本省溫室降溫效果之探討

Studies on Cooling Effect of Greenhouse in Taiwan

自78年6月6日至78年6月28日以計測儀器測量全省具有代表性溫室12棟之暑熱環境之結果知：（1）以自然通風方式換氣之溫室中以大林糖廠的蘭花溫室、嘉義農試分所的不鏽鋼網柑橘育苗溫室及進利蘭園的齒狀溫室的植物生長環境之溫度等於或低於外氣溫。（2）強制通風扇裝置位置不當或溫室之氣密性不良，全都無顯著降溫效果。（3）利用水蒸發之冷卻力以降溫，除加濕冷卻外，pad-and-fan由於設計欠當其效果亦不佳。（4）架遮光網於室外比室內更可使室內溫度降低。

Of 12 characteristic greenhouses being measured for their hot environment condition from June 6 to June 28, 1989, some results were obtained as following: (1) Greenhouse with natural ventilation systems such as the steep-type greenhouses of Ta-Lin sugar factory, the totally-netted greenhouses of Chia-Yih Agricultural Research Institute, and the shead-type greenhouses of Tsin-Li Orchid Garden, whose plant growth temperatures are equal to or lower than that of outside. (2) Improper fan location in forced ventilation systems or in bad airtight-greenhouses have no any significant effects on temperature dcreasing. (3) Due to improper design in pad-and-fan cooling systems, the performances in temperature decreasing were all disadvantages. Cooling by humidification of moist air has good effects on temperature decreasing. (4) Greenhouses with outside shade screen and with lantern-type inside-shad screen have good performances in temperature decreasing.