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| Authors: | O. Jolliet, M. Bourgeois, L. Danloy, J.-B. Gay, S. Mantilleri, C. Moncousin |
Abstract:
The following results are based on measurements taken between September 1983 and June 1984 :
- an ethylene thermal screen (EVA) and a chromecoated one (Hechotherm) showed reductions in the nightly thermal transmittance through the roof of 35 % and 47 % respectively, (52 % if they are used simultaneously).
- below the screens, the leaf temperature of the plant was in average 0.4 K higher than for unscreened plants at the same air temperature
- the influence of the sky temperature is important.
It may lead to variations in the heat requirement of more than 50 %
- as wind and sky temperature effects are interdependent a method for evaluating them separately has been found.
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