Heat loss into ground from a slab-on-ground structure in a floor heating system
2006; Wiley; Volume: 30; Issue: 12 Linguagem: Inglês
10.1002/er.1190
ISSN1099-114X
Autores Tópico(s)Soil and Unsaturated Flow
ResumoInternational Journal of Energy ResearchVolume 30, Issue 12 p. 929-938 Research Article Heat loss into ground from a slab-on-ground structure in a floor heating system Jukka Rantala, Corresponding Author Jukka Rantala [email protected] Innosteel, Hame University of Applied Sciences, Laajamäentie 1, 13430 Hämeenlinna, FinlandInnosteel, Hame University of Applied Sciences, Laajamäentie 1, 13430 Hämeenlinna, FinlandSearch for more papers by this authorVirpi Leivo, Virpi Leivo Laboratory of Structural Engineering, Tampere University of Technology, P.O. Box 600, 33101 Tampere, FinlandSearch for more papers by this author Jukka Rantala, Corresponding Author Jukka Rantala [email protected] Innosteel, Hame University of Applied Sciences, Laajamäentie 1, 13430 Hämeenlinna, FinlandInnosteel, Hame University of Applied Sciences, Laajamäentie 1, 13430 Hämeenlinna, FinlandSearch for more papers by this authorVirpi Leivo, Virpi Leivo Laboratory of Structural Engineering, Tampere University of Technology, P.O. Box 600, 33101 Tampere, FinlandSearch for more papers by this author First published: 27 April 2006 https://doi.org/10.1002/er.1190Citations: 6AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The objective of this research was to determine the actual heat loss into the subsoil from a massive slab-on-ground structure in a low temperature floor heating system. The main objective was achieved by field test measurements of an actual new building in Southern Finland. The test building is a detached house including a massive concrete slab, an underneath polystyrene insulation and a crushed stone fill layer on top of the clay subsoil. The heat loss into subsoil is determined from the measured temperature difference over the slab cross-section during a 1-year measuring period. The long-term behaviour of the structure was also studied by numerical simulations using 2D FE-modelling. According to the field test results and the simulations, the increase of the slab temperature in winter increases significantly the flow rates into the subsoil, also at the central part of the slab. Theoretical calculations for a standard building show that the heat loss into the subsoil from slab-on-ground structures is a significant part of the total heat loss from a building and the intensity of the heat loss is strongly dependent on the average temperature of the slab structure. The effect of the various floor heating systems on the total energy consumption of a building should be taken into consideration when designing the thermal insulation of ground slabs. Copyright © 2005 John Wiley & Sons, Ltd. REFERENCES Adjali MH, Davies M, Ni Riain C, Littler JG. 2000. In situ measurements and numerical simulation of heat transfer beneath a heated ground floor slab. Energy and Buildings 33: 75– 83. Athientis AK. 1993. Experimental and theoretical investigation of floor heating with thermal storage. ASHRAE Transactions 93: 1049– 1057. Chuangchid P, Krarti M. 2001. Foundation heat loss from heated concrete slab-on-grade floors. Building and Environment 36(5): 637– 655. Claesson J, Hagentoft C-E. 1991. Heat loss to the ground from a building—I. General theory. Building and Environment 26(2): 195– 208. Delsante AE, Stokes AN. 1983. Application of Fourier transforms to periodic heat flow into the ground under the building. International Journal of Heat and Mass Transfer 26(1): 121– 132. Deru MP, Kirkpatrick AT. 2001. Ground-coupled heat and moisture transfer from buildings. Part 2: Application. The American Solar Energy Society National Solar Conferences Forum 2001, NREL/CP-550–29694, 7. EN 832. 1998. Thermal performance of buildings—calculation of energy use for heating—residential buildings. EN ISO 13789. 1997. Thermal performance of buildings—transmission heat loss coefficient—calculation method. EN ISO 13370. 1998. Thermal performance of buildings—heat transfer via the ground—calculation methods. Hagentoft C-E. 1988. Heat loss to the ground from a building, slab on ground and cellar. Report TVBH-1004, Department of Building Technology, Lund Institute of Technology, April, 216. Hagentoft C-E. 1996. Heat losses and temperature in the ground under a building with and without ground water flow-II. Finite ground water flow rate. Building and Environment 31(1): 13– 19. Kersten MS. 1949. Thermal properties of soils. Bulletin No. 28, Engineering Experiment Station, University of Minnesota. Krarti M, Claridge DE, Kreider JF. 1988a. The ITPE technique applied to steady-state ground-coupling problems. International Journal of Heat and Mass Transfer 31(9): 1885– 1898. Krarti M, Claridge DE, Kreider JF. 1988b. ITPE technique applications to time-varying two-dimensional ground-coupling problems. International Journal of Heat and Mass Transfer 31(9): 1899– 1911. Krarti M, Claridge DE, Kreider JF. 1990. ITPE technique applications to time-varying three-dimensional ground-coupling problems. Journal of Heat Transfer (ASME) 112: 849– 852. Lood A. 1996. An experimental and theoretical study of floor heating with thermal storage. Building physics in the nordic countries. Proceedings of the 4th Symposium, vol. 1. VTT Building Technology, August, 173– 180. Mitalas GP. 1983. Calculation of basement heat loss. ASHRAE Transactions 89(1): 420– 437. Mitalas GP. 1987. Calculation of below-grade residential heat loss: low-rise residential building. ASHRAE Transactions 93(1): 743– 784. Muncey RWR, Spencer JW. 1978. Heat flow into the ground under a house. Energy Conversation in Heating, Cooling and Ventilating Buildings, vol. 2. Hemisphere Publishing Corp: Washington 89(1): 649– 660. Rees SW, Zhou Z, Thomas HR. 2001. The influence of soil moisture content variations on heat losses from earth-contact structures; an initial assessment. Building and Environment 36: 157– 165. Roots P. 2000. Mätning av fuktförhållande och värmetransport till underliggande mark I en grund som utföres med golvvärme. Working Paper No. 14, University of Gävle, 18 (in Swedish). Zhou Z, Rees SW, Thomas HR. 2002. A numerical and experimental investigation of ground heat transfer including edge insulation effects. Building and Environment 37: 67– 78. Citing Literature Volume30, Issue1210 October 2006Pages 929-938 ReferencesRelatedInformation
Referência(s)