PCM-Enhanced Building Components: An Application of Phase Change Materials in Building Envelopes and Internal Structures. Jan Kosny. Springer. June 2015.
Chapter 5, Section 5.3.10 on TrekHaus PCM example. Pages 163-164.
Rodriguez-Anderson, Santiago Martin, "Sensible Air to Air Heat Recovery Strategies in a Passive House" (2015). PSU Dissertations and Theses. Paper 2123.
Sage-Lauck, J.S., Sailor, D.J., "Evaluation of phase change materials for improving thermal comfort in a super-insulated residential building". Energy and Buildings. Vol. 79. August 2014.
Sailor, D.J., J. Lauck, and S. Rodriguez, 2013. “In Situ Evaluation of vanguard technologies for high performance residential buildings", Paper No: HT2013-17528. Proceedings of the ASME 2013 Summer Heat Transfer Conference, July 14-19, 2013, Minneapolis.
Lauck, Jeffrey Stephen, "Evaluation of Phase Change Materials for Cooling in a Super-Insulated Passive House" (2013). PSU Dissertations and Theses. Paper 1444.
Sailor, D.J., 2012. "Proving Passive House Performance: 2 examples from Portland Oregon", Passive House Northwest 2012 Spring Conference, March 2, 2012, Portland.
Campbell, K.R., and Sailor, D.J., 2011. "Phase change materials as thermal storage for high performance homes", Paper no: IMECE2011-63273. Proceedings of the 2011 ASME International Mechanical Engineering Congress & Exposition, IMECE 2011, Nov. 11-17, Denver.
PSU graduate student Santiago Rodriguez presents poster on Evaluating Technologies for High Performance Residential Buildings at Oregon BEST FEST, September 11 & 12, 2013. Get a glimpse of the poster here...
Students pitch TrekHaus & wind turbines at 2013 International Capstone Design Contest on Renewable Energy Technology
Last month, graduate students from Portland State University’s Green Building Research Lab participated in the 2013 International Capstone Design Contest On Renewable Energy Technology (CORE 2013) in Mokpo, South Korea. Two of the PSU presentations raised considerable interest in the design of high performance Passive Homes. Jeff Lauck’s presentation on phase change material (PCM) being studied at TrekHaus won a gold award. Santiago Rodriguez’s presentation looked into energy performance characteristics of cutting-edge technologies being used at TrekHaus. Nicholas Hamilton earned silver for his work on wind turbine simulations. Get the full scoop in Portland State Vanguard article, Students pitch top ideas in Korea: TrekHaus and wind turbine simulations earn gold and silver.
Here's a peek at a couple of the poster presentations...
Dave Sailor, director of PSU's Green Building Research lab, talks about the testing being done at our TrekHaus duplex in this OPB News article- "PSU Lab Specializes in Testing Green Building Products". Also learn about the testing of Indow Windows, inserts which block cold winter drafts.
A special Green Living news segment on KATU- TV features TrekHaus collaboration with researchers and engineering students from the Green Building Research Lab at Portland State University. KATU meets the research team at the lab to learn about passive house construction and the phase change material that has been integrated into the "test" side of the TrekHaus duplex to improve energy efficiency and thermal comfort...and then goes on a field trip to visit the TrekHaus site.
The students get a great hands-on opportunity to study and monitor building performance, and to learn about highly energy efficient passive house design.
To view PSU link, click here.
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, firstname.lastname@example.org, 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.
Cool white roofs not only save cooling costs in the summer, but they help offset carbon dioxide emissions. White roofs and light colored pavements reflect sunlight directly back into space. Dark surfaces reflect less and radiate heat which gets trapped in the atmosphere by the greenhouse effect. Listen to what Energy Secretary Steven Chu has to say about the benefits of cool roofs and light-colored pavements.
According to Dr. Art Rosenfeld and colleagues at Lawrence Berkeley National Laboratory, the offset in carbon emissions from replacing the world's roofs and pavements with reflective white and light-colored surfaces is "roughly equivalent to taking the world's approximately billion cars off the road for 11 years."
Cool white roofs work best in hot sunny climates and may not be a good choice for colder climates. To determine whether your home or building might benefit from a cool roof, you can estimate potential cost and energy savings by using the DOE Cool Roof Calculator or this Roof Savings Calculator developed by Oak Ridge National Laboratory and Lawrence Berkeley National Laboratory.
The Department of Energy is funding a Fuels from Sunlight Energy Innovation Hub to help develop ways to mimic a leaf's photosynthetic ability to capture the sun's energy and convert it to chemical fuel. The trick is to do this sustainably using safe earth-abundant materials. More than 400 high school and college student volunteers (see map below) are helping researchers screen for earth-abundant metal-oxides that help turn sunlight and water into hydrogen fuel and oxygen. Platinum catalysts which can be used to split water with sunlight are expensive and getting hard to come by. To do this sustainably, the students and researchers are looking for inexpensive earth-abundant components like cobalt, nickel, and iron to catalyze the conversion. This article, "The Sunshine General", from the Spring/Summer 2011 edition of Caltech's E & S publication describes how students can help in the discovery process using a screening kit called SHArK (Solar Hydrogen Activity Research Kit). Students interested in participating can check out the Caltech Solar Materials Discovery Project and view the materials database being generated by students involved in this distributed research effort.
In Portland, three schools have been SHArK participants- Portland State University, Reed College, and Lewis & Clark College. Let's go SHArKs!
If you want to get off of fossil fuel, what are you going to use to power your new slim energy-fit lifestyle? This graph shows world power generation potential (based on what we can practically get with current technology) from solar and other renewables.
Take advantage of any renewable sources that are suited to your specific location...but globally, let's go solar!