| dc.contributor.author |
Papadakis, G |
en |
| dc.contributor.author |
Frangoudakis, A |
en |
| dc.contributor.author |
Kyritsis, S |
en |
| dc.date.accessioned |
2014-06-06T06:41:47Z |
|
| dc.date.available |
2014-06-06T06:41:47Z |
|
| dc.date.issued |
1989 |
en |
| dc.identifier.issn |
00218634 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/255 |
|
| dc.relation.uri |
http://www.scopus.com/inward/record.url?eid=2-s2.0-38249026642&partnerID=40&md5=1c766c523eebd647b383395960bb2e40 |
en |
| dc.title |
Theoretical and experimental investigation of thermal radiation transfer in polyethylene covered greenhouses |
en |
| heal.type |
journalArticle |
en |
| heal.publicationDate |
1989 |
en |
| heal.abstract |
A theoretical analysis has been developed to calculate thermal radiation transfer in an arbitrary number of enclosures having common surfaces partially transparent to long wavelength radiation. The objective of the analysis was to provide a general set of equations describing thermal radiation exchange among all surfaces of all enclosures. A numerical method was proposed for the solution of this set of equations, to calculate the net thermal radiation flux of each surface of each enclosure. The analysis was applied to a twin span greenhouse covered with polyethylene film, in order to calculate the net radiation flux of each surface of the greenhouse enclosure, taking into account its three dimensional geometry. The analysis also takes into account, the properties of the polyethylene film cover and those of the ground inside and outside the greenhouse. All greenhouse cover surfaces are treated as having different temperatures. Comparison of the calculated net radiation fluxes (taking into account solar irradiance as well) at two different ground locations inside the greenhouse with measured ones, was shown to be in good agreement over the course of a 24 h period. © 1989 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 |
44 |
en |
| dc.identifier.spage |
97 |
en |
| dc.identifier.epage |
111 |
en |