著者
須永 修通 小野寺 宏子 熊倉 永子 荻野 司
出版者
一般財団法人 住総研
雑誌
住総研研究論文集・実践研究報告集 (ISSN:2433801X)
巻号頁・発行日
vol.45, pp.83-94, 2019

現在,集合住宅はわが国の都市居住形態の中心をなす存在となっているが,その室内温熱環境に関する研究例は戸建住宅に比べて少なく,さらに,蒸暑地域(気候区分7,8地域)における調査例はごく僅かである。一方,筆者等の研究で東京多摩地域の集合住宅において熱中症の危険度が高いことが明らかになり,東京以西の集合住宅における危険性が危惧された。本研究では,高知,沖縄の集合住宅を対象として調査を行い,夏季冬季の室内温熱環境の実態データ(室内温湿度や居住者の意識・温熱感覚など)を得,既往研究のデータも合わせてその特徴や熱中症の危険性について明らかにした。また,各地域の気候に適した改善手法について検討・提案した。
著者
荻野 司 須永 修通 増井 周平 酒井 浩介
出版者
日本建築学会
雑誌
日本建築学会環境系論文集 (ISSN:13480685)
巻号頁・発行日
vol.81, no.729, pp.1007-1016, 2016

&nbsp;The Active Energy-saving Control System for Air-Conditioning (hereafter called "AECS-AC") was introduced to an office room where there were multiple indoor air-conditioning units and the results of verification experiments conducted in summer and winter with a focus on the thermal environment and the temperature adjustment actions of the people in the room were analysed. This system reduces deterioration of room conditioning by sensing when the occupants switch the air conditioning on and off. Ultimately, the system should satisfy the thermal comfort requests of occupants by feedback of their adjustment behaviour, rather than by collecting the occupants' attributes, thermal and comfort sensations, and psychological conditions.<br>&nbsp;The main results are as follows.<br>&nbsp;1) In summer (Jul.-Sep.), AECS-AC was conducted at a pre-set temperature of 26&deg;C in an office room with multiple indoor units, which were alternately grouped into two. After the air conditioning mode was stabilized, the mean room temperature was maintained at 26-28&deg;C irrespective of the outdoor temperature. The temperature variation at the sensor positions due to the start-stop operations of the indoor units was 1-1.5&deg;C and the room temperature variation across the office room was about 2-3&deg;C.<br>&nbsp;2) In winter (Dec.-Feb.), AECS-AC was conducted at a pre-set temperature of 22&deg;C in an office room with multiple indoor units, which were alternately grouped into two. After the air conditioning mode was stabilized, the mean room temperature was maintained at 22-25&deg;C irrespective of the outdoor temperature. The temperature variation at the sensor positions due to the start-stop operations of the indoor units was 1&deg;C and the room temperature variation across the office room was about 2&deg;C.<br>&nbsp;3) In the air-conditioning control according to the number of occupant's switching-on/off actions, the AECS-AC followed the change in the thermal environment caused by the influence of the outdoor temperature.<br>&nbsp;4) The number of manual switching-on/off actions varied from place to place in the room and differed between the perimeter side and the interior side. The occupant's preference on the thermal environment could be deduced from their air conditioner adjustment actions.<br>&nbsp;5) According to the questionnaire results in winter, almost neutral air-conditioning control could be realized for the occupants based on their answers that 60-80% were neither hot nor cold. Regarding comfort evaluation, about 50% of answers of &ldquo;comfortable&rdquo; and &ldquo;slightly comfortable&rdquo; were accounted, and it went up to about 80-90% if including the answers of &ldquo;neither of them.&rdquo;<br>&nbsp;The above results show that the AEC-AC based on the number of people's air conditioning adjustment actions realized air-conditioning control appropriately to the thermal environment of an office room with multiple air conditioners.<br>&nbsp;Furthermore, the possibility of personal-like air-conditioning realization was shown by controlling an indoor unit individually.
著者
王 美 楠 須永 修通
出版者
日本建築学会
雑誌
日本建築学会環境系論文集 (ISSN:13480685)
巻号頁・発行日
vol.82, no.734, pp.347-355, 2017
被引用文献数
3

&nbsp;Economic growth and improvements in living standards have resulted in an urgent demand for comfortable and healthy building environments, and this has led to a sharp increase in energy consumption in China. Therefore, in order to achieve a good balance between environmental quality of indoor thermal environment and energy consumption, it is crucial to identify the actual residential energy demand and its influencing factors. In this study, the annual energy demand for a typical multi-residential building in China was dynamically simulated, and the influence of building thermal performance and air-conditioning setting temperature was studied for each climate zone in China. The results show that energy saving strategies in China should be implemented accordingly in response to different climate and geographical conditions. In the severe cold and cold climate zones that require greater levels of heating in winter, air tightness of building should be considered a priority, as better air tightness can deliver a significant heating energy reduction, whereas the quality of the wall insulation is the main contributor to the indoor thermal environment in winter for all climate zones. On the other hand, in the south of China, where comfort in summer is the main concern, the improvement of external window performance and the addition of external shading are the key issues that need to be addressed. Compared with the poor effects of lowering heating temperature in the north of China, raising cooling temperature in the south is relatively effective method to save energy without causing a sharp deterioration of the indoor thermal environment. It may be realistic to reduce energy consumption and ensure the quality of indoor thermal environment in multi- residential buildings by using the appropriate climate-responsive energy-efficient measures.
著者
熊倉 永子 岩永 亮輔 須永 修通
出版者
公益社団法人 日本造園学会
雑誌
ランドスケープ研究 (ISSN:13408984)
巻号頁・発行日
vol.81, no.5, pp.649-654, 2018-03-30 (Released:2018-07-17)
参考文献数
40

Attractive buildings with green roofs and walls in urban areas are currently expected to increase in number worldwide. Although many wards in Tokyo participate in an incentive program to propagate green roofs and walls, information regarding subsidized greenery buildings, including greenery areas, types, and money spent on each building, remain unclear in many wards. In response, we conducted a questionnaire survey in each ward on the achievements and publicity activities of the incentive program in the special wards of Tokyo. The results were as follows: 1) The number of subsidized greenery buildings have declined over the past 5 years in the 17 wards, with decrease in the budget amount in 10 of those wards. 2) A comparison among the incentive programs of the city center, the sub-center, and other areas revealed that the program of the city center has promoted huge areas of greenery. 3) The ratio of budget execution of wards that have more detail condition setting for the budget amount, such as building types and soil thickness, were higher than that of the other wards. Therefore, we propose an improvement in the incentive programs in terms of increasing applications and expanding greenery areas within each ward.
著者
須永 修通
出版者
首都大学東京
雑誌
基盤研究(C)
巻号頁・発行日
2006

学校施設の環境配慮型転換を進めるには,環境配慮型施設としての目標値を設けること,また,その目標値を達成するような新たな設計基準・指針を策定することが必要である。本研究の目的は,その第一段階として,実態や効果が皆目不明なエコスクールモデル事業認定校の実態を把握し,エコスクール化のための各手法の効果や問題点を明らかにすることである。そこで,本研究では,省エネルギー型のエコスクール認定校を中心に,アンケート調査と実測調査を行い,建物の特徴やエネルギー消費量,夏期の室内環境を気候区分ごとに検討した。平成18年度までのエコスクール認定校609校のうち省エネルギー型を中心に246校にアンケート調査を行い,147校分のデータを得て解析した。また,全国の主要都市で実測調査も行った。以下に得られた知見の一部を示す。1)省エネ手法には,太陽光発電,省エネ型設備,雨水利用などが全地域において数多く採用されているが,エコスクール認定校であるにもかかわらず,校舎に断熱の無い学校が約2割あり,窓は一重ガラス,アルミサッシの学校がほとんどを占め,断熱性の向上が大きな課題であることが示された。2)エコスクールの方が一般小学校よりも,エネルギー消費が多い傾向がみられた。IV地域では,エコスクール27校の平均が540MJ/m^2,一般校3校の平均は390MJ/m^2であった。この原因として,一般校の施設水準が低いままであること,また,エコスクールはオープンスペース型であることから校舎の奥行きが深くなり照明などの設備が増加することなどが原因と考えられた。3)夏季の教室は35℃程度にもなるが,下校時に窓を閉め切ることが教室温度の高温安定を助長していることが明らかになった。また,暑さ削減対策として行われている植栽による日射遮蔽,夜間通風は効果のあることが示された。