Fill Media Selection Guide For Crossf low Cool ing Towers

Fill Media Selection Guide FOR CROSS FLOW COOLI NG TOWE R S

This selection guide provides an easy

tool to evaluate various Marley PVC heat

transfer fill types and configurations

...to determine the good, better, and best options for your

fill replacement projects.

PVC “fill” media is at the heart of the cooling tower’s heat

transfer system and thermal performance. Fill sheets spread

process water over their surfaces into a thin film to provide

maximum exposure to air flow. Fill sheets provide much more

water/air exposure per cubic foot than splash-type fill.

Marley crossflow fill media is thermoformed from PVC with

a flame-spread rating less than 25 per ASTM E-84. Highly

efficient cellular drift eliminators and louvers are integrally

molded within the sheets. Both the drift eliminators and

louvers enhance tower performance, helping to prevent

water from escaping the cooling tower and evenly distribute

air flow.

When selecting replacement heat transfer fill, it is important

to weigh several factors including thermal performance and

drift rates, ease of handling, installation complexity and labor

costs. SPX Cooling Technologies offers a range of PVC fill

types and configurations to meet the specific requirements

of your fill replacement project.

Marley® Fill Options MX75 MBX MBX "EZ Pack"

Fill Characteristics

Configuration Type Hanging Sheet Pack Pack

Thermal Performance Best Better Good

Drift Best Better Good

Installation Labor High Medium Low

Ease of Handling/Durability Strong Stronger Strongest

Flexibility: Non-Marley Towers No Yes; < 4' AT Yes; up to 5' AT

Field Modification; Reuse; Cutting No No Yes*

Air Travel All AT Up to 4' AT Up to 5' AT

Supports Fill Tubes Grating Sheet Metal

Cleaning Easy Easier Easiest

Fill Media Selection Guide FOR CROSS FLOW COOLI NG TOWE R S

Marley® Fill Options MX75 MBX MBX "EZ Pack"

Fill Characteristics

Configuration Type Hanging Sheet Pack Pack

Thermal Performance Best Better Good

Drift Best Better Good

Installation Labor High Medium Low

Ease of Handling/Durability Strong Stronger Strongest

Flexibility: Non-Marley Towers No Yes; < 4' AT Yes; up to 5' AT

Field Modification; Reuse; Cutting No No Yes*

Air Travel All AT Up to 4' AT Up to 5' AT

Supports Fill Tubes Grating Sheet Metal

Cleaning Easy Easier Easiest

REPLACEMENT CROSSFLOW FILL COMPARISON CHART

*MBX "EZ Pack" Fill can be field modified easily to the correct pack height and air travel configuration for various cooling tower models, including Marley NC 8400, 8300 and earlier series as well as crossflow towers from other manufacturers.

2' Elim 3' Louver

NC8400

2' Elim 2.5' Louver

Other Manufacturers' Towers

2' Louver2' Elim

NC8300 and Earlier

FSG-18 | ISSUED 08/2018

COPYRIGHT © 2018 SPX Cooling Technologies, Inc. All rights reserved.

In the interest of technological progress, all products are subject to design

and/or material change without notice.

SPX COOLING TECHNOLOGIES, INC.

7401 WEST 129 STREET

OVERLAND PARK, KS 66213 USA

913 664 7400 | spxcooling@spx.com

spxcooling.com

Fill Media Selection Guide

Marley MBX Film Fill Marley MX75 Film Fill

The single most important component of a cooling tower is the fill. The efficiency of a cooling tower depends upon the fill’s ability to promote both the maximum contact surface, and the maximum contact time between air and water. And it must promote this air-water contact while imposing the least possible restriction to air flow.

MX75 is a hanging film type cooling tower fill which spreads the water into a thin film, flowing over large vertical surfaces, promoting maximum exposure to air flow. This type of fill provides much more water surface exposure per cubic foot than splash type fill.

Film fill offers greater cooling efficiency, so you can get colder water from your present splash-fill cooling tower without increasing fan horsepower. Or, if you choose, you can apply this improved efficiency to save horsepower producing the same cold water temperature.

MX75 incorporates highly efficient cellular drift eliminators, integrally molded within the fill sheets. Compared with previous designs, these eliminators reduce drift emissions from the tower by a factor of ten or more! Less drift means you save on your water bills and water treatment chemical expenses. And, you’ll virtually eliminate the nuisance caused by drift spotting on adjacent buildings and property. To save you even more, the drift eliminators discharge air directly toward the fan. Since the air is traveling in the right direction when it leaves the eliminators, you’ll save on fan horsepower.

Louvers are also integrally molded within the fill sheets preventing water from escaping and assuring precise air distribution throughout wide variations in airflow. Unlike towers equipped with separate external louvers, this fill operates virtually ice-free even in extremely cold weather.

MX75 is thermoformed from PVC with a flame spread rating less than 25 per ASTM E-84 and is considered self-extinguishing. Therefore, your risk of fire damage is minimal.

MX75 film fill complies with Cooling Technology Institute (CTI) Standard 136.

You’ll enjoy long service life with minimal maintenance because MX75 fill won’t rot, is impervious to corrosion and decay, and its wide sheet spacing prevents clogging.

Since MX75 has integral louvers and drift eliminators, extra support framing and retainers are not required. MX75 fill is available in air travels from 18" to 60" and can be installed in almost all crossflow cooling towers regardless of a cooling tower’s age or manufacturer.

MX75 film fill

Marley MBX fill is a high performing, bottom supported PVC pack fill with integral louvers and drift eliminators, specifically designed for the aftermarket. This fill will make installation easier and faster, while at the same time offering great cooling efficiency without major tower modifications.

MBX fill incorporates highly efficient cellular drift eliminators, integrally molded within the fill sheets. These eliminators may reduce drift emissions from the tower by a factor of 10 or more.

Louvers are also integrally molded within the fill sheets preventing water from escaping and ensuring precise air distribution throughout wide variations in airflow.

MBX fill packs are available in various heights and air travels from 24" to 48" and can be installed in almost any crossflow cooling tower regardless of tower age or manufacturer. Retrofit kits including MBX fill packs, fiberglass supports, stainless steel hardware and installation instructions are available.

MBX fill is manufactured from inert material, thus ensuring a long operating life with minimal maintenance. The wide sheet spacing prevents clogging and the integral drift eliminators do not require extra frames or retainers.

MBX is thermoformed from PVC with a flame spread rating less than 25 per ASTM E-84 and is considered self-extinguishing. Therefore, the risk of fire damage is minimal.

MBX film fill

Marley MBX "EZ Pack" Fill

Marley MBX EZ Pack fill is a high-performing, bottom-supported, two-piece PVC pack fill with integral louvers and drift eliminators, specifically designed for fill replacement projects. The contractor-friendly fill design makes installation fast and easy without requiring major tower modifications. The EZ Pack fill incorporates highly-efficient cellular drift eliminators, which are integrally molded into the fill sheets. These eliminators may reduce drift

emissions from the tower by a factor of 10 or more. Louvers are also integrally molded within the fill sheets, preventing water from escaping and ensuring precise air distribution throughout wide variations in airflow. MBX EZ Pack fill is available from the factory in various heights and air travels from 48" to 60". It can be stocked and modified on-site for the exact air travel and height dimensions needed for crossflow cooling towers – regardless

of tower age or manufacturer. Retrofit kits include fill packs and steel supports that require no hardware. MBX EZ Pack fill is stackable for use in modular towers, eliminating the need for mid-level structures. MBX fill is thermoformed from inert PVC for long service life and minimal maintenance. The PVC has a flame spread rating of 25 or less per ASTM-84 and is considered self-extinguishing.

MBX EZ Pack fill

Marley NC®

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Designed For Heavy Industr ia l Appl icat ions

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ADDITIONAL INFORMATION ABOUT

MARLEY CROSSFLOW HEAT TRANSFER FILL TYPES

Download these publications about Marley PVC Heat

Transfer Fill Media at spxcooling.com

OTHER SPX COOLING TECHNOLOGIES PRODUCTS

SPX Cooling Technologies offers a full line of industry-leading

crossflow cooling towers – with exceptional innovation and support

designed to help you get the most out of your cooling process. Take a

look at these Marley products at .spxcooling.com.