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Home Energy Saver is a set of on–line resources developed by the U.S. Department of Energy at the Lawrence Berkeley National Laboratory intended to help consumers and professional energy analysts, analyze, reduce, and manage home energy use. The Home Energy Saver energy assessment tool allows consumers to conduct a do-it-yourself home energy audit and provides specific recommendations to help lower household energy consumption and utility costs. By entering a zip code, users get estimates for typical and efficient homes in their area. The estimates break down energy consumption by “end use". End uses reported by Home Energy Saver include: heating, cooling, water heating, major appliances, small appliances, and lighting. The more details a user enters, (e.g., insulation levels, roofing, age of major equipment, how systems are used) the more customized the assessment results and energy efficiency recommendations become. The tailored reports allows consumers to drill into estimated cost of improvements, anticipated payback time, projected utility bill savings, and how much energy use and green house gas production will be reduced. Consumers can vary the energy efficiency assumptions and the upgrade costs, (e.g., replacing the default values with actual estimates from contractors) and recalculate the payback times and other details. The Home Energy Saver website includes a section called LEARN which offers tips about energy savings, an explanation of the house-as-system energy efficiency approach, and other information to help people understand how energy is used in a home. When launched in 1994, Home Energy Saver was the first and only online home energy calculator. Thereafter, 6 million people have used it to analyze their home energy use. Nearly 1 million people visit the site each year. In 2009, a second version of the tool, Home Energy Saver Professional, was launched. This advanced version provides a low cost, interactive energy simulation/assessments tool for contractors, building professionals, weatherization professionals, and building designers. == The Home Energy Simulation Model == The Home Energy Saver is built on DOE-2, a computer program for building heating and cooling energy analysis and design.〔(【引用サイトリンク】url=http://www.rdmag.com/Awards/Rd-100-Awards/2010/08/Calculating-Energy-Savings/ )〕 DOE-2 performs a thermal load simulation that accounts for heating and cooling equipment and thermal distribution efficiencies, infiltration, and thermostat management.〔Raad. Z. Homod, K. S. M. Sahari, H. A.F. Almurib, F. H. Nagi, Double cooling coil model for non-linear HVAC system using RLF method, Energy and Buildings, Volume 43 (2011) 2043–2054〕 User-entered zip codes are mapped to one of about 300 unique “weather tapes” that impose a year’s worth of local weather conditions on the home to determine heating and cooling needs. Home Energy Saver extends DOE-2 in a number of ways to improve the simulation model.〔Raad Z. Homod, K.S.M. Sahari, H.A.F. Mohamed, F. Nagi, Modeling of heat and moisture transfer in building using RLF method, conference on research and development, IEEE, (2010) 287 – 292〕 For example, when users enter their actual electricity tariffs, the predictive power of the model improves. Other methods are used to calculate the energy used by appliances, water heating, and lighting. The public–domain HES calculation methods and underlying data are clearly documented on the website. Other web-based tool developers are welcome to use this information at no cost, providing that the source is properly credited. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Home Energy Saver」の詳細全文を読む スポンサード リンク
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