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Marley Class 600 Cooling Tower
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Class 600 cooling towers are available in various cell / Flexibility of Design / sizes, fill air travels, and fill heights. Within each of these Class 600 cooling towers are a direct descendent cell plans, several aspects of the basic design can be ® of the Doubleflow crossflow tower that was designed varied in order to achieve optimum operating economy. and patented by Marley in 1938. In 1957, Marley’s The choices include variations in fill type and density, development of hanging f
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/ Mechanical Equipment / Fans Fan Cylinders Marley designed and manufactured fans are used on Venturi-shaped FRP cylinders combine minimal all Marley crossflow towers. The fan selection and fan entrance losses with close blade tip clearances to speed for a given tower are based on tower cell size, produce optimum fan performance. As cylinder heights system losses, and horsepower requirements. Depending increase, cylinders are progressively flared to promote on fan size, blade material is
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Driveshafts Marley-manufactured driveshafts transmit power from the motor to the Geareducer. All Marley driveshafts are manufactured from either carbon fiber composite or stainless steel tubes with stainless steel flanges. Bonded neoprene flexible elements transmit torque and require no lubrication. Marley driveshafts are full-floating assemblies with flexible couplings on each end. Their tolerance to misalignment and torsional shock is unequalled in non- specialized units. All Marley dr
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/ Fill / Class 600 splash fill bars are available in the following materials: • PVC in “Omega”, “Mega” or “Alpha” configurations. • Injection-molded polypr opylene “Ladder” configurations. • Rough sawn, pr eservative-tr eated wood Each cooling tower application is individually reviewed “G” configurations. to assure selection of the proper fill type and fill spacing. Performance is computer optimized to assure maximum cooling from a given tower cell size for the design perfor
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/ Water Distribution System / Piping Although side inlet piping is provided as standard, Class 600 towers are adaptable to end inlet piping. This is an economical method requiring only one riser for each series of hot water basins, regardless of the number of fan cells. Cast iron, steel, and reinforced plastic pipe are all available. Valves Marley-built flow control valves used on Class 600 towers have proved their reliability in more than 40 years of service. The oversized valve body
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/ Tower Structure / Class 600 cooling towers are designed in accordance with the latest edition of the National Design Specification for Wood Construction (NDS) published by the National Forest Products Association, and CTI STD-114. Wind load criterion is per ASCE-7, and stability is based upon an applied lateral load of 2.5% of the total operating weight. Allowable stress values for all lumber are reduced for wet service, temperature, and duration as appropriate. Unless otherwise spe
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The diagonals brace the structure and carry loads to heavy-duty, hot dip glavanized anchor castings. The anchor castings transmit wind and/or earthquake loads from the structure directly into the foundation. For standard wind load conditions, anchor bolts are required only at the perimeter. Structural ceramic rings or glass reinforced nylon shear plates are used in conventional connector ring joints where greater strength is required than bolted joints provide. Permissible joint loads are
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/ Casing / The endwalls of Class 600 towers are cased from the fan deck level to below the top of the basin curb with 8 oz/sq ft corrugated FRP sheets. FRP is waterproof and corrosion proof, is immune to biological deterioration, and requires no maintenance. Sheets are installed on maximum 4′-0″ spans with corrugations running horizontally. Vertical joints are lapped and sealed. Horizontal joints are lapped one corrugation to shed water inward. The casing is attached to structural me
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/ Maintenance Options / Endwall Derrick The endwall derrick is a permanently installed tripod device of galvanized structural steel. In service, removable structural aluminum tracks are positioned across the platform opening. Equipment to be handled is placed on a 4-wheel dolly—part of the equipment handling package—rolled onto the track and elevated slightly. The track and dolly are removed and the equipment lowered to grade level. With single sheave rigging, the derrick will handle
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/ Additional Services / SPX Cooling Technologies is dedicated to satisfying the needs of our customers—needs which begin far in advance of the actual purchase of a new Marley cooling tower, and vary over the operating lifetime of the project. Here is a partial listing of the additional services offered by SPX Cooling Technologies to help you do your job most effectively: Application/Sizing/Layout Services—Sales Engineers are Reconstruction Service—Due to operating or atmospheric trained to
