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the year, without running compressors or traditional chillers. the risk of flooding the lab if a hose leaks. CPM Although Caltech found this was an efficient way to reduce HVAC costs, it discovered that a large percentage of the Gerry Williams, PE, LEED-AP, is a vice president at Cannon Debuilding's electrical use now went to provide energy for "plug sign and leads its Products Design Group. He is also an adjunct proloads," or electricity for equipment that is plugged in and used fessor at the Missouri University of Science and Technology where after the building is constructed. Research equipment that he teaches graduate courses on Environmental Systems Design and produced large amounts of heat needed to be cooled, sometimes Control. He may be contacted at email@example.com. constantly, for the equipment to perform. The traditional method of providing this cooling was to purchase small, unitary air™ cooled chillers that produced cool water and rejected the heat to rooms they were Custom Prefabricated Duro-Guard EXCEPTIONAL Metals The Industry's Best Best PVC in. These mini-chillers often have poor Flashings Edge Details Warranties Membranes Insulation & Accessories energy efficiency as compared to central cooling systems and can take up a large amount of valuable lab space. Instead of using mini-chillers, Caltech found a better solution in extensive use of a water-to-water heat exchange cooling system. Ten heat exchanger units have been installed speciﬁcally designed to provide cooling for lab equipment with high plug loads using the evaporative cooled water system. An independent engineering ﬁrm's study revealed the lab would experience 87 percent reduction in energy use for equipment cooling using the combination of heat exchangers and evaporative cooled water as compared to traditional unitary process chillers. Working in collaboration with scientists at Caltech and the building design engineers at Rumsey Engineering, Cannon Duro-Last® is your single-source for complete roofDesign Products Group developed a ing systems, engineered to provide long-term edge water-to-water heat exchanging interface to edge and deck to sky™ protection. Installed by system that allowed the scientific equipment to be cooled indirectly by the highly an authorized contractor, then inspected and efficient and evaporative cooled central warranted by the industry's largest and cooling loop. By isolating the precision best-trained quality assurance team. equipment with a system of plate and frame heat exchangers, pumps, and PLC controls, the system supplies a constant supply of water at precisely 60°F (+/-0.1 degree), at the proper pressure, water quality, and flow CONTACT DURO-LAST ROOFING, INC. rate that research equipment requires for FOR THE "WORLD'S BEST ROOF"® peak performance. The system also uses the evaporative cooling loop as a heat sink to cool down the lab water, while always www.duro-last.com / Twitter: @durolast keeping the two water streams separate, "Duro-Last","EXCEPTIONAL", and the "World's Best Roof" are registered marks owned by Duro-Last Roofing, Inc. EXCEPTIONAL Metals is a division of Duro-Last Roofing, Inc. protecting the equipment's internal components from damage and eliminating Edge To Edge & Deck To Sky ™ ® 800-248-0280 APRIL 2013 / COLLEGE PLANNING & MANAGEMENT 57