April - 2021CONSTRUCTIONTECHREVIEW.COM8New Modular Cooling Tower Technology Reduces Construction Costs and Improves Worker SafetyNew modular cooling tower configurations are worthy of serious consideration for construction teams, mechanical contractors and engineers working on commercial HVAC and industrial pro-cess cooling applications. These large, efficient cooling towers can nearly triple cooling capacity compared to typical single-cell, factory-assembled cool-ing towers, while using substantially less fan power to drive energy savings. Both crossflow and counterflow tower designs achieve a low measurable drift rate ­ down to 0.0005 percent of circulating water flow, and minimize piping and electrical connections. The entire installation process is shortened dra-matically because delivery lead times are 60 percent shorter and field assembly is completed 80 percent faster compared with field-erected towers. An example of new modularization technology is the Marley® NC Everest® Cooling Tower. It provides up to 50 percent more cooling capacity per cell and uses up to 35 percent less fan power per ton of cooling compared with other factory-assembled crossflow single-cell towers. The crossflow configuration offers several advantages, including easier access to the tower interior and mechanical components. It also permits "variable flow" operation, which reduces water flow rates and energy consumption during cooler weather. Its increased cooling capacity means fewer cells are required. Simpler installation reduces both construction and maintenance costs for HVAC and industrial applications alike. Another advanced modular design is the counterflow Marley MD Everest® Cooling Tower. With a flow rate up to 12,602 gallons per minute (GPM) per cell (2862 m3/hour), it offers nearly three times more cooling capacity per cell than typical preassembled counterflow towers. At 3790 nominal By Rob Gorman, General Manager, SPX Cooling TechnologiesIN MY OPINION
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