The external cooling tower casing, which provides the enclosure and supporting all the various components, is made from the high strength, very durable and lightweight FRP materials.

FRP materials offer flexibility to fabricate aerodynamic profile such as the fan housing and tower body with high precision and yet offer very lightweight for ease of handling and ease of assembly. FRP construction is highly desirable also due to its superior resistance to weathering and corrosion since cooling towers are to be located outdoor and are directly subject to severe weathering and in constant contact with water.

The stainless steel fan chassis is used to provide the support of mechanical equipment and the entire tower body for rigidity and durability as well as to ensure long lasting life span.

The members are designed following major international codes and standards and the specific requirements concerning wind, earthquake and platform load. Filling support system is extremely durable and able to withstand loads up to 350 kg/m2. The cooling tower is supplied as a factory pre-assembled installation kit that is consists of 3 (three) sections:

water basin section

main section

fan and water distributing section

Sections should be installed one over another. This solution significantly reduces installation time and provides a fast start into operation.

Since the performance of the cooling tower is very much dependent on the effectiveness of the hot water distribution system, the complete internal piping system is provided within the cooling tower. A single inlet connection flange is provided for the cooling tower is located at the sidewall for direct connection with the overall cooling water system piping.

Hot circulation water return to the cooling tower via the main inlet header is redistributed through a series of smaller diameter lateral pipes and discharge onto the fill media below through the polypropylene downwards spray nozzles.

The spray nozzles are screwed-connected onto the lateral pipes with threaded connections and provided with sufficiently large openings to allow foreign solids to discharge through the nozzles without plugging.

Cellular drift eliminators provide the greatest effective surface area for maximum drift removal efficiency. Their cellular design allows great flexibility in trimming parts to the tightest fit and finish during installation, a key factor in overall drift emissions of a cooling tower.

High surface area provides maximum performance at minimum pressure drop.

Nests with adjacent modules to provide seamless drift removal by eliminating gaps between packs

Drift loss of 0.001% circulating water flow (Test Method CTI-HBIK Standard 140)

The OF21MA is for use in counterflow cooling towers (field-erected and package installations) in power, refining, chemical, steel, and food processing applications where water quality is average. OF21MA allows for high thermal performance, low-pressure drop, and reduces the potential for fouling in counterflow towers where the TSS is less than 100 ppm with good microbiological control. Features and benefits:

high thermal performance.

low-fouling potential.

bonded edge with dedicated bond points for added durability.

proprietary edge-cutting technology produces square packs that efficiently direct water to both sides of the sheet

surface area is 147,8 m2/m3

adhesive-free assembling technology

Trickle fill is used as a top layer for film fill safeguard in case of nozzles damage and enhanced film fill performance by providing better water distribution.

Fan unit consists of an impeller, electrical motor and support chassis. The fan blades with aerodynamically developed shape are designed in order to ensure quiet operation. Fan impellers of Multi-Wing brand have the following features and benefits:

high-efficiency design..

low power consumption

low noise from twisted blade design.

available for both clockwise and counter-clockwise rotation.

a special heavy-duty die-cast aluminum hub for high temperature and high-stress applications

PAG Glass reinforced polyamide

high UV resistance

Motors rotation speed can be adjusted by a variable frequency drive. Only motors of well-known brands with environment protection IP55 or higher are used.

Support chassis is made of stainless steel. Special steel grid provides fan impeller protection and safe fan unit inspection.

• Reduces noise leaving the tower through the louver modules by approximately three decibels.

• Achieves very low-pressure drop results.

Tower body - Hand lay-up FRP

Bots, nuts and washers - Stainless steel

Film fill support - Pultruded FRP

Fan assembly support - Stainless steel

Filling support - Pultruded FRP

Fan unit support - Stainless steel

Water distribution system - Main pipes – FRP, Secondary pipes – FRP

Nozzle - Polypropylene

Filling - PVC (film fill)

Drift eliminator - PVC (cellular)

Fan impeller Blades – Polyamide, Hub – Aluminum Alloy

Motor - Asynchronous 1000 rpm, direct drive

Louvers - PP packs

Louvers support - Stainless steel

Cold water basin - Hand lay-up FRP with water level control