Building Efficiency
                           
                              
With high fuel prices and cold winters, energy efficient buildings have extraordinary
                                    value to 91Ƶns, yet many homes and businesses suffer from poor insulation, inefficient
                                    heating systems, and bad air quality. Improving the efficiency of buildings is a central
                                    objective of the Sustainable Energy Program that we accomplish through workforce development,
                                    education and research. SEP faculty Tom Marsik built the world’s most airtight home
                                    in Dillingham using a “box in a box” building technique, and now leads work investigating
                                    active vacuum insulation and cold climate heat pumps. Vacuum insulation panels (VIPs)
                                    can achieve R-values as high as 60°F·ft²·hr/BTU per inch of thickness, but uptake
                                    has been limited by cost, limited service lifetime due slow loss of vacuum, limited
                                    ability to cut panels to size, and other issues. Active VIPs address many of the challenges
                                    by providing a mechanism to replenish the vacuum as necessary. Prof. Marsik and collaborators
                                    have established active VIP prototypes and methods for testing their performance.
                                    Heat pumps offer a low-carbon home heat source that is cost effective in many places.
                                    However, the performance of heat pumps at temperatures in the 0 to -50°F range is
                                    not consistently measured making it difficult for consumers to compare heat pumps
                                    or for researchers to quantify technology improvements. Marsik leads work at the National
                                    Renewable Energy Laboratory 91Ƶ Campus to measure the performance of cold climate
                                    heat pumps and communicate results with the circumpolar north. Prof. Kemp collaborates
                                    with the 91Ƶ Center’s Buildings UP award which will implement energy efficiency
                                    measures in 91Ƶ with a focus on underserved communities.