日本建築学会環境系論文集
Online ISSN : 1881-817X
Print ISSN : 1348-0685
ISSN-L : 1348-0685
80 巻, 713 号
選択された号の論文の6件中1~6を表示しています
  • 宗方 淳, 福田 美羽
    2015 年 80 巻 713 号 p. 567-574
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     This study investigates what impressions residents get from lighting facilities and how those impressions motivate them to choose or use these facilities, and in consequence what leads to energy-saving at home. By nationwide internet survey with 10,000 panels about the possession of 11 lighting facilities, 412 panels were selected for the main survey so as to have enough number of owner of each facility. Then main survey was conducted to ask the panels on the impression of each facility. As a result, impression of those facilities differ in several aspect between owner and non-owner. Non-owner's intention for each facilities is motivated not only by economic or environmental reason but also by functional and/or emotional reason. It was also found that this pattern of motivation for intention to use of each facility varies among the type of panel, which was categorized with their attitude toward environmental aspect and daily life.
  • 中嶋 麻起子, 鉾井 修一, 小椋 大輔
    2015 年 80 巻 713 号 p. 575-582
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     Building facades are often discolored by the airborne algae. The algal growth is strongly influenced by the water supply. In this study, the environmental conditions and the discoloration of walls were measured on the existing building walls on which the algae grew, and the relationship between them was examined. The ambient air humidity was high at the surveyed building mainly because of the topography and trees. Visual evaluations and the L* values of the wall sections that received the direct solar radiation were not discolored because the algae could not grow on wall sections that became high temperatures.
  • シミュレーションによる自然通気及び強制通気による夏期と冬期における性能評価(その1)
    林 侃, 加藤 信介
    2015 年 80 巻 713 号 p. 583-590
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     Detached residential wooden houses are common in Japan. The temperature distribution throughout the house, such as a high temperature in the attic space, can cause discomfort to the occupants. Decay of wooden components within the walls caused by moisture condensation becomes a serious problem. A double-skin system of room-side air gaps is considered to be an effective technique to handle these problems. The air gap extends to envelope the entire house, and ventilated air can move freely in the gap. In this study, airflow network simulation was carried out using TRNFlow to evaluate performance of this system under different conditions. A standard residential house model was simulated by considering conditions of summer and winter. The result verified that the opening area of the wall has more effect than the rooftop and base vents on the total amount of airflow. This system reduces the cooling load of an ordinary detached house by 15% when using natural ventilation, reduces the cooling load by 25% when using active ventilation in summer. Besides, this system can reduce the heating load by 2.5% when using natural ventilation in winter.
  • ― 江戸時代後期の江戸町人地における居住者の生活行動を考慮した夏季熱環境の評価 その4 ―
    高田 眞人, 梅干野 晃
    2015 年 80 巻 713 号 p. 591-598
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     In this study, the summer thermal environment in the living areas of Machiyashiki (= a residential city block) in Edo, early modern Tokyo, was evaluated considering the residents' living activities. First, the ways to deal residents' environmental adjustment behavior on a summer day with the numerical simulation were considered, and the spraying of water at nighttime and the setting out of benches in the streets and alleys were selected. Second, the distribution of surface temperature in the target site on a clear summer day was calculated by numerical simulation. Last, residents' living spaces in the target site were evaluated from the remainder of MRT (Mean Radiant Temperature) and air temperature. The results showed that MRT was generally lower than air temperature in the residents' living spaces, suggesting that residents in the Machiyashiki were able to select cooler living spaces.
  • 清野 友規, 浅輪 貴史, 梅干野 晁, 清水 克哉
    2015 年 80 巻 713 号 p. 599-608
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     The purpose of this study is to grasp the variation of whole tree transpiration rates and capacities of container-grown isolated trees and to analyze tree's morpho-physiological effects. We developed hanging-type gravimeter and weighed 11 species (h=3~6.7 m). We found (1)Daily water use in summer irrigation days were 10~30 kg, equivalent to 0.62±0.36 times of water evaporation from the same size of crown projection area, (2)Maximum latent heat was 2.3 kW/tree, (3)Same tree's capacity can change threefold due to physiological change, (4)Ring-porous species tend to use much water, which suggest the significance of hydraulic capacity under volume-restricted soil condition.
  • 沼中 秀一, 高橋 祐樹, 天野 健太郎, 加藤 信介, 高橋 幹雄, 菊池 卓郎
    2015 年 80 巻 713 号 p. 609-619
    発行日: 2015年
    公開日: 2015/08/18
    ジャーナル フリー
     We surveyed communication and behavior as intermediate indicators of workplace productivity. The method of survey was composed of a subjective (occupants' questionnaire) and objective (using interval cameras) evaluation. These methods were used to assess an R&D factory building. Prior to the construction of a new factory building of the Japanese case study company, R&D facilities existed in two locations 20 km apart (or 50 minutes by car). By the objective survey using the interval camera, an approximate 40% increase in communication volume was observed around writing space, which more than doubled at test sites that were upstream of manufacturing. It is a main cause of the increase of the communication quantity that the number of people in the same space increased because people of work gather in one place. The multiple linear regression analysis of the POE survey implies that teamwork and communication are affected by the number, dimension, and location of meeting rooms and open meeting spaces, in addition to employee satisfaction levels with the view and panorama from the office windows.
feedback
Top