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Teitel, M., Agricultural Engineering Institute, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Tanny, J., Ctr. for Technol. Education Holon, P.O. Box 305, Holon 58102, Israel
The effect of the location of heating tubes in a greenhouse on the amount of heat directly radiated from a tube to the canopy is studied. A simple model is presented in which a radiative heating efficiency is defined and calculated for various tube positions and tube surface temperatures. The results show that the best tube position from a radiative point of view is near the crop at its mid-height. It is also shown that at low tube surface temperatures, the radiative heating efficiency increases sharply with the tube surface temperature. © 1998 Silsoe Research Institute.
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Radiative heat transfer from heating tubes in a greenhouse
69
Teitel, M., Agricultural Engineering Institute, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Tanny, J., Ctr. for Technol. Education Holon, P.O. Box 305, Holon 58102, Israel
Radiative heat transfer from heating tubes in a greenhouse
The effect of the location of heating tubes in a greenhouse on the amount of heat directly radiated from a tube to the canopy is studied. A simple model is presented in which a radiative heating efficiency is defined and calculated for various tube positions and tube surface temperatures. The results show that the best tube position from a radiative point of view is near the crop at its mid-height. It is also shown that at low tube surface temperatures, the radiative heating efficiency increases sharply with the tube surface temperature. © 1998 Silsoe Research Institute.
Scientific Publication
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