Heat loss to the ground from a building : slab on the ground and cellar
(1988) Abstract
 Heated buildings induce a heat flow from the building foundation into the ground. The topic of this thesis is the thermal process in the ground and, in particular, the heat losses from the building to the ground. Foundations of the three types slab on the ground, cellar, and crawlspace are dealt with. The crawlspace is treated in separate report.
A reasonably complete theory for the thermal processes, and in particular the heat loss, is expounded. Dimensionless formulation, superposition technique, and analytical solutions for basic periodic and stepresponse components are used. The threedimensional, steadystate heat loss component is obtained from numerical solutions.
An accurate and manageable... (More)  Heated buildings induce a heat flow from the building foundation into the ground. The topic of this thesis is the thermal process in the ground and, in particular, the heat losses from the building to the ground. Foundations of the three types slab on the ground, cellar, and crawlspace are dealt with. The crawlspace is treated in separate report.
A reasonably complete theory for the thermal processes, and in particular the heat loss, is expounded. Dimensionless formulation, superposition technique, and analytical solutions for basic periodic and stepresponse components are used. The threedimensional, steadystate heat loss component is obtained from numerical solutions.
An accurate and manageable calculation method for heat losses to the ground has been developed. The method, which is based on both numerical calculations and analytical solutions, accounts for threedimensional effects and the timevarying outdoor temperature in a proper way.
The results from eight reports are used in the thesis:
1. Heat loss at the edge of a thermally insulated slab on the ground. Wiener Hopf solution for periodic and stepchange air temperature. Hagentoft CE, Claesson J, Wallin N0, 1985.
2. Temperature under a totally insulated slab on the ground due to variable ground surface temperature. Hagentoft, 1985.
3. Heat loss and temperature for a cellar of infinite depth. Periodic and step change air temperature. Hagentoft CE, 1987.
4. Steady state ground temperature and heat loss for a thermally insulated slab on the ground. Equal insulation thickness outside and inside the house. Hagentoft CE, 1987.
5. Semianalytical method for the temperature in the ground under a house with variable insulation thickness. Hagentoft C E 1987. (Accepted for publication in International Journal of Building Science and its Applications.)
6. Analytical solution for the steadystate temperature in the ground at the edge of an insulaled cellar. Hagentoft CE, 1987.
7. PCprogram: Design rules for the slab on the ground and the cellar. Hagentoft CE, 1988.
8. An analytical model for crawlanalytical model for crawlspace temperatures and heat flows. Steadystate, periodic and stepresponse components, Hagentoft CE, 1986 (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8056135
 author
 Hagentoft, CarlEric
 supervisor

 Johan Claesson ^{LU}
 opponent

 unknown], [unknown
 publishing date
 1988
 type
 Thesis
 publication status
 published
 subject
 keywords
 Heat loss, heat transfer in the ground, thermal analysis, slab, cellar, crawlspace
 pages
 216 pages
 publisher
 Byggnadsfysik LTH, Lunds Tekniska Högskola
 defense location
 Sektionen för väg och vattenbyggnad, John Ericssons väg 1, Hörsal V:A, Tekniska fakulteten vid Lunds universitet
 defense date
 19880520 13:15:00
 external identifiers

 other:TVBH1004
 ISBN
 9179004431
 language
 English
 LU publication?
 no
 id
 15cef9572773424c9c6769d4cee2e2a9 (old id 8056135)
 alternative location
 http://www.byfy.lth.se/publikationer/tvbh1000/
 date added to LUP
 20160401 17:10:11
 date last changed
 20181121 20:47:11
@phdthesis{15cef9572773424c9c6769d4cee2e2a9, abstract = {{Heated buildings induce a heat flow from the building foundation into the ground. The topic of this thesis is the thermal process in the ground and, in particular, the heat losses from the building to the ground. Foundations of the three types slab on the ground, cellar, and crawlspace are dealt with. The crawlspace is treated in separate report.<br/><br> <br/><br> A reasonably complete theory for the thermal processes, and in particular the heat loss, is expounded. Dimensionless formulation, superposition technique, and analytical solutions for basic periodic and stepresponse components are used. The threedimensional, steadystate heat loss component is obtained from numerical solutions.<br/><br> <br/><br> An accurate and manageable calculation method for heat losses to the ground has been developed. The method, which is based on both numerical calculations and analytical solutions, accounts for threedimensional effects and the timevarying outdoor temperature in a proper way. <br/><br> <br/><br> The results from eight reports are used in the thesis: <br/><br> <br/><br> 1. Heat loss at the edge of a thermally insulated slab on the ground. Wiener Hopf solution for periodic and stepchange air temperature. Hagentoft CE, Claesson J, Wallin N0, 1985. <br/><br> 2. Temperature under a totally insulated slab on the ground due to variable ground surface temperature. Hagentoft, 1985. <br/><br> 3. Heat loss and temperature for a cellar of infinite depth. Periodic and step change air temperature. Hagentoft CE, 1987. <br/><br> 4. Steady state ground temperature and heat loss for a thermally insulated slab on the ground. Equal insulation thickness outside and inside the house. Hagentoft CE, 1987. <br/><br> 5. Semianalytical method for the temperature in the ground under a house with variable insulation thickness. Hagentoft C E 1987. (Accepted for publication in International Journal of Building Science and its Applications.)<br/><br> 6. Analytical solution for the steadystate temperature in the ground at the edge of an insulaled cellar. Hagentoft CE, 1987. <br/><br> 7. PCprogram: Design rules for the slab on the ground and the cellar. Hagentoft CE, 1988. <br/><br> 8. An analytical model for crawlanalytical model for crawlspace temperatures and heat flows. Steadystate, periodic and stepresponse components, Hagentoft CE, 1986}}, author = {{Hagentoft, CarlEric}}, isbn = {{9179004431}}, keywords = {{Heat loss; heat transfer in the ground; thermal analysis; slab; cellar; crawlspace}}, language = {{eng}}, publisher = {{Byggnadsfysik LTH, Lunds Tekniska Högskola}}, title = {{Heat loss to the ground from a building : slab on the ground and cellar}}, url = {{https://lup.lub.lu.se/search/files/4896022/8056211.pdf}}, year = {{1988}}, }