著者
多和田 友美 伊香賀 俊治 村上 周三 内田 匠子 上田 悠
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.75, no.648, pp.213-219, 2010-02-28 (Released:2010-06-07)
参考文献数
18
被引用文献数
6 5

Various researches highlight that indoor air quality affects performance of workers in offices. Although good indoor air quality improves work performance, it also increases energy consumption. In this study, we achieved a field survey in a real office in order to investigate the relationship between thermal environment, productivity, and energy consumption. In addition to the monitoring of indoor environmental quality and energy consumption, subjective experiments were conducted. In order to evaluate subjective performance, workers and students responded to questionnaires, and to evaluate objective performance, students simulated three types of office works. By calculating room temperature and worker's subjective performance, we demonstrate the correlation between room temperature and worker's performance (R2=0.22, p
著者
柳井 悠希 伊香賀 俊治 川久保 俊
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.77, no.676, pp.533-539, 2012-06-30 (Released:2012-07-27)
参考文献数
29
被引用文献数
1

In order to clarify the effect of classroom environmental quality on students' health and learning performance, field measurements, assessments using CASBEE-School (Comprehensive Assessment System for Built Environment Efficiency for school), and questionnaire survey for students and their teachers were conducted in 12 elementary schools. From the results of the survey conducted in both summer and winter, a significant correlation was observed between score for Q1 (indoor environment) category of CASBEE-School and students' satisfaction with their classroom in each school, and effectiveness of assessments by CASBEE-School was validated. However, there is still room for further improvement of assessment system in detail. In addition, a significant correlation between students' satisfaction and both of physical conditions and concentration was observed in this study.
著者
川久保 俊 伊香賀 俊治 村上 周三 星 旦二 安藤 真太朗
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.79, no.700, pp.555-561, 2014-06-30 (Released:2014-07-15)
参考文献数
32
被引用文献数
9 2

Previous studies have revealed relationships between specific residential environmental factors and residents' health status. However, no previous study has considered the comprehensive health risk due to overall residential environment. Therefore, a large-scale nationwide questionnaire survey was conducted using CASBEE Health Checklist to examine the residential environment of detached houses and residents' health status. Results show that overall residential environment was likely an important determinant of health and was associated with disease prevalence among residents.
著者
本多 英里 伊香賀 俊治 大平 昇 岡島 慶治 海塩 渉
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.724, pp.523-533, 2016 (Released:2016-06-30)
参考文献数
61
被引用文献数
3 1

Decline in the quality of sleep increases the morbidity and risk of lifestyle diseases. In addition, daytime sleepiness causes traffic accidents and decreased work efficiency. According to a survey conducted by the Japanese Ministry of Health, Labour and Welfare, 20% of people experience sleep problems, and decline in sleep quality in particular is serious. One factor that has been linked to decline in sleep quality is high heat and humidity in summer. Against this background, some studies have examined the effects of thermal environment control on sleep. Appropriate use of air conditioning has been shown to improve sleep quality; however, maintaining a good indoor thermal environment using air conditioning increases energy consumption. Given the present state of climate change, the reduction of energy consumption in the Japanese residential sector is a pressing issue. However, an excessive reduction in air conditioning use for the purpose of saving energy could create a poor sleep environment. The effects of thermal environment control using air conditioning on sleep quality and energy consumption have been independently investigated in several previous studies. In this research, we elucidate the impact of thermal environment control on both sleep and energy consumption during the summer. The effect of thermal environment control on sleep and energy saving was unified as a monetary value. Increase in energy consumption can be estimated as an increase in air conditioning costs. Conversely, because reduced sleep efficiency translates to reduced working efficiency, improved sleep efficiency was converted into monetary value as a reduction in wages. Eight healthy male university students participated in this study. The study was performed in a two-story maisonette room in an apartment building with high environmental performance. Experiments were conducted in August 2013 and 2014. In the 2013 experiments, we examined the effect of thermal environment control on sleep and energy consumption. Three thermal environmental control scenarios were used: an air conditioner set at continuous operation at 26.0 °C (Case I); an air conditioner set at continuous operation at 28.0 °C (Case II); and natural draft only (Case III). The increase in air conditioner temperature setting from 26.0 to 28.0 °C used in this study resulted in a 0.03 kWh/day/m2 reduction in 8-h energy consumption (Fig. 6). Sleep efficiency was significantly higher for Case II (average SET* during sleep, 27.4 °C) (Fig. 8). Low SET* caused by excessive air conditioner use and high SET* caused by not using an air conditioner adversely affected sleep efficiency. The relationship between sleep efficiency and work efficiency was verified in the experiments conducted in August 2014, confirming that the economic impact of decreased sleep efficiency could be converted to a monetary value. Working efficiency decreased by 1.1% per 1% decrease in sleep efficiency (p<0.01) (Fig. 13). The combined economic impact of energy saving and sleep quality was calculated. The economic impact of improved sleep quality was much greater than that of energy saving, and the economic value of Case II (average SET* during sleep, 27.4 °C) was the highest (Fig. 14). This study found that sleep quality influences work efficiency, demonstrating the importance of improving sleep. To create a comfortable sleeping environment, further verification of thermal environment control in more detail is necessary.
著者
川久保 俊 伊香賀 俊治 村上 周三 新谷 圭右
出版者
日本LCA学会
雑誌
日本LCA学会研究発表会講演要旨集
巻号頁・発行日
vol.2007, pp.118-118, 2007

近年中山間地域において環境負荷の増大、少子高齢化に伴う財政状況の悪化、コミュニティの脆弱化といった諸問題が急速に進展しており、多くの集落が存続危機の状態にあると指摘されている。そこで本研究では、地域の持続可能性を環境/経済/社会の側面から評価・予測することを目的とし、環境工学、計量経済学、社会科学に基づいた持続可能性評価モデルを構築した。そして、モデル地域において実際に持続可能性の評価を行った。
著者
伊香賀 俊治 江口 里佳 村上 周三 岩前 篤 星 旦二 水石 仁 川久保 俊 奥村 公美
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.76, no.666, pp.735-740, 2011-08-30 (Released:2012-01-13)
参考文献数
23
被引用文献数
3 10 7

It takes many years to recover the initial investment cost for installing housing insulation through savings from energy reduction (Energy Benefit: EB), since construction cost is very high in Japan. This long payback time is the major barrier to the promotion of well-insulated houses. However, it has been found that if Non-Energy Benefits (NEB) of well insulated houses, such as improvement in personal health, reduction of medical expenses and decline in absences from work are all taken into account, the time required to recover the initial investment cost would change from 29 to 16 years. Therefore recognition of NEB is expected to encourage residents to invest in residential thermal insulation. NEB of well-insulated houses is thus evaluated regarding human health in this study.
著者
佐藤 正章 村上 周三 高井 啓明 伊香賀 俊治 半澤 久 柳井 崇 遠藤 純子 吉澤 伸記
出版者
一般社団法人日本建築学会
雑誌
日本建築学会技術報告集 (ISSN:13419463)
巻号頁・発行日
no.23, pp.259-264, 2006-06-20
被引用文献数
1

We have developed assessment systems for buildings known as CASBEE (Comprehensive Assessment System for Building Environmental Efficiency). CASBEE for new construction and that for existing building were already developed and reported in former reports. We have newly developed the assessment system for renovation. Then we would report the outline of it.
著者
岡崎 愛 伊香賀 俊治 平田 潤一郎 西村 三香子
出版者
公益社団法人 空気調和・衛生工学会
雑誌
空気調和・衛生工学会大会 学術講演論文集 平成29年度大会(高知)学術講演論文集 第6巻 温熱環境評価 編 (ISSN:18803806)
巻号頁・発行日
pp.21-24, 2017 (Released:2018-10-20)

執務者の知的生産性向上は多大な経済効果をもたらし、室内温熱環境は知的生産性に大きな影響を与えると指摘されている。また、床近傍の低温環境が温熱不満や皮膚温低下に繋がることから、床近傍室温が冷えを介して知的生産性に及ぼす影響の検証を目的とし、被験者実験を行った。床近傍の低温環境は、足元の皮膚音低下、不快感を伴う冷えを生じさせ、知的生産性を低下させる可能性が示された。
著者
伊香賀 俊治 満倉 靖恵 小熊 祐子 福永 興壱 星 旦二 伊藤 史子 苅尾 七臣 星出 聡 藤野 善久 久保 達彦 中村 裕之 福島 富士子 鈴木 昌 渡辺 麻衣子 白石 靖幸 安藤 真太朗 川久保 俊 山川 義徳
出版者
慶應義塾大学
雑誌
基盤研究(S)
巻号頁・発行日
2017-05-31

超高齢化の進行に伴う医療費・介護費等の増大は、先進各国共通の課題であり、疾病・介護予防へと政策が転換され始めている。個人の努力による生活習慣改善に限界が指摘される中で、本研究では住環境(住宅や地域)の改善によるCo-Benefit である健康寿命延伸効果に着目し、大規模なフィールド調査と追跡・介入調査によって住環境と脳情報や要介護状態等、新たな客観データによる健康影響の客観的論拠の獲得を進めている。本年度は、さまざまな世代を対象として自宅と自宅以外の環境が居住者の健康に及ぼす影響の調査を目的とした横断面調査の補充ならびに、研究代表者らの科研費基盤A(23246102、26249083)から実施してきた経年調査(縦断面調査)、住環境・執務環境の建替・改修前後調査(介入調査)を実施した。具体的には、青壮年期~中年期を対象とした調査では、自宅環境と居住者の健康(客観指標:家庭血圧、脳MRI撮像データ、睡眠状態、体温、身体活動量、心拍、IgE抗体等)との関連の検証に加え、オフィスでの知的生産性の検証を行った。日中の知的生産性はオフィス環境そのものの影響のほか、前日の自宅での睡眠・休息が影響するため、良質な自宅・オフィスの環境がもたらす相乗効果に関する被験者実験を行った。また、自宅と自宅以外の環境の相乗効果は幼・少年期にも存在するため、幼稚園・小中学校での活発な身体活動と自宅での良好な睡眠が、病欠確率と学習効率への影響を調査・分析した。環境側の調査項目としては温度・湿度、(一部の調査で光・音・空気環境、カビ・ダニ)測定等を行った。今年度の調査対象地は、高知県(梼原町、高知市)、山口県(長門市)、福岡県(北九州市)、東京都(23区内)、神奈川県(横浜市、藤沢市)、山梨県(上野原市、大月市)、広島県(広島市)、三重県(津市、伊勢市)、熊本県(熊本市)、石川県(志賀町)等であった。
著者
伊香賀 俊治 村上 周三 加藤 信介 白石 靖幸
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.65, no.535, pp.53-58, 2000
被引用文献数
23 11

Building sector has a heavy role to create sustainable society, because CO_2 emissions associated with construction and operation of buildings are estimated to be 1/3 of the whole CO_2 emissions in Japan. These CO_2 emissions were estimated from 1970 through 2050 and the following results were obtained. (1) CO_2 emission between 2008 and 2012 will increase by 15% than 1990 level. (2) CO_2 emission can be reduced by 6% between 2008 and 2012, and reduced by 40% in 2050, if the 30% energy saving, long life and environment-conscious materials are adopted to new buildings.
著者
村上 周三 山口 信逸 浅見 泰司 伊香賀 俊治 蕪木 伸一 松隈 章 内池 智広 橋本 崇
出版者
一般社団法人日本建築学会
雑誌
日本建築学会技術報告集 (ISSN:13419463)
巻号頁・発行日
vol.13, no.25, pp.191-196, 2007-06-20

CASBEE-UD, a new member of "CASBEE family", is developed to assess the environmental efficiency of planned projects consisting of multiple buildings and public areas. Its particular emphasis is on the outdoor environment and compound function of group of buildings. This tool inherits the general framework of other CASBEE tools, such as the assessment by BEE defined as the quality of buildings performance divided by the environmental load. It enhances well-balanced planning of urban projects, so that it can contribute to the realization of sustainable cities.