ISHS Acta Horticulturae 115: Symposium on More Profitable Use of Energy in Protected Cultivation
PHOTOMETRIC PROPERTIES OF DOUBLE WALL PLASTICS USED AS COVERING FOR GREENHOUSES |
| Authors: | A. NISEN, S. COUTSSE |
| Abstract:
The photometric properties of some "double wall insulating" plastics used as greenhouse cover were established following the general technical card of the NBN 894. A first approach of agronomic presentation of these data is proposed. Sharp differences appear between the materials actually on the market, in relation with their chemical composition, their fabrication, their thickness … The importance of the knowledge of the reflection properties of the materials and of their transmission factor in diffused light (esp. cloudy sky) is shown. | |
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