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

New Topics

  1. Pam Alexander asked question How to repot a Mattie Shave in category General Discussion
  2. Rae Walker asked question Name help in category General Discussion
  3. John Small asked question Schomburgkia, species or hybrid in category General Discussion
  4. Robert H. Findlay asked question Help with ID of this Eria sp. in category General Discussion
  5. Osura Mindula Gunasena asked question Help to Identify the Id of this Vanda in category General Discussion

New Comments

  1. Carol Holdren commented on topic "How to repot a Mattie Shave" by Pam Alexander
  2. Frank Cambas commented on member plant Zns. Cynosure var. Blue birds by Ben MG
  3. Robert H. Findlay commented on topic "Lady Bug or dangerous bug" by John Small
  4. Robert H. Findlay commented on topic "Help with ID of this Eria sp." by Robert H. Findlay
  5. Carol Holdren commented on topic "Name help" by Rae Walker
  6. Carol Holdren commented on member plant Dtps. Younghome Little Spirit by Heather A
  7. Sara D commented on member plant Den. Green Mist by Sara D
  8. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D
  9. Sara D commented on member plant Pot. Marie Yellow Bird var. Love Love by Sara D
  10. Carol Holdren commented on topic "Help to Identify the Id of this Vanda" by Osura Mindula Gunasena