WIN 2017/18

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C ivil War-era physicians and nurses could only have dreamed of the contemporary healthcare facility — WellSpan Gettysburg Hospital in Pennsylvania— that now stands within sight of the Gettysburg National Military Park. Construction began about 60 years after the epic battle and today is a nationally recognized acute care community hospital. According to Joe Lehigh, a 27-year member of the hospital's engineering team, the most recent changes to the facility were made chief ly to improve facility operations. "The key need was to modernize mechanical systems that would ensure reliability of critical patient care," he said. "High on the list was cooling equipment. We needed unerring dependability of critical patient care." Cooling towers were at the top of the short list. According to Lehigh, the WellSpan engineering team worked in concert with consulting engineers Leach Wallace Associates and mechanical contractors James Craft & Son Inc. "Replacement of the towers was a five-year effort," explained Lehigh. The old cooling towers, with 900 tons of cooling capacity, were nearing their serviceable end. But finally, a new motivation emerged propelling an effort to replace the cooling towers — a longer-range expectation of the hospital's expansion. DESIGN SOLUTION One challenge became the key obstacle in a physical sense. The existing cooling towers were constrained on all sides by brick walls; this defined the footprint — immovably. The WellSpan Gettysburg Hospital engineering staff worked with multiple manufacturers, including Evapco, to review turnkey replacement solutions for the failing evaporative coolers. WellSpan engineering managers deployed their design experts and Leach Wallace. Together, they formulated a plan to replace the failing equipment in the same footprint and provide additional capacity for N+1 redundancy. The firmly defined space for the evaporative coolers, and the need for 1,200 tons of evaporative cooling equipment, negated all but one Gettysburg Hospital overhauls cooling system, now expansion-ready COOL SOLUTION FOR OLD HOSPITAL From left: Joe Lehigh, member of WellSpan Gettysburg Hospital's facility engineering team, and Kurt Juergensen, senior mechanical engineer from Leach Wallace Associates Consulting Engineers, discuss system operation. One of several Evapco cooling tower modules is lowered into position at Wellspan Gettysburg Hospital. case study /cooling towers HVACPproducts.com HVAC & Plumbing Product News \ Winter 2017/2018 30

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