Marley / MD CoolingTower / Specifications: Base

Specifications

Specification Value

4.0Design Loading:

29

4.1

The tower and its components shall be

■ The indicated design values are the minimum allowables under

 

designed to withstand a wind load of

accepted design standards. They give you assurance that the cool-

 

1.44kPa. The cooling tower shall be de-

ing tower can be shipped, handled, hoisted—and ultimately oper-

 

signed to withstand shipping and hoist-

ated in a normal cooling tower environment. Most MD models will

 

ing loads of 2g horizontal or 3g vertical.

withstand significantly higher wind and seismic loads. If your geo-

 

Guardrails, where specified shall be

graphic location dictates higher wind load or seismic load values,

 

capable of withstanding a 890N con-

please make the appropriate changes, after discussion with your

 

centrated live load in any direction and

Marley sales representative.

 

shall be designed in accordance with

 

 

OSHA guidelines.

 

5.0Construction:

5.1

Except where otherwise specified,

■ In the history of cooling towers, no other coating for carbon steel

 

all components of the cooling tower

has exhibited the success and longevity of galvanization in expo-

 

shall be fabricated of heavy-gauge

sure to the normal cooling tower water quality defined at left. No

 

steel, protected against corrosion by

paints or electrostatically-applied coatings, however exotic they

 

EN10142:2000 grade Z600 galvaniz-

may be, can approach galvanization's history of success.

 

ing. After passivation of the galvanized

 

 

steel (8 weeks at pH 7-8, and calcium

If extended longevity of the cooling tower is required—or unusually

 

hardness and alkalinity at 100-300

harsh operating conditions are expected—consider specifying stain-

 

mg/L each), the cooling tower shall be

less steel as either the base construction material, or the material

 

capable of withstanding water having a

utilized for specific components of your choice. See Stainless Steel

 

pH of 6.5 to 9.0; a chloride content up

Options on page 16.

 

to 500 mg/L as NaCl (300 mg/L as Cl-);

 

 

a sulfate content (as SO4) up to 250

 

 

mg/L; a calcium content (as CaCO3)

 

 

up to 500 mg/L; silica (as SiO2) up to

 

 

150 mg/L; and design operating ranges

 

 

up to 10°C. The circulating water shall

 

 

contain no oil, grease, fatty acids, or

 

 

organic solvents.

 

5.2The specifications, as written, are intended to indicate those materials that will be capable of withstanding the above water quality in continuing service, as well as the loads described in paragraph 4.1. They are to be regard- ed as minimum requirements. Where component materials unique to indi- vidual tower designs are not specified, the manufacturers shall take the above water quality and load carrying capabili- ties into account in the selection of their materials of manufacture.

6.0Mechanical Equipment:

6.1

Fan(s) shall be propeller-type, incorpo-

■ Propeller-type fans require only half the operating hp of blower-type

 

rating heavy aluminum alloy blades and

fans. However, they should be readily adjustable to permit compen-

 

electrogalvanized hubs. Blades shall be

sation for jobsite conditions. The fans of one manufacturer require

 

individually adjustable and both stati-

the purchase of special positioners for each increment of fan blade

 

cally and dynamically balanced. Fan(s)

pitch. The Marley Power Belt drive system features all-aluminum

 

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SPX Cooling Technologies Marley MD specifications Design Loading, Construction, Mechanical Equipment
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Marley MD specifications

SPX Cooling Technologies has long been recognized as a leader in the cooling systems industry, and the Marley MD series exemplifies this commitment to innovation and efficiency. The Marley MD line is engineered for performance and versatility, ideal for a wide range of industrial and commercial cooling applications.

One of the defining features of the Marley MD is its advanced, modular design. This modular approach allows for easy scalability, enabling users to customize their cooling solution based on specific operational needs. Each unit can be configured to meet varying cooling loads, making the Marley MD suitable for both small and large facilities.

The Marley MD utilizes state-of-the-art materials, promoting durability and longevity. Constructed with corrosion-resistant components, these units are designed to withstand harsh environmental conditions, ensuring reliable operation over extended periods. The casing often features a combination of high-quality steel and advanced coatings that provide protection against the elements, which is especially important for outdoor installation.

Additionally, the Marley MD incorporates innovative technologies such as drift eliminators and splash bars, which significantly enhance water efficiency. These features minimize water loss and reduce the risk of contaminants entering the cooling system, leading to better overall performance. The design is also optimized for low sound levels, making these systems suitable for use in sensitive environments where noise reduction is a priority.

Energy efficiency is a critical characteristic of the Marley MD. It leverages advanced fan technology and airflow management to enhance cooling performance while minimizing energy consumption. By using high-efficiency motors and variable-speed drives, the Marley MD can operate at optimal levels under varying load conditions, resulting in significant energy savings over traditional cooling systems.

Another vital aspect is the ease of maintenance. The Marley MD is designed for straightforward access, allowing for efficient servicing and reducing downtime during maintenance activities. Features like removable panels and accessible components ensure that technicians can perform routine checks and repairs quickly and efficiently.

In conclusion, the Marley MD by SPX Cooling Technologies stands out due to its modular design, durable construction, advanced water management technologies, energy efficiency, and ease of maintenance. These characteristics make it an excellent choice for any facility looking to optimize its cooling operations while ensuring reliable and sustainable performance.
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