Annals of the Assembly for International Heat Transfer Conference 13

ISBN 1-56700-225-0 / CD 1-56700-226-9

Year 2006

P. Charvat
Brno University of Technology, Brno, Czech Republic

M. Scholler
Brno University of Technology, Brno, Czech Republic

Miroslav Jicha
Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic

Josef Stetina
Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech Republic

A solar chimney is a device that, in simple terms, converts solar energy into kinetic energy of air motion. The solar radiation induced airflow in a solar chimney represents a complex heat transfer problem, which involves conduction, convection, radiation and even a phase change when phase-change heat storage is used. The solar chimneys can be employed in many applications. The ever increasing consumption of energy for ventilation and air treatment in building has drawn attention to natural ventilation. Therefore, one of the areas where the solar chimneys could be employed is ventilation and passive cooling. The experimental and numerical investigations of the performance of solar chimneys for hybrid residential ventilation under the climatic conditions of the Czech Republic have been performed at the Brno University of Technology. The experimental investigations have been done on the experimental chimneys built on the roof of a laboratory and on the chimneys in an experimental house with hybrid ventilation. Two different constructions of the solar chimney were tested; a light-weight construction and a construction containing thermal mass. The Computational Fluid Dynamics (CFD) has been employed as a simulation tool for the analysis of the impact of the inclination angle of the solar collector on the solar chimney performance. The 3D models of the chimneys were created and the transient simulations carried out.

ENR-06 pages DOI: 10.1615/IHTC13.p24.60 Download article

Article price - $35.00

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