![]() ![]() Three ventilation modes were studied in the naturally ventilated compartment: roof openings, side openings, and a combination of roof and side openings. To explore the effects on microclimate and crop, and to determine the limits of each system, experiments were done simultaneously in two adjacent compartments of similar area and orientation in which roses were grown one naturally and the other mechanically ventilated with evaporative cooling. ![]() ![]() The known advantages and disadvantages of each system do not presently allow a clear choice. Greenhouse growers and designers are repeatedly forced to choose between installations of natural ventilation (NV) or expensive fans with evaporative cooling (FV). ![]()
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