drift. |
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Trickle Fills
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
HTP20 | 0.78 [20] | 15.25 | N/A | 15° | Has special drainage tip to improve operating pressure drop. Patented by Brentwood Industries with Bill Miller, P. E. listed as inventor. |
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Splash Fills
Product | Sheet Pitch in. [mm] | No. of sheets/1ft [305mm] of pack width | Specific Surface Area ft2/ft3 [m2/m3] | Flute Angle | Comments | Common Applications |
HTP25 | 1.0 [25.4] | 12 | N/A | 0° | Vertical-fluted (VF) macro-corrugation. Over 3,600 drip points per ft3 (over 127,000 drip points per m3) |
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Product | A-Frame Spacing in. [mm] | No. Panels/ft3 [/m3] | Volume Ratio Installed vs Shipped | Typical Application | Comments | Common Applications |
TurboSplash SF100 | 4 [101.6] | 3 [106] | ~5:1 | Crossflow | Ships nested – compact for shipping |
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TurboSplash SF150 | 6 [152.4] | 2 [70.7] | ~7:1 | Counterflow | Ships nested – compact for shipping |
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