The amount of light transmitted through a greenhouse is a critical factor for production of greenhouse grown crops. Factors that affect irradiation transmissivity to the plants are latitude, greenhouse orientation, glazing material, roof slope, and obstructions within the greenhouse. Irradiation data at plant level within three greenhouses at different locations was measured and compared to corresponding global horizontal irradiation levels. Overall transmission efficiencies varied; 52% for a wide spanned twin walled greenhouse, 39% for glass Venlo design greenhouse, and 35% for a double-poly Venlo greenhouse.
|Original language||English (US)|
|Journal||Paper - American Society of Agricultural Engineers|
|State||Published - Dec 1 1997|
|Event||Proceedings of the 1997 ASAE Annual International Meeting. Part 1 (of 3) - Minneapolis, MN, USA|
Duration: Aug 10 1997 → Aug 14 1997