Thesis (MScEng)--Stellenbosch University, 2005. / ENGLISH ABSTRACT: The convection heat transfer coefficient between an infinite, horizontal surface and the natural
environment is determined experimentally. It is shown that, during daytime, heat is
transferred due to natural and forced convection, while during nighttime heat is transferred
due to conduction and forced convection. Equations that correlate the daytime and nighttime
convective heat transfer coefficients respectively, are presented. The results are compared
with values obtained by other investigators.
The equations for the convection heat transfer coefficient are then used to predict the surface
temperature and the temperature at depth of asphalt pavement samples using a simulation
model. It is found that there is good agreement between the measured and the predicted
asphalt pavement sample temperatures. / AFRIKAANSE OPSOMMING: Die konveksie warmteoordrags-koëffisiënt tuseen 'n oneindige, horisontale oppervlak en die
natuurlike omgewing is eksperimenteel bepaal. Daar word getoon dat warmte, tydens die
dag, oorgedra word deur natuurlike en geforseerde konveksie, terwyl warmte tydens die nag
oorgedra word deur geleiding en geforseerde konveksie. Die resultate word vergelyk met die
resultate van ander navorsers. Vergelykings wat die konveksie warmteoordrags-koëffisiënt
gedurende die dag en nag onderskeidelik korreleer word voorgestel.
Die vergelykings vir die konveksie warmteoordrags-koëffisiënt word dan gebruik in 'n
simulasiemodel om die oppervlaktemperatuur en die temperatuur onder die oppervlakte van
asfalt-padoppervlakmonsters te voorspel.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/50422 |
| Date | 04 1900 |
| Creators | Burger, Marco |
| Contributors | Kroger, D. G., Stellenbosch University. Faculty of Engineering. Dept. of Mechanical & Mechatronic engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | English |
| Type | Thesis |
| Format | 88 p. : ill. |
| Rights | Stellenbosch University |
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