Open-roof Greenhouse Design with Heated Ebb and Flood Floor
2001
An open-roof greenhouse production system with a heated ebb and flood floor
irrigation system is being developed and evaluated. In addition to continuous roof vents, the
greenhouse is equipped with sidewall vents to allow for ventilation during windy and rainy
conditions. This paper discusses the design details as well as the instrumentation used for the
evaluation. Preliminary data, collected over a 2.5-month period, of light and temperature
conditions are presented. The greenhouse temperature closely followed outside temperature
conditions for the entire measurement period when the inside temperature exceeded the set
point. The inside light conditions were significantly affected by the greenhouse structure, and
inside light intensities around solar noon could exceed outside light intensities due to reflection
from the opened roof segments.
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