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Fabricante : SPX Cooling Technologies
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All Marley components are designed and selected to be part of an integrated system. For example, the spray pattern from nozzles and the pressure drop through drift eliminators both affect a fill’s heat transfer capacity. So, we include that impact in our thermal analysis. Drift eliminators must be effective at the air velocities where fill is most efficient. So, we’ve carefully designed both components to work together efficiently. How many other cooling tower companies can offer you this assurance? They may use Brand “A” nozzles with Brand “B” fill and Brand “C” drift eliminators. When they all come together, the whole may be less than the sum of the parts. Our total system approach assures that all the parts work together to provide you the greatest total performance. And because we design specifically for cooling towers, all our components will provide many years of service with minimal maintenance. Series 1200 Cross-Section 2 / Sigma Advantage / Series 1000 Cross-Section • Guaranteed Performance. Don’t rely on outside agencies with limited enforcement powers. We’ll stand by our responsibility for reliable thermal performance. • Low Operating Costs. Marley’s high-efficiency fill and fans, gravity-flow water distribution, and efficient Geareducer® drive work together to offer maximum We designed it. We rate it. We guarantee it! cooling with minimum power use. • Exclusive 5-Year Mechanical Warranty. Your no- cost assurance of trouble-free mechanical operation for 5 years. Isn’t that where a lot of your tower • Low Maintenance Costs. Induced-draft propeller fans on Marley right-angle Geareducer units; TEFC, 1.15 service factor motors; and heavy-duty mechanical • maintenance dollars have gone in the past? Long Service Life. We’ve carefully chosen all the materials used in Sigma towers for their corrosion resistance and suitability for cooling tower service. • equipment supports assure long service life with minimal maintenance. All-Season Reliability. Sigma towers perform as specified in the heat of summer. They respond well to Pressure-treated lumber, heavy-galvanized steel, stainless steel, PVC and fiberglass keep your Sigma energy management techniques in the spring and fall. They operate virtually ice-free in the dead of winter. • tower working year after year. Efficient Field Assembly. Precise factory fabrication assures that every component in your Sigma tower will fit as designed. And SPX Cooling Technologies offers • And they offer simple maintenance all year long. We guarantee it! Single Source Parts Availability. SPX designs, manufactures, guarantees, and stocks all major an unparalleled nationwide construction organization to build your tower quickly and economically. components of the Sigma cooling tower except motors. We’ll have the parts if you ever need them. 3 / Construction and Components / Fill/Louvers/Drift Eliminators Marley high-performance film fill is the heart of every Sigma tower. A repeating chevron pattern provides the wetted surface and air turbulence necessary for proper heat transfer, while minimizing resistance to airflow so you’ll save on fan power. Molded protrusions on each fill sheet assure uniform spacing. Fill sheets include both louvers and drift eliminators. The louvers in this patented arrangement keep water on the fill sheets and in your tower, and also assure proper heat transfer throughout wide variations in airflow. Users find this fill operates ice-free even in extremely cold weather. Fill sheets are vacuum formed 15 mil (.015") thick polyvinyl-chloride (PVC) capable of service at hot water temperatures up to 125°F. Stainless steel structural tubes resting in stainless steel hangers support the fill, and PVC tubes control alignment. Series 1000 fill includes two stainless supports, and Series 1200 fill uses four stainless supports. This system also holds the bottom of the fill sheets above the cold water basin floor to simplify basin cleaning. Integral drift eliminators prevent the costly nuisance of drift spotting on objects in the surrounding environment. Their unique shape induces the air flow through three distinct direction changes as illustrated above. The final turn directs air toward the fan to save you fan horsepower. Moisture carried in the air stream can’t make these abrupt turns, so drift is 0.010% or less of the circulating water flow rate. 4 / Construction and Components / Mechanical Equipment You’ll receive a 5-year warranty against failure of any mechanical component in the fan drive system (except the motor, which is warranted by its manufacturer). The Marley Geareducer speed reducers used in the Sigma line contribute a long record of dependability, long service life, and low maintenance to this assurance of reliability. Their designs meet or exceed the requirements of CTI STD-111 and AGMA Std. 420.04. We run-in every Geareducer unit under load prior to shipment to make sure that it will operate properly on your tower. Housings are gray cast iron....
Este manual também é adequado para os modelos :Fans - Marley Sigma Wood CoolingTower 1000 (1.13 mb)