節能磚於節能屋之分析與應用

An Experimental Study of Energy Saving Bricks for the Building by Using Phase Change Material

葉長嘉(Chang-Chia Yeh)

指導教授 ： 陳長仁

崑山科技大學/工程學院/機械工程研究所/碩士(2011年)

摘要

台灣位於亞熱帶濕熱氣候地區，導致一般建築物室內溫度過高，建築商為了改善此情形，往往都會在建築物屋頂放置隔熱磚塊，幫助散熱，但鑒於效果不彰。本研究以相變化材料結合隔熱磚，並設計新樣式與市售隔熱磚比較其隔熱效果。
本論文方向是將一般市售隔熱磚於模擬日照測試平台做測試後，所得到之實驗結果再與電腦模擬分析之結果做比較探討，並且在研究中藉由計算熱傳遞率Ui值對隔熱磚作評估其隔熱性能。另外本研究將預期把市售隔熱效果最好的隔熱磚與新設計的隔熱磚做比較，再與其應用於節能實驗屋上。
新設計的隔熱磚概念為將隔熱磚表面製作成鋸齒狀樣式，因此太陽斜射時，在鋸齒狀一面會吸收太陽的輻射熱，另一面則因遮蔽產生陰影效果達到散熱作用，並可減少表面的受熱面積，然而在成本考量與隔熱磚結構下，再搭配少量的相變化材料與EVA隔熱材結合隔熱磚中，可有效的改變室內溫度降低且達到節能減碳之目標。

關鍵字

相變化儲能材 ； 綠建築 ； 屋頂隔熱 ； 隔熱磚

並列摘要

Taiwan is located in a subtropical region, which influence buildings and houses to increase their temperature too high, in order to reduce that effect, builders often use bricks on the roof willing to help heat insulation and dissipation, but it is not too efficient. In this study, phase change material is used in heat insulation bricks, new designs are compared with the commercial thermal insulation bricks.
The main purpose of this study is to simulate and evaluate the effect of sunlight striking commercial insulation bricks using a test platform to evaluate the samples as well as a computer simulation of the thermal behavior of the bricks, then a comparison of the experimental and simulation results. Also is studied the heat transfer properties and calculation of the Ui value for each insulation brick to evaluate their performance.
Additionally, in this study will be compared the best commercially available insulation brick with the new design, by placing them on a real application in an experimental energy-saving house. The new design of heat insulation bricks have a surface with small wall pattern, so when the sunlight strikes that side, the radiant heat form the sun will be absorbed by the small walls, this pattern also produces a shadow effect and will reduce the heated area of the brick, this design reduce the cost of production, it uses a small amount of PCM and EVA material. This design can effectively reduce the indoor temperature which can achieve energy savings and carbon reduction targets.

並列關鍵字

phase change material (PCM) ； green building ； roof insulation ； energy-saving ； building materials

參考文獻

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