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Radiative Heat Transfer from Heating Tubes in a Greenhouse

✍ Scribed by Meir Teitel; Josef Tanny

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
250 KB
Volume
69
Category
Article
ISSN
0021-8634

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✦ Synopsis

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.

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