AIRFLOW AND TEMPERATURE DISTRIBUTION IN GREENHOUSES WITH FAN VENTILATION
Temperature measurements have been made in greenhouses and greenhouse compartments with exhaust-fan ventilation. Temperature rise from inlet to fans is linearly related to solar radiation intensity. The experimental value differed from that calculated from theory by different amounts at different radiation levels, and it has not yet been possible to explain this. Temperature does not rise linearly between inlet and fans, and was higher at or above the top of the crop canopy than within it in a full-size house but not in a glasshouse compartment. An explanation for this contrast has not yet been found.