| dc.contributor.author |
Papadakis, G |
en |
| dc.contributor.author |
Giaglaras, P |
en |
| dc.contributor.author |
Kyritsis, S |
en |
| dc.date.accessioned |
2014-06-06T06:41:55Z |
|
| dc.date.available |
2014-06-06T06:41:55Z |
|
| dc.date.issued |
1990 |
en |
| dc.identifier.issn |
00218634 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/333 |
|
| dc.relation.uri |
http://www.scopus.com/inward/record.url?eid=2-s2.0-45149140300&partnerID=40&md5=b279c734276e42e63042ae53460b178b |
en |
| dc.title |
A numerical method for determining thermal conductivity of porous media from in-situ measurements using a cylindrical heat source |
en |
| heal.type |
journalArticle |
en |
| heal.publicationDate |
1990 |
en |
| heal.abstract |
A device developed to determine the thermal conductivity of a porous media is described. The thermal conductivity is obtained by numerical solution of the equation of heat transfer in solids. Measurements were taken in a dry fine sand to determine the apparent thermal conductivity, using a wide range of heating powers and heating times. The results of the numerical method were compared with those obtained by the classical analytical method. The results of both methods (numerical and analytical) were very close to those given by the sphere steady-state method. The numerical method offers some advantages over the analytical one. Since it may be used with high speed digital computers, it is faster than the analytical one. The latter is burdened by the ""time correction"" calculation procedure. In addition, the numerical method provides a criterion for estimating the accuracy with which thermal coductivity is determined, and takes into account the thermal conductivity of the device itself. © 1990 The British Society for Research in Agricultural Engineering. |
en |
| heal.journalName |
Journal of Agricultural Engineering Research |
en |
| dc.identifier.issue |
C |
en |
| dc.identifier.volume |
45 |
en |
| dc.identifier.spage |
281 |
en |
| dc.identifier.epage |
293 |
en |