CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id 1767
authors Loveday, D.L., Virk, G.S., Cheung, J.Y.M. and Azzi, D.
year 1997
title Intelligence in buildings: the potential of advanced modelling
source Automation in Construction 6 (5-6) (1997) pp. 447-461
summary Intelligence in buildings usually implies facilities management via building automation systems (BAS). However, present-day commercial BAS adopt a rudimentary approach to data handling, control and fault detection, and there is much scope for improvement. This paper describes a model-based technique for raising the level of sophistication at which BAS currently operate. Using stochastic multivariable identification, models are derived which describe the behaviour of air temperature and relative humidity in a full-scale office zone equipped with a dedicated heating, ventilating and air-conditioning (HVAC) plant. The models are of good quality, giving prediction accuracies of ± 0.25°C in 19.2°C and of ± 0.6% rh in 53% rh when forecasting up to 15 minutes ahead. For forecasts up to 3 days ahead, accuracies are ± 0.65°C and ± 1.25% rh, respectively. The utility of the models for facilities management is investigated. The "temperature model" was employed within a predictive on/off control strategy for the office zone, and was shown to substantially improve temperature regulation and to reduce energy consumption in comparison with conventional on/off control. Comparison of prediction accuracies for two different situations, that is, the office with and without furniture plus carpet, showed that some level of furnishing is essential during the commissioning phase if model-based control of relative humidity is contemplated. The prospects are assessed for wide-scale replication of the model-based technique, and it is shown that deterministic simulation has potential to be used as a means of initialising a model structure and hence of selecting the sensors for a BAS for any building at the design stage. It is concluded that advanced model-based methods offer significant promise for improving BAS performance, and that proving trials in full-scale everyday situations are now needed prior to commercial development and installation.
series journal paper
last changed 2003/05/15 19:22

_id sigradi2011_378
id sigradi2011_378
authors Moretti Meirelles, Célia Regina; Dinis, Henrique; Collet e Silva, Tiago Azzi; Dias, Alan
year 2011
title A aplicação da modelagem em elementos finitos na concepção das estruturas em madeira e sua aplicação em projetos de habitação em madeira [The application of finite element modeling in the design of timber structures and their application in housing projects]
source SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 520-523
summary The search for sustainable buildings is one of the most important phenomena of this century. Wood is a renewable material light, presents a grand synthesis of carbon recovery, its construction process is considered dry construction, it is composed of prefabricated parts for easy assembly.The research examines the application and digital models as tools in the design of timber structures and demonstrate the potential of digital modeling processes in particular the application of the tools in the structure, serving as support for the project in several phases, it allows the model analysis as a whole, showing stresses and strains.
keywords Housing; timber; finite element
series SIGRADI
last changed 2016/03/10 08:55

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