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Influence of two new greenhouse covering materials on greenhouse microclimate and cooling load
dc.creator | Kitta, E. | en |
dc.creator | Bartzanas, T. | en |
dc.creator | Katsoulas, N. | en |
dc.date.accessioned | 2015-11-23T10:34:58Z | |
dc.date.available | 2015-11-23T10:34:58Z | |
dc.date.issued | 2012 | |
dc.identifier.isbn | 9789066053380 | |
dc.identifier.issn | 5677572 | |
dc.identifier.uri | http://hdl.handle.net/11615/29455 | |
dc.description.abstract | Aim of this paper was to study the effects of a new polyethylene (PE) film with high reflectance and absorption in near infrared radiation (NIR-PE) and of a new PE film with low transmittance in infrared radiation IR (IR-PE), on greenhouse microclimate and cooling load of a hydroponic tomato crop. Films were evaluated in the laboratory and experimentally in three similar arched roof greenhouses, two covered with the new covering materials and the third one by a common PE film (CPE). The greenhouse and outside microclimate parameters along with crop growth and production were recorded. Laboratory measurements show that in the total radiation band the NIR-PE film has 13% lower transmissivity than the other two films and 57% higher absorptivity than the C-PE film. Experimental results show that the NIR-PE covering material reduces significantly the solar radiation entering the greenhouse and resulted in a temperature drop up to 2°C than the air temperature of the C-PE covered greenhouse. The total production per m2 was 12.12 kg, 12.00 kg and 10.25 kg under the IR-PE, the NIR-PE and the C-PE covered greenhouses, respectively with no significant differences between the three greenhouses. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-84863659138&partnerID=40&md5=38f4c52d4fe3fbc352225f6158a27fcd | |
dc.subject | Air temperature | en |
dc.subject | Energy saving | en |
dc.subject | Relative humidity | en |
dc.subject | Lycopersicon esculentum | en |
dc.title | Influence of two new greenhouse covering materials on greenhouse microclimate and cooling load | en |
dc.type | other | en |
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