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SIMEA Stato dell’arte energetica degli edifici 1.2.23. Energy-10 46 Doc.No 20100610.SIMEA.MR.03 Versione 1 Energy-10 is a user-friendly early design stage building energy simulation program that integrates daylighting, passive solar heating, and low-energy cooling strategies with energy-efficient shell design and mechanical equipment. The program is geared toward small commercial and residential buildings of 10,000 ft 2 or less-that's where the "10" in Energy-10 comes from. Developed by the U.S. Department of Energy since 1992, Energy-10 runs an hourly thermal network simulation while allowing users to rapidly explore a wide range of energy efficiency strategies and plot the results in a number of ways. Energy-10 takes a baseline simulation and automatically applies a number of predefined strategies ranging from building envelope (insulation, glazing, shading, thermal mass, etc.) and system efficiency options (HVAC, lighting, daylighting, solar service hot water and integrated photovoltaic electricity generation). Full life-cycle costing is an integral part of the software. Starting from building location, footprint, usage type and HVAC type Energy-10 can generate reference and low-energy target cases in seconds based on full annual hourly simulation. Ranking graphs for individual strategies can guide early design analysis. Built-in graphs including an embedded version of "DVIEW" allow flexible review of summary and hourly results. Energy-10 can be used to evaluate and select strategies for much larger buildings. Insulation levels, daylighting, glazing, shading, and passive solar strategies can be calculated under the assumption that a large building is kept at a reasonably uniform temperature. However, overall energy use may be underestimated because HVAC interactions between multiple zones may not be accurately represented. Energy-10 allows rapid exploration of broad design issues effecting energy performance early in design based on a BESTEST (ASHRAE Standard 140- 2001) validated thermal simulation engine. 1.2.23.1. Expertise Required Moderate level of computer literacy required; two days of training advised. 1.2.23.2. Users More than 3,200 users worldwide. 1.2.23.3. Audience Building designers, especially architects; also HVAC engineers, utility companies, university schools of architecture and architectural engineering. 1.2.23.4. Input Only 4 inputs required to generate two initial generic building descriptions. Virtually everything is defaulted but modifiable. User adjusts descriptions as the design evolves, using fill-in menus, including utility-rate schedules, construction details, materials. 1.2.23.5. Output Summary table and 20 graphical outputs available, generally comparing current design with base case. Detailed tabular results also available.
SIMEA Stato dell’arte energetica degli edifici 1.2.23.6. Computer Platform 47 Doc.No 20100610.SIMEA.MR.03 Versione 1 PC-compatible, Windows 3.1/95/98/2000, Pentium processor with 32 megabytes of RAM is recommended. 1.2.23.7. Programming Language Visual C++ 1.2.23.8. Strengths Fast, easy-to-use, accurate. Automatic generation of base cases and energy-efficient alternate building descriptions; automatic application of energy-efficient features and rank-ordering of results; integration of daylighting thermal effects with thermal simulation; menu display and modification of all buildingdescription and other data. 1.2.23.9. Weaknesses Limited to smaller buildings and HVAC systems that are most often used in smaller buildings.
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