HOME    About this site    mypage    Japanese    library    university    Feedback

University of the Ryukyus Repository >
Faculty of Engineering >
Research Report (Faculty of Engineering) >

 
Title :亜熱帯沖縄の生活と気候に適合する真の環境共生健康住宅に関する研究
Title alternative :Study on actual environmental conscious and healthy houses fit for climate and living environment in subtropical Okinawa
Authors :堤, 純一郎
安藤, 徹哉
Authors alternative :Tsutsumi, Junichiro
Ando, Tetsuya
Issue Date :Jun-2007
Abstract :平成16年度~平成18年度科学研究費補助金(基盤研究(B))研究成果報告書
研究概要:研究期間の3年間に6つのテーマで研究を行った。まず、亜熱帯島嶼地域の沖縄における伝統的な木造住宅から最近のパッシブクーリング住宅まで、歴史的な変遷を考慮した6棟の戸建住宅における熱環境の実測調査または既存データの解析を行い、住宅の熱環境に関する変化について考察した。次に、低緯度における最大熱負荷要因となる屋上面の遮熱、断熱に対する対策として、RCスラブと亜鉛鉄板屋根を対象に、屋上植栽、セラミックタイル、ペイントなどの6種類の屋上被覆材料の熱的効果に関する屋外実験を行った。屋上植栽の熱的効果が最も高く、セラミックタイルはそれに準じる。市販の断熱ペイントの遮熱性能も確認できた。さらに、沖縄県産の素材を用いた3種類の外装仕上げ材料を実験用の小型RC住宅の西壁と北壁に塗り、これらの遮熱及び断熱性能の評価を行った。単純な塗り壁仕様の仕上げ材料であるが、これがある程度外断熱的な働きをすることが明らかになった。以降は建物を取り巻く屋外環境に関する研究である。まず、伝統的な町並みの代表として首里金城町の石畳の道とアスファルト舗装の熱環境を比較測定した。日中ばかりでなく夜間も石畳の表面温度は常にアスファルトよりも低いことが明らかになった。また、沖縄の伝統的屋敷囲いであるフクギの防風林に関する、詳細な調査を本部町において行った。現存するフクギ林だけでなく、歴史的な変遷に関する調査も行った結果、フクギ林の生活環境に与える効果を肯定する住民の意見と、RC造住宅に替わってから徐々にフクギ林が減っている現実を明らかにした。次に、都市の熱環境を調整要素としての重要な働きが期待される樹木そのものの熱環境に関する実測調査を行った。琉球大学構内において8種類の樹木の熱環境測定を行い、樹種による熱的効果の違いを明らかにした。さらに、天空における樹冠の形態係数を用いて、街路樹が日陰を作る効果を定量化した。
要約(欧文):This study consists of 6 topics, and they were carried out in this three years. The first topic is about historical changes of thermal environment in dwelling houses in subtropical Okinawa. Representative 6 houses from traditional wooden structure to advanced passive cooling system were selected to measure the indoor climate or to analyze measured data to consider the change of the indoor thermal conditions. The second topic is solar protection and heat insulation on rooftop that is a largest cooling load part in low latitude zone. 6 materials that include rooftop garden, ceramic tiles and heat insulation paint for RC slab and galvanized iron sheet roof were set on a real rooftop and measured their thermal performances. Thermal performance of rooftop garden is best and followed by ceramic tiles. Solar protection by the paint is also confirmed. The third topic is about thermal performance of finish mortars on the outside of walls that are made from local materials originate in Okinawa. 3 types of the finish mortars were plastered on the west and the north wall of an RC small model house. The results show that they can work as outside insulation though they were just plastered. The latter 3 topics are about outdoor environment surrounding houses. The fourth topic is thermal characteristics of a traditional stone pavement. Old lanes paved by natural limestone are left in Shuri-Kinjo area and one of the lanes is selected as a traditional pavement. Comparative measurement of thermal environments on the stone pavement and on asphalt pavement near the stone pavement was conducted. Surface temperature on the stone pavement is lower than that on the asphalt pavement not only in the daytime but in the nighttime. The fifth topic is about traditional arboreal hedges surrounding houses. Fukugi (Garcinia subelliptina) is a representative tree for the hedge against salty wind in Okinawa. Detailed survey on the old Fukugi hedges were done in Bise area of Motobu town. The survey included the present conditions of old Fukugi hedges and historical changes of them. The residents have an opinion that effects of Fukugi hedges on living environment are good, however when the houses changed from wooden material to RC structure, the Fukugi hedges were cut down and reducing now. The last topic is thermal performance of trees, especially roads de trees. The differences of thermal performance between 8 species of trees were measured in the campus of University of the Ryukyus. The density of leaves have major effect on the temperature in the tree crown. Shading effect by tree crown was quantified by the shape factor in the sky.
Type Local :研究報告書
Publisher :堤純一郎
URI :http://hdl.handle.net/20.500.12000/14169
Appears in Collections:Research Report (Faculty of Engineering)

Files in This Item:

File Description SizeFormat
16360293-1.pdf表紙,はしがき1756KbAdobe PDFView/Open
16360293-2.pdf第1章5563KbAdobe PDFView/Open
16360293-3.pdf第2章11477KbAdobe PDFView/Open
16360293-4.pdf第3章9819KbAdobe PDFView/Open
16360293-5.pdf第4章13502KbAdobe PDFView/Open
16360293-6.pdf第5章,第6章,第7章14555KbAdobe PDFView/Open