The Orchid Doctor Articles under the Heading Solar Chimney

Solar Chimney Comments
SOLAR CHIMNEY: A Ventilator for Greenhouses It harnesses the heat of the sun for a chimney 2 feet square rising 12 feet above the greenhouse roof, painted black on the inside except for the south exposure which is glazed, with a trap at the base which is level with the roof and which opens when an updraft is caused by the sun heating the chimney; the hotter the temperature, the greater the updraft; all details, refer to AU84-11 0

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  1. Claudia Young asked question RO system in category General Discussion
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  3. Tatjana Opekunova asked question Cattleya new roots and Flower buds in category Cattleya Alliance
  4. Mary Lane asked question Orchid roots .com site? in category General Discussion
  5. David George asked question recently purchased orchid shows unstoppable roots in category General Discussion
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  1. Kevin Barry commented on member plant Bul. Tammie Sue Pernas by Tony Pernas
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  4. William Gorski commented on topic "Orchid roots .com site?" by Mary Lane
  5. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George
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