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35°C). Whereas, the evaporative cooling using mist system kept the greenhouse air temperature above the set point temperature by an average of 4.9°C. Therefore, the internal air temperature stayed 4.2°C below outside. Due to the short length of the greenhouse (8 m), small temperature gradients (2.9°C) were observed from wet pads to extracting fan. The cooling system using fan-pad system inside the greenhouse (G2) was on the average more efficient than the misting system inside the greenhouse (G1) by 22.5% due to the cooling operation period for the greenhouse (2) was longer than that for the greenhouse (1), accordingly, the water temperature of cooling system (2) was lower than that in misting system (G1). The total fresh yield of cucumber crop per square meter for greenhouse (G1) and greenhouse (G2) was 3.805 and 5.491 kg/m2, respectively. Therefore, the greenhouse (G2) produced 1.686 kg /m2 (44.31%) more than the greenhouse (G1).]]>
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