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Experimental Study of Free Convection in a Room Model Using a Collector Storage Wall

P. Calvet
ONERA-CERT-DERMES, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse Cédex, France

Pierre Millan
Onera – Centre de Toulouse Département Modèles pour l'Aérodynamique et l'Energétique 2, Avenue Edouard Belin B.P 4025 31055 Toulouse cedex 4 – France

Abstract

A small size room model using a Trombe wall system has been designed to make a qualitative as well as quantitative approach of convection and heat transfer aspects. The air flow is supposed to be under steady state and laminar conditions. From the following experimental measurements obtained in the model (i.е).

    - velocity profiles mesured by Doppler laser Anemometer
    - temperature distributions
Different results were deduced, such as :
    - 1) air flow motion inside the room
    - 2) influence of each wall on the thermal balance
    - 3) convective heat transfer inside the system.
Coupling between the room and the Trombe wall structure is therefore carac-terized. Taking these results into account, we developped a modelisation based on a network model and implemented it on a microcomputer.

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