噴霧冷卻法應用於臺灣地區塑膠布溫室內降溫之研究

Study of Fog and Fan System for Plastic Greenhouse Cooling in Taiwan

黃裕益(Yu-I Huang)

《農業機械學刊》 8卷4期 (1999/12) Pp. 17-27

https://doi.org/10.30062/JAM.199912.0002

摘要

本文以簡易錏管塑膠布溫室為試驗對象，在其內部裝置固定微霧噴頭，應用高壓噴霧及強制通風的降溫系統，直接於試驗溫室內部進行蒸發冷卻。文中，根據噴頭噴出微霧蒸發比例之數學模式及溫室內質能平衡的關係，設計試驗溫室內所需要的高壓噴頭數目後，實際量測不同外界氣候條件下，試驗溫室內氣象因子之變化情況，探討於本省的氣候環境下，利用高壓噴霧蒸發冷卻的方式，可達到溫室內部降溫之程度，及對出入風口間溫度梯度改善的效果，期能提供國內業者作為使用噴霧冷卻方式之參考。結果顯示利用噴霧冷卻法可將溫室內空氣溫度降至低於外氣溫度2~4℃，並可減緩強制通風下溫室進風口及出風口前後兩側所形成的溫度梯度現象。

關鍵字

溫室 ； 蒸發冷卻 ； 噴霧冷卻法

並列摘要

Plastic greenhouse with forced ventilation and fixed fine fogging nozzles was studied for evaporative cooling effect. The required number of nozzles was calculated according to mathematical model of fine evaporative efficiency at nozzle exhaust and the heat balance equation inside the plastic greenhouse. Further more, the variations of environmental parameters with different climate conditions were measured for studying the cooling effect and the reduction of temperature gradient in the plastic greenhouse. Experimental results indicated that the above method can reduce the temperature in the plastic greenhouse to 2~4℃ below outdoor temperature and the temperature gradient in plastic greenhouse with forced ventilation system can be decreased.

並列關鍵字

Greenhouse ； Evaporative Cooling ； Fog and Fan System