本文針對風扇氣流(fan Airflow)的運用以及對人體工程的相互作用進行研究，針對冷風扇系統可產生之生理舒適度及心理感受等特點進行分析。其中側重於研究人對環境的感知並且提供高水平人體舒適度藉以降低耗能。本研究也對於風扇對人體舒適性的問題進行分析，發現影響風扇空氣氣流之最重要的因素跟風扇葉型相關參數有關。先前的相關研究都是針對氣流之變化，而本研究進一步對風扇氣流與人體關聯性進行量測實驗.
基於本研究的主要議題為人體的舒適性，為了方便調整風扇之設計參數，因此開發出風扇機構設計介面和程式以方便打樣並進行實測。使用實驗規劃法設計實驗以量測人體之表面溫度，並計算結果。基於風扇造型參數與風扇大小角度的限制來選定設計參數並進行最佳化。本研究也一併採用傳統熱偶線進行人體溫度量則，並與IR(紅外線顯影)所得結果進行驗證，以便後續校正以及分析兩者所得結果有何差異。因此本研究之實驗採用田口實驗規劃法來設計實驗並計算其結果。並對於ANOVA(Analysis of variance)得到的預測值間之差異進行分析，最後得到S/N值並運用CFD模擬分析新參數比對以求得最佳化的風扇設計.
本研究的配置為採用在室內的風扇氣流系統進行人體溫度量測研究。針對坐於電腦桌前面的人體所產生之熱羽流(Thermal plume)進行分析。藉由調整在人體前方的一組風扇之相關參數，對人體進行實際量測實驗，以加強風扇的對流熱傳遞效果，由於人體的熱感覺(Human thermal sensation)受到不同參數如風扇的Air velocity以及溫度分佈的影響。風扇參數的調整可產生不同的結果，因此風扇旋轉所造成的Air velocity藉由CFD模擬分析來預測並以此評估Degree of comfort的相關特性，研究結果發現風扇的不同葉型與角度參數之變化會影響空氣流動的風量與人體舒適性效果。藉由田口實驗所得到之S/N值可產生最佳風量值，而最後得到二組S/N的樣品10樣品11其最佳化設計為樣品10的風量優化，而此結果也說明風扇葉片造型的不同變化可以產生更高的空氣流動並提供最佳的人體舒適性.

In this study, the application of fan airflow was investigated and its interactions with ergonomics were studied. The aim of this study is to analyze the physical comfort and psychological perception that are generated due to the existence of a CFA system. The emphasis is on people’s perception of the environment in order to supply a higher level of human body comfort and reduce the power consumption. The influence of the airflow generated by a fan on the human body comfort was investigated as well. The critical factors that affect the airflow generated by a fan are closely correlated to the parameters that are relevant to the blade profile. Most of the earlier studies focused on the airflow phenomena while this study is to further investigate the correlation between fan airflow and a human body.
Since the main topic of this study is on the comfort of a human body, we developed a program which served as the interface of the mechanical design of a fan so that design parameters can be adjusted at convenience. Moreover, this approach makes prototyping easier so that real testing can be carried out soon after prototypes are available. The experiments in this study were designed by the experiment planning approach so that the surface temperature of a human body was measured and the results were obtained by calculation. Design parameters were determined based on the constraints of fan profile parameters, size, and various blade angles so that the blade profile can be optimized. The purpose of implementing the Taguchi method is to obtain useful statistical information by a smaller amount of experiments so that a researcher can obtain the desired data promptly and steadily. Therefore, the results obtained by the experiments were also compared with the values by ANOVA (Analysis of variance) predictions so as to understand the difference. The final goal is to obtain the S/N values and to utilize CFD simulation for analyzing new parameters in order to obtain the optimal fan design.
The configuration of this study is to use a CFA system for the measurement and analysis of human body temperature. The thermal plumes generated by a human body sitting in front of a computer desk were analyzed. By adjusting the parameters of a fan that is mounted on top of the human body and by real measurements on the human body during experiments, the convective heat transfer effects of a fan can be enhanced. It is known that the human thermal sensation is affected by various parameters such as fan speed and temperature distribution. Different results can be obtained by adjusting fan parameters. The air speed that is generated by a rotating fan can be predicted by CFD simulation so as to determine the characteristics that are relevant to the degree of comfort. The results of this study indicated that different fan profiles and the variation in angles and parameters affect the flow rate of the resulting airflow and the effects of thermal comfort for a human body. An optimal flow rate can be achieved by the S/N values obtained by the Taguchi method. Two S/N samples were obtained at the final stage of this study and they include Sample #10 and Sample #11. Among these two samples, Sample #10 was further optimized in order to achieve the optimal air flow rate. The results also indicated that the variation in the blade profile can generate a higher level of air convection and it also results in the optimal degree of comfort for a human body.

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