Three-dimensional modelling of heat transfer from slab floors

Research output: Chapter in Book/Report/Conference proceedingChapter

8 Citations (Scopus)

Abstract

Earth-coupled heat transfer processes have been recognized in recent years as a potential source of significant energy savings in both conventional and earth-sheltered designs. Because of the complexity of the building/soil/atmosphere interaction, however, important aspects of earth-coupled heat transfer are not well understood. There is a particular lack of three-dimensional foundation heat loss data. In this study, a detailed three-dimensional finite difference model of a slab floor was used to generate 93 annual simulations in parametric groups focusing on effects of size and shape, soil properties, boundary conditions, climate, insulation, and building shadow. These results indicate that soil thermal conductivity, ground surface conditions, foundation design, and floor shape/size are essential elements of a general change in heat transfer rate. Effects of thermal diffusivity, and lower boundary condition variation were small (on the order of 10%) for the range of conditions considered.

Original languageEnglish (US)
Title of host publicationTechnical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory
VolumeE-89
Edition11
StatePublished - Jul 1 1989

Fingerprint

Earth (planet)
Heat transfer
Soils
Boundary conditions
Earth atmosphere
Thermal diffusivity
Heat losses
Insulation
Thermal conductivity
Energy conservation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Bahnfleth, W. P. (1989). Three-dimensional modelling of heat transfer from slab floors. In Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory (11 ed., Vol. E-89)
Bahnfleth, William P. / Three-dimensional modelling of heat transfer from slab floors. Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory. Vol. E-89 11. ed. 1989.
@inbook{bdfab5b7e96343d39a8b2c4b6d692180,
title = "Three-dimensional modelling of heat transfer from slab floors",
abstract = "Earth-coupled heat transfer processes have been recognized in recent years as a potential source of significant energy savings in both conventional and earth-sheltered designs. Because of the complexity of the building/soil/atmosphere interaction, however, important aspects of earth-coupled heat transfer are not well understood. There is a particular lack of three-dimensional foundation heat loss data. In this study, a detailed three-dimensional finite difference model of a slab floor was used to generate 93 annual simulations in parametric groups focusing on effects of size and shape, soil properties, boundary conditions, climate, insulation, and building shadow. These results indicate that soil thermal conductivity, ground surface conditions, foundation design, and floor shape/size are essential elements of a general change in heat transfer rate. Effects of thermal diffusivity, and lower boundary condition variation were small (on the order of 10{\%}) for the range of conditions considered.",
author = "Bahnfleth, {William P.}",
year = "1989",
month = "7",
day = "1",
language = "English (US)",
volume = "E-89",
booktitle = "Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory",
edition = "11",

}

Bahnfleth, WP 1989, Three-dimensional modelling of heat transfer from slab floors. in Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory. 11 edn, vol. E-89.

Three-dimensional modelling of heat transfer from slab floors. / Bahnfleth, William P.

Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory. Vol. E-89 11. ed. 1989.

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Three-dimensional modelling of heat transfer from slab floors

AU - Bahnfleth, William P.

PY - 1989/7/1

Y1 - 1989/7/1

N2 - Earth-coupled heat transfer processes have been recognized in recent years as a potential source of significant energy savings in both conventional and earth-sheltered designs. Because of the complexity of the building/soil/atmosphere interaction, however, important aspects of earth-coupled heat transfer are not well understood. There is a particular lack of three-dimensional foundation heat loss data. In this study, a detailed three-dimensional finite difference model of a slab floor was used to generate 93 annual simulations in parametric groups focusing on effects of size and shape, soil properties, boundary conditions, climate, insulation, and building shadow. These results indicate that soil thermal conductivity, ground surface conditions, foundation design, and floor shape/size are essential elements of a general change in heat transfer rate. Effects of thermal diffusivity, and lower boundary condition variation were small (on the order of 10%) for the range of conditions considered.

AB - Earth-coupled heat transfer processes have been recognized in recent years as a potential source of significant energy savings in both conventional and earth-sheltered designs. Because of the complexity of the building/soil/atmosphere interaction, however, important aspects of earth-coupled heat transfer are not well understood. There is a particular lack of three-dimensional foundation heat loss data. In this study, a detailed three-dimensional finite difference model of a slab floor was used to generate 93 annual simulations in parametric groups focusing on effects of size and shape, soil properties, boundary conditions, climate, insulation, and building shadow. These results indicate that soil thermal conductivity, ground surface conditions, foundation design, and floor shape/size are essential elements of a general change in heat transfer rate. Effects of thermal diffusivity, and lower boundary condition variation were small (on the order of 10%) for the range of conditions considered.

UR - http://www.scopus.com/inward/record.url?scp=0024703174&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024703174&partnerID=8YFLogxK

M3 - Chapter

AN - SCOPUS:0024703174

VL - E-89

BT - Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory

ER -

Bahnfleth WP. Three-dimensional modelling of heat transfer from slab floors. In Technical Manuscript - United States Army Corps of Engineers, Construction Engineering Research Laboratory. 11 ed. Vol. E-89. 1989