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The Milwaukie Ledding Library (MLL) by Hacker Architects is a new construction 20,000SF project in Milwaukie, Oregon. The City of Milwaukie, the client, wanted to target high sustainability goals, pursuing the Energy Trust of Oregon's path to a net-zero program and LEED certification. The initial research proposal incorporated passive cooling to optimize hydronic radian slab cooling using air-to-water heat pumps designed for radiant heating. Dedicated to a cooling strategy taking advantage of as many passive elements as possible given time, design, and budget constraints, Hacker and PAE considered adding operational or actuated windows to aid with night flush as well as the cooling of the building within operational hours.
The objective of this research is to determine the effects of floor covering and natural ventilation on the radian slab cooling of the new Milwaukie Ledding Library as well as the sensitivity to user engagement with operable windows.
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