Author, as appears in the article.: Laafer, Abdelkader; Semmar, Djaffar; Hamid, Abdelkader; Bourouis, Mahmoud;

Department: Enginyeria Mecànica

URV's Author/s: Bourouis Chebata, Mahmoud

Keywords: Underfloor heating systems Underfloor heating Thermal comfort Terminals Temperature profiles Surface radiosity Solar-energy Solar energy Radiative heat transfer Radiant floor Performance evaluation Numerical-simulation Meteorological condition Indoor temperature Heating equipment Heating Fluid temperatures Floor heating systems Floor cooling system Energy efficiency Design Conduction Comsol multiphysics Composite slab Buildings Bioclimatic habitat Atmospheric temperature Air

Abstract: This paper addresses the modeling of convective and radiative heat transfer to achieve an acceptable level of indoor temperature. The results presented were obtained in a pilot project in which an energy-efficient house was built on a site located west of Algiers. The main objective was to perform a numerical simulation to investigate how the temperature of the heat-transfer fluid circulating in the floor heating system affected the temperature of the indoor air and also how surface radiosity affected the temperature profile of the indoor air. The study employed the finite element method integrated into the Comsol Multiphysics software. The model was validated using experimental data reported in the literature for the pilothouse at the same meteorological conditions. An error of about 2.32% was apparent between the experimental and theoretical results. Results showed that the increase of the heating transfer fluid temperature from 30 to 50 degrees C produced the same temperature of about 15.1 degrees C taken at a 50 cm height inside the room. The air temperature remained stable, with an insignificant variation after 72 h of heating. Surface radiosity increased as a function of time and reached an almost constant value of 380 W center dot m(-2) after 72 h because of the stability of the air temperature by convection.

Thematic Areas: Zootecnia / recursos pesqueiros Renewable energy, sustainability and the environment Interdisciplinar General computer science Fuel technology Engineering (miscellaneous) Engenharias iv Engenharias iii Engenharias ii Energy engineering and power technology Energy (miscellaneous) Energy & fuels Electrical and electronic engineering Economia Control and optimization Ciências ambientais Ciências agrárias i Ciência da computação Building and construction Biotecnología Biodiversidade Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: mahmoud.bourouis@urv.cat

Author identifier: 0000-0003-2476-5967

Record's date: 2023-06-12

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1996-1073/14/13/3880

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Energies. 14 (13):

APA: Laafer, Abdelkader; Semmar, Djaffar; Hamid, Abdelkader; Bourouis, Mahmoud; (2021). Thermal and Surface Radiosity Analysis of an Underfloor Heating System in a Bioclimatic Habitat. Energies, 14(13), -. DOI: 10.3390/en14133880

Article's DOI: 10.3390/en14133880

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications