ISHS Acta Horticulturae 46: Symposium on Greenhouse Design and Environment
STUDY OF GLASSHOUSE TYPE AND ORIENTATION |
| Author: | R.F. Harnett |
| Abstract:
Four 0.1 ha glasshouses were erected at Efford Experimental Horticulture Station, Hants, to compare yield from a range of crops and measure transmission of solar radiation. A multispan structure with East-West orientation gave a higher solar-radiation measurement and produced tomatoes with a better total-yield than an identical structure orientated North-South and two wide, clearspan structures. One of the single widespan structures was of conventional design with a 26° pitched roof and the other designed with a mansard-shaped roof. The solar radiation transmission was higher in the two widespan structures around the winter solstice and earlier-maturing lettuce were harvested in these houses at this time compared with the multispan structures. There was no significant difference between the two widespan structures. | |
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