開窗形式與水平遮陽版對室內採光效能與遮蔽效能之研究 -以大台中地區大學圖書閱覽空間為例-

The efficacy research on window opening and horizontal shading plates and indoor daylighting performance -A case study on a reading lobby in a university in Central Taiwan-

張俊修(Chun-Hsiu Chang)

指導教授 ： 郭章淵

朝陽科技大學/設計學院/建築及都市設計研究所碩士在職專班/碩士(2011年)

摘要

本研究針對「圖書閱覽空間」自然採光現況，調查建築物遮陽形式、開口大小、室內反射率等，藉由田野調查（Field Research）方式實際了解圖書館閱覽空間之現況，對採光效能可能產生之影響因素做一實地勘查與紀錄，透過現地直接觀察以獲取第一手原始資料，並整合文獻中之因子，以做為後續實驗因子之選擇；採光效能方面利用縮尺模型在天空圓頂實驗室（Sky Dome）以探討在漫射光環境下，不同的開口型式及水平遮陽板對室內晝光率之影響；遮蔽效能方面則以Ecotect電腦模擬程式探討在直射光環境下，不同的開口型式及水平遮陽板對室內直射光分布於地板面積百分比之影響。
田野調查成果顯示樣本之開口率最小為10.5 %、最大開口為96.6%，開口率介於55%~65%出現次數最多；開窗高寬比最小為0.3：1、最大為2：1，大多數高寬比介於0.4~1.5之間；遮陽板出挑與開窗高度比值最小為0.2、最大比值為2。採光效能實驗結果方面，開窗高寬比與採光效能成正比、出挑比與採光效能成反比、無論有無遮陽板時開窗率均與採光效能成正比。遮蔽效能結果方面，開窗率與遮蔽效能成反比、開窗高寬比、出挑比與遮蔽效能成正比、遮陽板固定比例時開窗高寬比與遮蔽效能成反比，研究結果顯示閱覽空間能夠有效利用太陽光的位置為靠窗1.5m~3.5m的位置。本研究建議閱覽空間開口率設計應介於55%~65%、開口高寬比應介於0.4~1.5，遮陽板出挑比介於0.2~0.8間。

關鍵字

遮蔽效能 ； 採光效能

並列摘要

This research targets on analysis how natural daylighting in “reading lobby of a library”would counteract with building shading style, size of opening, indoor infraction rate. A“Field Research”was conducted in this research for exploring current performance and efficacy of daylighting in a reading lobby in a library and making an on-site investigation and records in terms of how daylighting performance would counteract with (the building). The on-site observation provided original and raw data and some factors found from reference documents were consolidated for subsequent selection and database collection of experimental factors. A scale model was also adopted in this research for analyzing how different sizes of openings and horizontal shading plated would counteract with indoor daylighting performance in a Sky Dome; and also using a computer simulation softwar “Ecotect” for exploring how different sizes of openings and horizontal shading plates would counteract with the indoor shading performance.

The field study adopted in this research demonstrated that the smallest sampling opening rate is 10.5%, biggest sampling opening rate is 96.6%, with opening rates ranging between 55%~65% the most frequently; The smallest window height-width scaling ratio is 0.3：1, and the biggest is 2:1, with most ranging between 0.4~1.5. The relative value between shading plate overhanging ratio and window height scaling create a positively counteracting relationship ranging from the minimum value of 0.2 to the maximum value of 2. The daylighting performance experimental results indicate that window opening height-width scaling ratio counteracts positively with daylighting performance, but the overhanging ratio counteracts negatively with shading performance, and window opening rates always counteract positively with daylighting performance regardless of adopting shading plates or not. In terms of shading performance, window opening rates counteract negatively with shading performance, and the window height-width scaling, overhanging scale counteract positively with shading performance and the duration of fixation of shading plate counteracts negatively with window height-width scaling and shading performance. The research results demonstrate that the space arrangement with a distance of 1.5m~3.5m to the windows can enjoy effective daylighting performance within the reading lobby. It is thus suggested in this research that the window opening rate within the reading lobby shall be 55%~65%, and opening height-width scaling shall be between 0.4~1.5 and shading plate overhanging scaling shall be between 0.2~0.8.

並列關鍵字

Study of horizontal shading ； Daylighting Performance

參考文獻

28.謝東育，2009，"中庭採光效能預測模式之研究"，碩士論文，朝陽科技大學建築及都市設計研究所。

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