关键词：新能源与高效节能；房屋建筑；电力评价；能源效率
摘 要：Beginning in 2008, two pairs of energy-saver houses were built at Wolf Creek in Oak Ridge, TN. These houses were designed to maximize energy efficiency using new ultra-high-efficiency components emerging from ORNLs Cooperative Research and Development Agreement (CRADA) partners and others. The first two houses contain 3713 square feet of conditioned area and are designated as WC1 and WC2; the second pair consists of 2721 square feet conditioned area with crawlspace foundation and theyre called WC3 and WC4. This report documents the annual energy performance of WC3 and WC4, and how they compare against a builder standard house (BSH) of a similar footprint. WC3 and WC4 are both designed to be about 55-60more efficient than traditional new construction. Each house showcases a different envelope system: WC3 is built with advanced framing featuring cellulose insulation partially mixed with phase change materials (PCM); and WC4 has cladding composed of an exterior insulation and finish system (EIFS). The two houses are also equipped with ENERGY STAR rated appliances, or high-efficiency products for categories that are not yet ENERGY STAR certified. WC3 and WC4 are both on crawlspaces with the designs intended to provide a definitive comparison of a vented crawlspace to an insulated and sealed crawlspace in a mixed humid climate. The builder standard house is a computer model based on a builder house, one of three houses, built at the Campbell Creek subdivision in Knoxville, TN. The Campbell Creek research project supported the retrofit residential housing goals of the Tennessee Valley Authority (TVA) and the U.S. Department of Energy (Christian et al., 2010). The builder house is representative of a standard, IECC 2006 code-certified, all-electric house built around 20052008. This report presents data collected from WC3 and WC4 from December 1, 2010 to November 30, 2011. The outcome of this research program will contribute to efforts by Tennessee Valley Authority (TVA) to meet their strategic goals of deferring 1,400 MW of additional capacity and reducing growth in energy consumption by 4.3 million MWh per year by 2012, and in the longer term, to transform how homes are built and retrofitted.