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SUBBARAO, K.; Burch, J.; Christensen, C. Macrodinâmica: an unified framework for building energy analysis. BUILDING SIMULATION, 1., 1985, Seattle.
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Dados do autor na base InfoHab:
Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
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Abstract

Dynamic building thermal models are needed in design and monitoring app lications for low-energy, innovative buildings, and can be classified as "microdynamic" or "macrodynamic". The basic concept of a microdynamic simulation (e.g., DOE2.1, BLAST3) Is that given a "microscopic" description of the building (material properties, detailed geometry, etc.), one can, by using known laws of nature, determine the building performance by simulating all energy fluxes in each element in the description. Advantages of this approach include potential generality and its ability to handle nonlinear models. However, the difficulty in obtaining the necessary inputs and the often uncertain nature of various approximations to basic laws makes use of the simulations In monitoring applications cumbersome or impossible. A different premise for simulations is macrodynamics: a building is an aggregated unit whose response to its driving functions can be characterized with only a few, aggregated parameters (macrodynamic parameters such as the well-known building load coefficient). A simulation that uses such parameters as inputs has been described previously (BEVA). For design, when only a detailed building description is available, the macrodynamic parameters can be calculated. On the other hand, performance data on an existing building implicitly contain information on these macrodynamic parameters. Performance monitoring in the form of short-term, whole-building tests provides a method to directly measure the building parameters. Thus, for an existing building, the building parameters can be obtained either by calculation or measurement, allowing data and theory to be balanced for the present application. Potential applications opened up with macrodynamics, as well as practical difficulties to be overcome in realizing this potential are discussed.
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