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TrekHaus research team presents poster at Oregon BEST FEST '11!

posted Sep 12, 2011, 10:32 PM by Ella Wong   [ updated Sep 19, 2011, 8:45 AM ]

Just for science nerds who like poster sessions...
Abstract:   Integrating Phase Change Materials in Passive House Construction for Improved Thermal Comfort
K. Campbell, S. Rodriguez, S. Gross, C. Parroco , and D. Sailor, Portland State University, sailor@cecs.pdx.edu, 503-725-4265
This poster presents an overview of an ongoing project that seeks to understand the potential for improving thermal comfort in homes built to the passive house standard by incorporating phase change materials (PCM). A key characteristic of PCM for building applications is the ability to store heat in the form of latent heat associated with the melting of the PCM (usually a wax-like material) at room temperature. The PCM, which is generally encased either in micro or macro encapsulation packets, charges (solidifies) during the cooler evening hours, and discharges (melts) during the warm daytime hours. This process reduces the number of hours outside of thermal comfort for buildings without mechanical air conditioning and reduces energy use for buildings with air conditioning. The specific project discussed here revolves around an actual passive house duplex being constructed in SE Portland. We have used whole building simulation to optimize the phase change transition temperature, quantity of material, and placement location within the building. PCM is installed in one side of the duplex with the other side used as a control. The duplex will be extensively monitored to quantify thermal comfort, sub-metered energy use, and other parameters. Modeling and measurement results will be presented.

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