Abo Bibliothek: Guest
ICHMT DL Home Aktuelles Jahr Archive Vorstand International Centre for Heat and Mass Transfer


DOI: 10.1615/ICHMT.2008.CHT.2370
22 pages

Stephanie Giroux-Julien
Univ Lyon, CNRS, INSA-Lyon, Université Claude Bernard Lyon 1, CETHIL UMR5008, F-69621, Villeurbanne, France

Christophe Menezo
Universite de Lyon, CNRS, France ; Chaire INSA-EDF Habitats et Innovations Energetiques, CETHIL, UMR5008, F-69621, Villeurbanne, France; University Savoie Mont-Blanc, LOCIE UMR CNRS 5271, Campus Scientifique Savoie Technolac − F- 73376, Le Bourget-du-Lac, France

Jeremie Vareilles
Centre de Thermique de Lyon UMR 5008, (CETHIL, CNRS/INSA Lyon/UCBL), Lyon, France

Hervé Pabiou
Univ Lyon, CNRS, INSA-Lyon, Universite Claude Bernard Lyon 1, CETHIL UMR5008, F-69621, Villeurbanne, France

Marco Fossa
Dime, Universita di Genova, Via Opera Pia 15a, 16145 Genova, Italy


Interests of this paper concern an active component of the building envelope: a photovoltaic-thermal (PV-T) double-skin facade. This element consists of a vertical open air channel bounded by two parallel walls: one made of photovoltaic panels and one been the main frame of the building. The integration of this system in building facade remains not so obvious because electrical output is strongly dependent on the operating temperature of PV component. The aim carried out by our work is to promote a better cooling of the PV facade working on its typical geometrical arrangement. It consists of an alternation of PV cells (localized heat sources) and semi-transparent window panes (unheated zones). Fundamentally, the flow of natural convection which develops within the vertical channel appears to be subjected to boundary localized thermally active areas and adiabatic areas, periodically distributed on the height.
That requires investigations on parametric variations of magnitude and space frequency of heated areas as well as intermediate spacing. The following approach, included in a joint research program between 3 laboratories, the CFD Research Laboratory UNSW (Sydney), CETHIL (Lyon) and DIPTEM (Genoa), in both the experimental and numerical nature of the work.
Two complementary experimental apparatuses have been developed, respectively at CETHIL and at CFD Research Laboratory UNSW in collaboration with the DIPTEM. Experiments were performed on both. For these experiments Grashof numbers, based on the channel width and the convective heat flux, are about 1010. Results that have been obtained constitute an important data base which allows characterizing convective heat transfer. Some concern dynamic boundary conditions which are strongly required for the numerical investigation. First results have been presented concerning the UNSW apparatus (e.g. Ménézo et al. [2007]). The present study consists in a comparison (on a common operating range) among both experiments and numerical investigations focusing on the CETHIL experiments.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH