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SIMEA Stato dell’arte energetica degli edifici 1.2.31. HOT2000 Easy-to-use energy analysis and design software for low-rise residential buildings. Utilizing current heat loss/gain and system performance models, the program aids in the simulation and design of buildings for thermal effectiveness, passive solar heating and the operation and performance of heating and cooling systems. 1.2.31.1. Expertise Required 60 Doc.No 20100610.SIMEA.MR.03 Versione 1 Basic understanding of the construction and operation of residential buildings. 1.2.31.2. Users Over 1400 worldwide. HOT2000 is used mainly in Canada and the United States with a few users in Japan and Europe. 1.2.31.3. Audience Builders, design evaluators, engineers, architects, building and energy code writers, Policy writers. HOT2000 is also used as the compliance software for the Canadian R-2000 Program. 1.2.31.4. Input Building geometry, construction characteristics (above and below grade), HVAC and domestic hot water specifications, geographical location of the house, fuel costs and economic data (optional). The data is entered through a graphical user interface. Many defaults are provided, if the user is not sure of certain values 1.2.31.5. Output Reports on the house analysis, weather file, economic and financial conditions and fuel costs are available. The house analysis includes detailed monthly tables, annual heat loss and HVAC load results. A comparison report allows for the display of results of up to 4 house files at once. 1.2.31.6. Computer Platform PC compatible, 486 or higher, Windows 95/NT, SVGA monitor with minimum 800 x 600 resolution. 1.2.31.7. Programming Language Calculation engine: FORTRAN, interface: Visual C++ 1.2.31.8. Strengths Performs whole-house energy analysis quickly (
SIMEA Stato dell’arte energetica degli edifici 1.2.32. IDA Indoor Climate and Energy 61 Doc.No 20100610.SIMEA.MR.03 Versione 1 A tool for simulation of thermal comfort, indoor air quality and energy consumption in buildings. IDA Indoor Climate and Energy (IDA ICE) is based on a general simulation platform for modular systems, IDA Simulation Environment (Sahlin and Grozman 2003). Physical systems from several domains are in IDA described using symbolic equations, stated in either or both of the simulation languages Neutral Model Format (NMF) (www.equa.se) or Modelica (www.modelica.org). User defined tolerances control solution accuracy, allowing complete isolation of numerical errors from modelling approximations. Efficient DAE solvers are used to achieve a close to linear relationship between problem size and execution time for most problem types. The building simulation enduser benefits from this approach in several ways: • model extensions may be added as needed, by purchase or own development, • the mathematical model is fully transparent to the user, i.e. all variables, equations and parameters can be inspected to investigate model behaviour, • models from research work are easily made useful in commercial design, • the cost of maintaining and improving the general platform is shared among several domains, enabling commercially driven building simulation development. Locally adapted offerings of commercial quality, manufacturer-neutral, software and services can then become a reality. The IDA building simulation application Indoor Climate and Energy was specified and partly financed by an industrial consortium and has since its release in 1998 grown to become a leading international tool. Special strengths are associated with a northern European engineering culture, represented by for example displacement ventilation, active chilled beams, radiative devices, air and water based slab systems. All Termodeck buildings are for example designed using IDA ICE. A special strength is realistic modelling of controls, enabling study of local loop behaviour in a whole- building context. IDA ICE offers separated but integrated user interfaces to different user categories: Wizard interfaces - leading the user through the steps of building a model for a specific type of study. The Internet browser based IDA Room wizard for cooling and heating load calculations is available free of charge over the Internet, serving some 5000 registered users in six (soon eight) languages. Standard level interface - where the user is expected to formulate a reasonable simulation model using domain specific concepts and objects, such as zones, radiators and windows. 1.2.32.1. Expertise Required IDA ICE is designed for HVAC designers, not being experts on simulation methods. Has an advanced level appreciated by simulation experts as well. 1.2.32.2. Users 250, primarily in Europe 1.2.32.3. Audience HVAC designers, researchers 1.2.32.4. Input Thermal characteristics, internal loads and schedules, heating and cooling equipment and system characteristics, building geometry. User enters data through an interface based on Windows 95/98/NT.
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