Publications of Philippe Andre
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See detailThermal comfort analysis in a passive solar building.
Andre, Philippe ULiege; Nicolas, Jacques ULiege; Colson, B.

in Proceedings congres Building design, technology and occupant well-being in temperate climates (1993, February)

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See detailThermal conductivity measurements in soil using an instrument based on the cylindrical probe method
Nicolas, Jacques ULiege; Andre, Philippe ULiege; Rivez, Jean-François et al

in Review of Scientific Instruments (1993), 64(3), 774-780

The article discusses the underlying hypothesis, the limits, the range of application, and the practical operation of a versatile thermal conductivity analyzer based on a transient cylindrical probe ... [more ▼]

The article discusses the underlying hypothesis, the limits, the range of application, and the practical operation of a versatile thermal conductivity analyzer based on a transient cylindrical probe method. The best expected precision for the conductivity determination appears to be ~±10%. A compact analyzer, integrating all the apparatus' components in the same unit, has been specifically designed for environmental research in the field. Calibration received special attention regarding thermal conductivity values in the range 0.1–3 W/mK. The analyzer was tested on seven materials, in field conditions, and discrepancies from published conductivity values did not exceed 9%. Several checks were performed in the laboratory to study the influence of experimental conditions, such as the probe insertion technique. The cylindrical probe method appears well suited to powdered materials, but may also be applied to viscous liquids and solid matter. As an application, the cylindrical probe was used to characterize nine soils from the Belgian Lorraine. After soil analysis in the dry state, thermal conductivity of each sample was determined at different moisture contents. The transient cylindrical probe method proved to be quick and easy, whether in situ or on samples in the laboratory. It is a powerful tool which can map a country's soil thermal properties. [less ▲]

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See detailApplication de la théorie des systèmes à la thermique des bâtiments. Problèmes de modélisation, d'identification et de contrôle
Andre, Philippe ULiege; Nicolas, Jacques ULiege

in Revue Generale de Thermique (1992), 31(371), 600-615

La théorie est utilisée pour développer des modèles simplifiés, pour estimer, par des méthodes d'identification de systèmes, les variables d'état et les paramètres de ces modèles et enfin pour élaborer ... [more ▼]

La théorie est utilisée pour développer des modèles simplifiés, pour estimer, par des méthodes d'identification de systèmes, les variables d'état et les paramètres de ces modèles et enfin pour élaborer des stratégies de commande optimale pour le chauffage d'un bâtiment. L'ensemble de ces techniques est appliqué à un bâtiment solaire passif situé en Belgique. [less ▲]

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See detailExpert system : a versatile tool for the real time control of a solar building
Nicolas, Jacques ULiege; Andre, Philippe ULiege

in Journal A. Benelux Quarterly Journal on Automatic Control (1992), 33(3), 99-105

The expert-system approach is well suited to manage complexes heating systems, with various energy sources and different possible strategies of heating or cooling. A specific computer tool is applied on ... [more ▼]

The expert-system approach is well suited to manage complexes heating systems, with various energy sources and different possible strategies of heating or cooling. A specific computer tool is applied on the solar-assisted heat pump system of Fondation Universitaire Luxembourgeoise in Arlon. It is developed around a list of rules of the type : "if…then.." and the code is written in Prolog language. The main difficulty of implementing such tool is the managing of time, because every sensor or actuator reacts in real time and a decision has first to be tested and validated before issuing on-line action on the system. The main advantage of the approach is that expert-system can very easily encapsulate the experimental knowledge of the heating system manager, simply by adding some rules in the rule base. [less ▲]

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See detailEnvironmental monitoring at FUL
De Backer, Louis W.; Andre, Philippe ULiege; Nicolas, Jacques ULiege

in Journal A. Benelux Quarterly Journal on Automatic Control (1992), 33

The paper presents the research and teaching activities of Fondation Universitaire Luxembourgeoise (Arlon) and more particularly in the domain of Environmental Monitoring. Particular attention is given to ... [more ▼]

The paper presents the research and teaching activities of Fondation Universitaire Luxembourgeoise (Arlon) and more particularly in the domain of Environmental Monitoring. Particular attention is given to "intelligent measurement, bio-sensors and event forecast algorithms. The team of researchers tries to integrate the three steps of monitoring: measurement, data processing and decision making support. It develops short-term fog forecasting tools, water quality sensors, soil water status quality assessment techniques and uses models describing soil and water transfers in soils and artificial intelligence techniques applied to energy management in buildings. [less ▲]

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See detailLe bâtiment solaire passif de la Fondation Universitaire Luxembourgeoise à Arlon
Andre, Philippe ULiege; Nicolas, Jacques ULiege; Boreux, Jean-Jacques ULiege et al

in Chaleur et climats (1992), (635), 2-8

Description des différentes technologies solaires passives: systèmes à gain direct, murs de masse et serres, mises en oeuvre lors de l'extension de la FUL. Présentation du bilan des performances de ca ... [more ▼]

Description des différentes technologies solaires passives: systèmes à gain direct, murs de masse et serres, mises en oeuvre lors de l'extension de la FUL. Présentation du bilan des performances de ca bâtiment basé sur deux années complètes de mesures intensives [less ▲]

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See detailUse of an expert system for the real time control of a solar building
Nicolas, Jacques ULiege; Andre, Philippe ULiege; Rivez, Jean-François et al

in Proceedings ISES 91 Congress (1991, August)

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See detailL'inertie dans la maison individuelle : un gain de consommation énergétique ? Simulation et étude de cas
Nicolas, Jacques ULiege; Andre, Philippe ULiege; Rivez, Jean-François et al

in Revue Generale de Thermique (1991), 30(352), 240-249

L'inertie thermique dans le bâtiment est l'une des composantes les plus étudiées en architecture bioclimatique. Le principal intérêt d'une grande capacité thermique est d'assurer le confort, surtout ... [more ▼]

L'inertie thermique dans le bâtiment est l'une des composantes les plus étudiées en architecture bioclimatique. Le principal intérêt d'une grande capacité thermique est d'assurer le confort, surtout durant l'été, en déphasant les apports extérieurs et en atténuant les fluctuations de la température extérieure. L'inertie a beaucoup été étudiée dans des cellules-tests. La démarche décrite dans cet article se base sur une modélisation par le logiciel Suncode de différentes variantes d'une maison unifamiliale, représentative du parc de logement belge. Pour une maison purement passive, il s'avère que la consommation énergétique annuelle est beaucoup moins sensible à l'inertie qu'à l'isolation de la maison. Une saturation de consommation est même atteinte pour de grandes inerties. Pour assurer un déphasage supérieur à une journée, il conviendrait de favoriser un système actif de captation de l'énergie solaire qui serait directement injectée dans le milieu des parois épaisses de la maison. [less ▲]

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See detailAn expert system for the real time control of a building heating plant
Nicolas, Jacques ULiege; Andre, Philippe ULiege; Rivez, Jean-François et al

in Proceedings of the Third international conference on system simulation in buildings (1990, December)

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See detailFinite-elements design of a guarded heating cylinder to measure thermal properties of materials
Nicolas, Jacques ULiege; Martin, Fabrice; Andre, Philippe ULiege et al

in Review of Scientific Instruments (1990), 61

A device for the measurement of thermal properties of phase change materials and, in general, of medium thermal conductivity materials, is described. The measuring cell is a modified version of the ... [more ▼]

A device for the measurement of thermal properties of phase change materials and, in general, of medium thermal conductivity materials, is described. The measuring cell is a modified version of the guarded hot plate technique, here designed for about 8-cm-diam samples. A well-known difficulty arises in such a device: its limitation when the sample cross section becomes too small with respect to its thickness. A finite-element model is used to study the shape of isotherms in a thick sample (10 cm) for different configurations of the measuring device. This analysis has led to the selection of the optimum design. It shows that the instrument is able to handle samples with a diameter to thickness ratio of about 1 so far as the heat transfer coefficient remains beneath some limits (here 100 W/m2 K). The control system is also described and some typical results are presented. Review of Scientific Instruments is copyrighted by The American Institute of Physics. [less ▲]

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See detailModel-based adaptive control of drug infusion rate.
Andre, Philippe ULiege; Bachy, J.-L.; Col, J.

in Proceedings of Congres Computers in cardiology (1985)

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