Thermal Comfort and Energy Saving of the Air Distribution Design for a Large Space

• Main Authors: Yu-Ren Huang, 黃郁仁
• Other Authors: 蔡尤溪
• Format: Others
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/3h85hu

碩士 === 國立臺北科技大學 === 冷凍空調工程系所 === 103 === Large space environmental control design is different due to the large volume of building space and multi-layer of air space. Taipei Dome that being built was taken as the case study. Simulated of the long-range air distribution was carried out. The objectives of this study were on the impacts of air distribution on human comfort. Different designs of air distribution were studied for improvement of human comfort, and reducing the air supply so to save energy. Satisfaction of thermal comfort was evaluated by using the index of PMV. The jet flow from the air supply outlets was simulated in this study. Eight different designs of air supply were simulated for thermal comfort and energy saving. The first was to place AHU in the special area. Second and third were changing the air supply velocity of the infield and the outfield areas. Fourth and fifth were changing to round duct and infield air velocity. Sixth and seventh were changing the location of square ducts of infield and air velocity. The eighth was changing the duct and the air velocity of the outfield area. The simulation results were analyzed for temperature and velocity distribution. Influencing factors such as human metabolism and clothing thermal resistance were considered. The results show that for case (3) when infield and outfield air velocity was triple the original design, and double for the first floor reserve seats, best PMV values were obtained in the range of -1.52 to 0.03. The research found that round ducts are superior and would result in better PMV value. Moreover people in central competition area would have the best comfort while energy is saved energy due to lower air supply volume .