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薄層綠屋頂表土覆蓋材料孔隙熱行為之研究 = A Study on the...

國立高雄大學都市發展與建築研究所

薄層綠屋頂表土覆蓋材料孔隙熱行為之研究 = A Study on the Thermal Behavior of Porous Cover Materials atop an Extensive Green Roof

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	A Study on the Thermal Behavior of Porous Cover Materials atop an Extensive Green Roof
作者:	施怡如,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2011[民100]
面頁冊數:	1冊圖，表 : 30公分;
標題:	薄層綠屋頂
標題:	Extensive Green Roof
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/29672459181375613509
附註:	含參考書目
摘要註:	由於地球暖化問題對人與環境的負面影響，都市降溫與建築節能已成為各國必須共同面對和努力的重要目標。屋頂綠化因而也成為落實上述降溫與節能目標的減碳對策之一。在促成降溫與節能實質效益部分，薄層綠屋頂的土壤層與其土表覆蓋物擔負相當重要角色。常見的土表覆蓋物包括植被或輕質孔隙類材料。這種輕質的孔隙類材料也可做為綠屋頂土壤層的替代物，其降溫效果與應用潛力的探討是本研究的主要動機。本研究已分別在冬季與夏季期間，運用局部空間模型，對陶粒、碎木片、小碎石(彩繪石及白雲石)等不同類別的孔隙材料，完成在實際環境中的溫度量測實驗。經由對在這些材料孔隙內溫度數據的綜合分析及比較，主要的研究成果摘述如下： 1. 孔隙材料下方土表溫度，在夏季白天，低於氣溫的最大溫差為3~4℃；低於裸露表土溫度的最大溫差是11~13℃。在夏季夜晚，高於氣溫的最大溫差約為5℃；高於裸露表土溫度的最大溫差約為6℃。若屋頂構造的隔熱不佳，夜間的較高溫度可能經由熱傳導而提高室內溫度。 2. 在冬季白天，孔隙材料下方土表溫度低於氣溫之最大溫差可達11℃；在冬季夜晚，高於氣溫的最大溫差達4.45℃。但孔隙材料下方土表溫度受氣溫影響較小。 3. 孔隙材料的夏季熱時滯約5~7小時。遲滯時數的多寡依序為：碎木片>陶粒>白雲石。 4. 在材料近外表層孔隙內的溫度，與下方土表的最大溫差，在夏季高達17℃；在冬季也能高達24℃。這種熱陷阱在夏季午後逐漸釋出的內部蓄積熱量，可能影響其周圍屋頂空間使用時的熱舒適或夏季夜晚的都市熱島現象。 5. 孔隙類材料的覆蓋厚度必須是5~10cm才有降溫效果。若超過20cm，其效果並不會因其覆蓋厚度的增加而明顯提升。綜言之，本文的逐時實驗數據與相關分析結果已能充分說明三種類型孔隙材料的降溫效果，特別是在亞熱帶氣候區的高雄市。研究成果也有助於建築或景觀設計人員進行綠屋頂低碳節能的設計實務。 Caused by the negative impact of global warming on people and the environment, urban cooling strategies and building energy savings become important goals that all countries need to face and strive for. Roof greening turn into a key carbon reduction measure for achieving the objectives mentioned above. As for the actual efficiency from the cooling and energy conservation, the soil layer and its surface covering of an extensive green roof play a quite important role. The common topsoil covering includes vegetation or lightweight porous material. This kind of porous material can be used as a substitute for the soil layer of green roof, and exploring its cooling effect and application potential are the motive of this research. The study has completed the temperature measurements in actual environment to different porous materials such as ceramic particles, wood scraps and pebbles (colorful pebble and dolomite) by using space limited model in summer and winter. Based on the comprehensive analysis and comparison of temperature data in test material, the key findings are as follows: 1. The topsoil temperature beneath a porous material, at daytime in summer, is less than the air temperature by the maximum temperature difference of 3~4 ℃, and less than the bare topsoil temperature by the greatest temperature difference of 11~13 ℃. At night in summer, it is higher than the air temperature by the highest temperature difference of about 5 ℃, and higher than the bare topsoil temperature by the maximum temperature difference of about 6 ℃. If the thermal insulation of rooftop is not good, such a higher temperature at night may increase the indoor temperature due to heat conduction. 2. At daytime in winter, the topsoil temperature under a porous material is less than the air temperature by the maximum temperature difference of 11 ℃, and higher than the air temperature by the highest temperature difference of 4.45 ℃. But the topsoil temperature below a porous material is slightly affected by air temperature. 3. The time lag of various porous material in summer is about 5~7hours. The order of the hours of time lag is as follows: wood scraps>ceramic particles>dolomite. 4. The maximum temperature difference between the pore temperature close to the exterior surface and the topsoil surface reaches 17 ℃ in summer and 24 ℃ in winter. This kind of heat trap gradually releases its stored heat in summer afternoon, which may influence the thermal comfort of using surrounding roof spaces or urban heat island phenomenon at summer night. 5. The cover thickness of a porous material must reach 5~10cm to create the cooling effect. If more than 20cm, such an effect will not be increased obviously with the added thickness of covering. In a word, the hourly experimental data and related analysis results of the research can sufficiently explain the cooling effect of the three porous materials, especially in Kaohsiung city within a subtropical climate zone. The findings are also good for architects or landscape designers to perform the green roof design for low carbon emission and energy conservation.

薄層綠屋頂表土覆蓋材料孔隙熱行為之研究 = A Study on the Thermal Behavior of Porous Cover Materials atop an Extensive Green Roof
施, 怡如

薄層綠屋頂表土覆蓋材料孔隙熱行為之研究 = A Study on the Thermal Behavior of Porous Cover Materials atop an Extensive Green Roof / 施怡如撰 - [高雄市] : 撰者, 2011[民100]. - 1冊 ; 圖，表 ; 30公分.
含參考書目.
薄層綠屋頂Extensive Green Roof

薄層綠屋頂表土覆蓋材料孔隙熱行為之研究 = A Study on the Thermal Behavior of Porous Cover Materials atop an Extensive Green Roof
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330 $a 由於地球暖化問題對人與環境的負面影響，都市降溫與建築節能已成為各國必須共同面對和努力的重要目標。屋頂綠化因而也成為落實上述降溫與節能目標的減碳對策之一。在促成降溫與節能實質效益部分，薄層綠屋頂的土壤層與其土表覆蓋物擔負相當重要角色。常見的土表覆蓋物包括植被或輕質孔隙類材料。這種輕質的孔隙類材料也可做為綠屋頂土壤層的替代物，其降溫效果與應用潛力的探討是本研究的主要動機。本研究已分別在冬季與夏季期間，運用局部空間模型，對陶粒、碎木片、小碎石(彩繪石及白雲石)等不同類別的孔隙材料，完成在實際環境中的溫度量測實驗。經由對在這些材料孔隙內溫度數據的綜合分析及比較，主要的研究成果摘述如下： 1. 孔隙材料下方土表溫度，在夏季白天，低於氣溫的最大溫差為3~4℃；低於裸露表土溫度的最大溫差是11~13℃。在夏季夜晚，高於氣溫的最大溫差約為5℃；高於裸露表土溫度的最大溫差約為6℃。若屋頂構造的隔熱不佳，夜間的較高溫度可能經由熱傳導而提高室內溫度。 2. 在冬季白天，孔隙材料下方土表溫度低於氣溫之最大溫差可達11℃；在冬季夜晚，高於氣溫的最大溫差達4.45℃。但孔隙材料下方土表溫度受氣溫影響較小。 3. 孔隙材料的夏季熱時滯約5~7小時。遲滯時數的多寡依序為：碎木片>陶粒>白雲石。 4. 在材料近外表層孔隙內的溫度，與下方土表的最大溫差，在夏季高達17℃；在冬季也能高達24℃。這種熱陷阱在夏季午後逐漸釋出的內部蓄積熱量，可能影響其周圍屋頂空間使用時的熱舒適或夏季夜晚的都市熱島現象。 5. 孔隙類材料的覆蓋厚度必須是5~10cm才有降溫效果。若超過20cm，其效果並不會因其覆蓋厚度的增加而明顯提升。綜言之，本文的逐時實驗數據與相關分析結果已能充分說明三種類型孔隙材料的降溫效果，特別是在亞熱帶氣候區的高雄市。研究成果也有助於建築或景觀設計人員進行綠屋頂低碳節能的設計實務。 Caused by the negative impact of global warming on people and the environment, urban cooling strategies and building energy savings become important goals that all countries need to face and strive for. Roof greening turn into a key carbon reduction measure for achieving the objectives mentioned above. As for the actual efficiency from the cooling and energy conservation, the soil layer and its surface covering of an extensive green roof play a quite important role. The common topsoil covering includes vegetation or lightweight porous material. This kind of porous material can be used as a substitute for the soil layer of green roof, and exploring its cooling effect and application potential are the motive of this research. The study has completed the temperature measurements in actual environment to different porous materials such as ceramic particles, wood scraps and pebbles (colorful pebble and dolomite) by using space limited model in summer and winter. Based on the comprehensive analysis and comparison of temperature data in test material, the key findings are as follows: 1. The topsoil temperature beneath a porous material, at daytime in summer, is less than the air temperature by the maximum temperature difference of 3~4 ℃, and less than the bare topsoil temperature by the greatest temperature difference of 11~13 ℃. At night in summer, it is higher than the air temperature by the highest temperature difference of about 5 ℃, and higher than the bare topsoil temperature by the maximum temperature difference of about 6 ℃. If the thermal insulation of rooftop is not good, such a higher temperature at night may increase the indoor temperature due to heat conduction. 2. At daytime in winter, the topsoil temperature under a porous material is less than the air temperature by the maximum temperature difference of 11 ℃, and higher than the air temperature by the highest temperature difference of 4.45 ℃. But the topsoil temperature below a porous material is slightly affected by air temperature. 3. The time lag of various porous material in summer is about 5~7hours. The order of the hours of time lag is as follows: wood scraps>ceramic particles>dolomite. 4. The maximum temperature difference between the pore temperature close to the exterior surface and the topsoil surface reaches 17 ℃ in summer and 24 ℃ in winter. This kind of heat trap gradually releases its stored heat in summer afternoon, which may influence the thermal comfort of using surrounding roof spaces or urban heat island phenomenon at summer night. 5. The cover thickness of a porous material must reach 5~10cm to create the cooling effect. If more than 20cm, such an effect will not be increased obviously with the added thickness of covering. In a word, the hourly experimental data and related analysis results of the research can sufficiently explain the cooling effect of the three porous materials, especially in Kaohsiung city within a subtropical climate zone. The findings are also good for architects or landscape designers to perform the green roof design for low carbon emission and energy conservation.
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