研究発表

オフィスにおける知的生産性向上が重要とされ、既往研究では知識創造向上におけるリフレッシュスペースといったサポート空間の室内環境改善による有効性が示されている。また、昼光利用や床面積・天井高等の光・視環境が自律神経に与える影響が示されている。以上のことからサポート空間が生理・心理・作業効率に及ぼす影響の検証を目的に被験者実験を2013年秋に行った。結果、サポート空間の光・視環境が自律神経を介して疲労・眠気・作業効率に与える影響を示した。

近年、社会環境の改善が国民の健康に影響を及ぼすことを踏まえ、地域や職場等を通じた健康増進への働きかけを必要としている。しかし、どのような環境改善を行うべきかについては、具体的に明らかにされていない。本研究では、知的生産性及び健康に関するWEBアンケート調査を実施する。結果として、作業効率や労働機能障害の有病リスクには執務環境が、また健康状態には住まい環境や個人属性が影響することが確認された。

It is said that 70% reduction of CO_2 emissions from 1990 levels will be required in Japan up to 2050. On the other hand, the CO_2 emissions associated with commercial buildings are extended rapidly in recent years, thus reduction of CO_2 emissions in this sector is urgent and crucial concern. In this paper, the authors have developed the long-term prediction model for CO_2 emissions associated with commercial buildings up to 2050. The prediction via this model shows a potential maximum 71% reduction of CO_2 emissions associated with commercial buildings from 1990 levels by 2050.

Sick building syndrome caused by indoor air pollution has become very serious nowadays. Increase of the amount of ventilation is recommended for improving indoor air pollution. But it has negative effects on energy saving and global warming mitigation. In this study, the effects of the ventilation on direct health damages by indoor air pollution, and on indirect damages with cooling and heating energy consumption are evaluated using LIME; Life-Cycle Impact Assessment Method of Endpoint modeling. The result of assessment proves that ventilation is effective in human health damages and 0.5 times/h of air change rate is most effective in total expenses.

This study analyses how much greenhouse gas could be reduced by renovating the thermal insulation for complex houses with IBEC model, focusing on the period for renovating and the differences of insulation level. Non-freon type of polyurethane spray foam was applied for the renovation. As a result, the LC-GHG value for 100 years can approximately be reduced by 10 to 65%, those differences mainly caused by the difference of initial insulation level.

The purpose of this study is to simulate the effect of reductions in greenhouse gas emissions by upgrading insulation levels of existing houses. If 50% of existing houses that were built over 30 years ago (in 2005) are renovated to comply with the latest energy-saving standards (established in 1999) by 2010, and 50% of the residual fluorocarbons are recovered and disposed of during demolition, in addition to the measures for new houses (i.e. improving insulation standards and replacing foaming agents with non-fluorocarbon types), GHG emissions during the period 2008-2012 can be reduced by 2.0% over 1990. Moreover, if 50% of existing houses which were built over 20 years ago (in 2005) are widely targeted, GHG emissions during the period 2008-2012 can be reduced by 2.9% over 1990.

The CO_2 emissions associated with office buildings are extended rapidly in recent years, thus reduction of CO_2 emissions is urgent and crucial concern. In this study, the authors have developed the long-term estimation method for CO_2 emissions associated with office buildings. However it is also important to consider quality of life in building sector. In this paper, new estimation method to estimate the level of environmental quality for office buildings till 2050 is developed. As a result, there is a possibility to satisfy both of great reduction of CO_2 emissions and improvement of environmental quality for office buildings.

Today, many school buildings are decrepit and in term to be repaired. Surroundings to the children are very important for their healthy growth. Lighting/thermal environment takes huge effects. At the same time, there is a need in energy conservation for the sake of global warming. Therefore, the classrooms have to be kept in good environmental condition by low energy in the improvement and this paper will show the investigations for one of the ideas of making good classrooms including the consideration of the trade-offs in lighting/thermal environment and energy conservation.

Control to the negative environmental impact and improvement of thermal environment is achieved by eco-renovation and environmental education in school. In addition, a sustainable local society becomes possible by the environmental consideration which spreads through eco-renovation and environmental education in school. In this study, it takes point on the effect to region cause by eco-renovation and environmental education in school. As the result, it turned out to effect positively to the local residence by green saving promotion in school.

The energy consumption in building sector is extending rapidly in recent years. It makes the promotion of sustainable buildings urgent issue to be discussed. We can benefit from sustainable buildings; an improvement of productivity, profits with carbon trading scheme, etc. In this study, the authors have reviewed various benefits of sustainable buildings, and calculated energy-related benefits. As a conclusion, by making the benefits clear, we show people useful information about applying sustainable buildings.

These years residential energy consumption has been increasing sharply in China along with the high economic growth. Thus people pay much more attention to the issues of reducing the energy consumption and CO_2 emission. This study developed a Macro-model to forecast the CO_2 emission of residential buildings in China up to 2050. Former research reported results of Shanghai. And here we chose Beijing, the capital of China as another subject. By combining such Global warming count measures into the Macro-model it was able to forecast the CO_2 emission of Beijing's residential buildings in several energy-sufficient scenarios.

In recent years, the environmental load attributed to energy consumption in office building sector is rapidly increasing. Therefore, promoting construction and diffusion of Sustainable Office Buildings (SB) is becoming urgent issue. In this study, authors have developed the diffusion model for SB based-on consciousness survey of building owners. This model enables us to evaluate an effect on SB diffusion in several cases where building owners are given incentives (ex. subsidization) for construction of SB. It is now possible to provide policy makers with useful information to promote SB.

At present, along with the high economic development, the energy consumption has increased sharply in Chinese residential sector. To take effective measures for making Low Carbon society, China is necessary to analyze the energy consumption in residential buildings. This study developed a Macro-model to forecast the CO_2 emission of residential buildings with the annual heating and cooling loads which calculated by heat load simulation and compared results from the simulation with the Chinese statistical data or the actual measurement