辦公室為日常生活中最密集進行專業職責的場所，辦公室工作者長時間待在室內空間內，因此室內熱舒適度逐漸受到重視，老舊辦公空間通常建造於較早期，透過本研究調查，天花板高度為2.4公尺~2.6公尺之老舊辦公空間占比38%，而辦公建築經常使用中央空調，中央空調系統送出的氣流為恆定的溫度和濕度，但每個人員的室內舒適感受度並不一樣，各個辦公空間也會因為室內裝修而有不同的天花板高度，因此使用合適的末段送風設備是使室內舒適度提高不可或缺的關鍵因素，此外，因為天花板高度較低，常見老舊辦公室的天花板至使用者坐姿時頭頂距離僅約1.2公尺，導致空調直接吹至人體形成風擊現象。因此，本研究主要探討空調出風口設計-風速與距離及舒適度之研究，經由調查市售出風口及末端送風設備開發，設計不同的末端送風設備組合，以三大變因：接頭方向、靜壓箱高度及出風面樣式，組合出40種末端送風設備，並評估其風速、均勻性與出風效率，依據實測結果分析各項變因對於其性能之影響。研究結果發現若要降低出風面平均風速，可以使用側接頭靜壓箱搭配高度較高(建議20公分)的靜壓箱，並改變出風面樣式(建議密圓孔) ；若要提高出風面均勻度，可以選擇側接頭靜壓箱並改變出風面樣式(建議九圓孔與十六圓孔)；若要提高出風效率，可以選擇上接頭靜壓箱並改變出風面樣式(建議十六圓孔)。此外，對於無法改變既有的條件，只能改變空調出風口設計來改善情況的不良辦公空間的情況下，建議使用側接頭搭配20公分靜壓箱及TYPE1九圓孔之出風口與側接頭搭配10公分靜壓箱及TYPE1九圓孔之出風口，此兩款出風口出風面不均勻系數均小於1.02，出風效率高，且頭頂風速介於舒適範圍0.3m/s~0.5m/s間。而在多人會議室方面，建議使用側接頭配20公分靜壓箱及TYPE2十六圓孔之出風口，其出風面不均勻系數為1.00，出風效率高，頭頂風速介於舒適範圍0.3m/s~0.5m/s間外，且頭頂風速大於前兩者，因此適用。

Office workers stay in the indoor space for a long time, the indoor thermal comfort is gradually being emphasized, through the investigation of this study, the ceiling height of 2.4 meters ~ 2.6 meters of the old office space accounted for 38%, the central air conditioning system sends out airflow for a constant temperature and humidity, but each person's indoor comfort is not the same, and the ceiling height of the various office spaces will be different due to the interior decorations. Each office space also has different ceiling heights due to the interior decoration, so the use of appropriate air outlets is a key factor in improving indoor comfort. In addition, because of the low ceiling height, it is common that the distance from the ceiling to the top of the head of the user is only about 1.2 meters in old offices, which leads to the phenomenon of windshock caused by air conditioning blowing directly onto the human body. Therefore, this study focuses on the design of air-conditioning outlets - wind speed, distance and comfort.
After investigating the marketed air vents and the development of homemade air vents, different air vents were designed, and 40 types of air vents were combined with three main variables: the direction of the header, the height of the plenum box, and the style of the air surface. The air velocity, uniformity, and efficiency of the air vents were evaluated, and the effects of each variable on their performance were analyzed based on the results of the actual test. The results of the study show that to reduce the head wind speed and the average wind speed on the air outlet surface, it is possible to use a side connector plenum box with a plenum box of higher height and to change the air outlet surface pattern. To improve uniformity, choose a side-connector plenum box and change the airflow pattern. To improve efficiency, choose a top-connected plenum box and change the airflow pattern.

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