Evapco Inc.

- Model ES/ESP Series - Cooling Tower

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The FM Approved Series ES and ESP evolved from the proven EvapTech Series EC product line. These products share high quality fire-retardant fiberglass pultrusions with proven structural integrity and a design methodology confirmed by FM Approvals Standard Class 4930 for resistance to the most extreme natural hazards. EvapTech is a participating manufacturer to CTI Standard STD-202. The EC, ES and ESP product lines share the same functional heat transfer and drift eliminator component designs, although the ESP component materials are customized. The use of these heat transfer and eliminator designs assures owners reliable thermal performance and low drift rates.

Series ES

  • Intended for multi-cell FM Approved applications, typically when four or more cells are required
  • Comparable fire protection to towers previously approved by older FM protocols requiring only containment of a fire
  • Employs FireStop structural concrete panel technology to contain a fire within the cell of origin by preventing the fire from spreading over, under, around or through the cell walls and partitions to adjacent cells
  • Incorporates the hardened SafeWall custom fiberglass casing technology

Series ESP

  • Unique premium product Line intended for both single and multi-cell FM Approved applications
  • Eliminates the FM requirement for any redundant thermal capacity
  • Provides a greater degree of protection from fire and natural hazards to reduce the recovery time and cost when compared with other approved products
  • Franklin Fill and Franklin Eliminators are made of custom formulated PVC with a limited combustibility rating
  • The self-extinguishing characteristics of these materials create a charring effect to choke off airflow and inhibit the spread of fire – If a fire cannot spread; it is by definition contained
  • ESP incorporates the hardened SafeWall custom fiberglass casing technology to resist natural hazards

Key Advantages of Series ES & ESP

  • Reliability of Operations – Minimal loss of performance and interruption to operations
  • Hardened to Survive - SafeWall technology resists damage and compromised thermal performance resulting from airborne debris and wind pressures created by severe storms and hurricanes. The durability that results will improve operation, maintenance, and reduce repair costs for the life of the product.
  • Cost Effective – The Series ES & ESP products are cost comparable to towers with fire protection systems
  • Customizable Fill Components – A variety of high performance low-fouling fills with different sheet thicknesses for standard and extended service life
  • Low Drift Rates – The best available control technology (BACT) for drift rates as low as 0.0005% is standard
  • Air Inlet Treatments – The Series ES & ESP products can be customized for any application with a variety of air inlet treatments including no louvers, wide-spaced louvers, or cellular PVC louvers
  • Product Quality is a Given – Quality audits of all combustible components by FM Approvals assures the same FM Approved product is provided for every project
  • Avoid Thermal Redundancy – Extra or over-sized cells are not required

Equally as important as the mechanical component selection, equipment support design utilizing a properly sized round torque tube to effectively restrain rotational dynamic loads is essential to assuring the longevity of these costly and critical tower components. The devil is in the details and the design details of support bracing and its attachment to the tower structure will determine if the support effectively restrains rotational and vibration loads.

The EvapTech Edge:

Support Sizing: EvapTech properly sizes the torque tube for the fan diameter and applied horsepower - Flexing of undersized supports is a common cause of reduced gear, motor, and driveshaft operating life.

Support Design: Equipment mounting plates braced against movement in all directions - simple bent plates welded to the tube do not provide the rigidity required by the driveshaft and will ultimately lead to failure of the shaft and gear/motor bearings.

Positive Positioning: Jack bolts are provided for ease of alignment and assure properly secured motor and gear placement - do not rely upon a simple spiral pin to maintain alignment during numerous start/stop cycles.

Structural Attachment: Torque tube loading must be applied directly to the tower's vertical column framing with steel plates bolted directly from the support to vertical framing members - never allow horizontal framing members, plastic grommets, or hollow leg fan deck panels sandwiched between the support and tower framing to be used to transmit loads.

Vibration Bracing: Diagonal bracing immediately below the supports transmits and spreads loads into the surrounding structure - Both pultruded fiberglass and timber are unidirectional strength materials, anticipating that vibration loading will be adequately restrained by moment loading of these members will result in a substantially reduced life cycle of mechanical components.

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