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"Many of our tenants say they've never felt this type of air comfort or atmosphere in an office building," said Scott Mazo, principal, University Partnership Associates, which devel- oped the property as Philadelphia's first multiple-certified Leadership in Energy and Environmental Design Platinum buildings and one of few nationwide. Several tenants have already achieved or are pursuing LEED Platinum certification under the "Com- mercial Interiors Rating System." Real estate investors have also taken notice. UPA sold the five-story prop- erty to Swiss-based Zurich Insurance Group in April 2016. "As a buyer, they recognized not just the energy-efficien- cy and technology features, but also the commitment to sustainability, which is important to them," said Mazo. The bulk of the HVAC system's LEED credits and air comfort were achieved with 500 active chilled beams and their induction principle operation. Air around ceiling-mounted chilled beam water coils continually cools and falls while warmer air rises in a continual convection of air comfort benefits with no drafts, no noise and stable temperature tolerances of ±1 F. Chilled beams also reduce fan energy by up to 50 percent, versus the large fan horsepower required in the conven- tional rooftop DX, ductwork and vari- able air volume system the design team considered. "The chilled beam system is a major contributor to the building's sustainability story and ongoing energy efficiency," said Michael W. Pavelsky, sustainability director, AIA, LEED AP, at The Sheward Partnership, which tracks and records the facility's energy performance. While some chilled beam brands use factory-set airflow nozzles that require replacement or complicated pressure balance calibrations for cfm rate changes, the IQHC model features a proprietary 12-slot nozzle that's field- adjustable with two easily accessed hand-operated levers for providing a unilateral, disproportional or equal air volume from each side. Outdoor air requirements and condensation prevention is achieved with one 20,000 cfm rooftop PVS-24 Pinnacle DOAS unit manufactured by SEMCO. The Pinnacle uses its own DX condenser so that the chiller is dedi- cated to just the chilled beams. Each active chilled beam's six-inch-diameter outdoor air takeoff is supplied with conditioned outdoor air to avoid con- densation from the chilled water loop's 48 F discharge. Ventilation air depends on the chilled beam's size and ranges from 25 to 85 cfm, which satisfies the building's outdoor air requirements and surpasses ASHRAE 62.1 standards for commercial buildings, according to Ulrick Joseph, P.E., principal, Mark Ulrick Engineers. Every drop of water saved today means a better tomorrow for you and your family! 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CIRCLE ID #22 ON READER SERVICE CARD OR GO TO HVACPPRODUCTS.COM/MARKET "Most chilled beam manufacturers don't make DOAS units," said Mazo. "A manufacturer making both the active chilled beams and the outdoor air unit to supply them dehumidified air was integral for synergy and purposes of single-source responsibility." 2.0 University Place's quick sale to ZIG helps facilitate UPA's next sustainable project in the University City District, 3.0 University Place. The over 189,000-square-foot, Class A structure will be completely eco-friendly, earning a Platinum certification rating from the U.S. Green Building Council's LEED program — the highest standard for environmentally sustainable construction. It was the first Platinum pre-certified global pilot 6 project for LEED v4. Again, Mazo plans to anchor the HVAC system with chilled beams and Pinnacle, with the addition of NEUTON, a smart, plug-and-play controlled chilled beam pump module, which promises to cut the chilled beam system's piping installation/material costs by 50 percent. The three-part system, better known as 3fficiency, provides superior indoor air quality and energy efficiency. The water- based 3fficiency system is safer and more environmentally friendly than a refrigerant-based system. While some real estate industry members perceive LEED buildings as exorbitant in cost, Mazo said the in- door air comfort, energy efficiency and commitment to saving the environment far outweighs the additional cost. "The ROI on the additional cost of making this building LEED Platinum is 100 percent in terms of the rental premium, energy efficiency, operating efficiency and the purchase premium." CHECK OR CIRCLE #165 The bulk of the HVAC system's LEED credits and air comfort at 2.0 University Place were achieved with 500 active chilled beams and their induction principle operation. chilled beams/ case study HVACPproducts.com Summer 2017 \ HVAC & Plumbing Product News 31