侯文祥2006-07-252018-06-292006-07-252018-06-2920042004-07-31http://ntur.lib.ntu.edu.tw//handle/246246/10766台灣地區目前正被研究探討的雙層被覆溫室，雖以空氣層作阻熱設計，在夏季仍因 室內溫度過高或透光率不足等，而影響生物生產情況，是目前急待解決的問題。目前可 應用在農用雙層構造溫室的低造價被覆材料為PE 膜及PVC 浪板，而利用雙層被覆材內 空氣層部分之降溫，則尚無任何文獻。本研究利用空氣層內加入其他設施組合進行隔熱 降溫實驗，包括噴嘴加濕降溫及網材水簾降溫等兩種材料的特性，配合空氣層厚度與氣 流口開閉改變等做降溫模組設計，從74 個設計模組中找出最佳節能與隔熱降溫模式。 由熱環境降溫結果得知，在雙層PVC 浪板被覆的各模組中，以10 公分厚空氣層內置80% 透光率黑網並保持濕潤狀態，配合氣流口關閉之模組，具有最佳的降溫效果，約可使室 內溫度降低15.8℃，室內熱得率為61.5%。另外在雙層PE 膜被覆的各模組中，以空氣 層厚20 公分、氣流口開啟、使用80%透光率黑網並保持濕潤狀態之模組，具有最佳的降 溫效果約可使室內溫度降低12.3℃，室內熱得率為82.1%。從光環境需求上顯示，實驗 模組空氣層內無設施時透光率較高，以PE 膜被覆空氣層厚度10 公分、空氣層內無設施 配合氣流口開啟之模組透光率最高，可達68.6%。在不影響室內濕度狀態，以空氣層內 加入附屬設施，証明可有效達到提高室內透光率與降溫能力。It is a pressing task for solving the problem in which the biomass production decline sharply due to the overheated inner temperature in double-layer covered greenhouse during summer season in Taiwan. Up to now,the most frequent applied cover materials for double-layer greenhouses are PE film and PVC wave plank. However, reference about methods on decreasing air temperature between the double layers remains insufficient and thus needs to be fulfilled. This research is focused on air cooling between the double layers and designs modules by applying the characteristics of two materials, nozzle and meshes. After comparing data from 74 design modules,the optimal energy-saving and temperature reduction model is identified. It reveals that among various modules covered by PVC wave planks, the best way is by leaving the air layer to 10cm in which black nets of 80% transparency was stuffed inside as well as a compliance of humid condition and a closed air gap. It will reduce 15.8℃ of the temperature, and the heat absorbing rate is 61.5%. As to the modules covered by PE rubber,the best way is by leaving the air layer to 20cm in which black nets of 80% transparency was stuffed inside as well as a compliance of humid condition but an opened air gap. It will reduce 12.3℃ of the temperature, and the heat absorbing rate is 82.1%. From the requirement of lights,it shows that modules without installations have higher transparency of lights. The highest rate is about 68.6% with 10cm air layer in which no installations are assembled as well as an opened air gap.application/pdf181954 bytesapplication/pdfzh-TW國立臺灣大學生物環境系統工程學系暨研究所溫室雙層被覆隔熱降溫空氣層GreenhouseDouble-layer coverHeat separationTemperature reductionAir gapreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/10766/1/922211E002093.pdf