日本建築学会環境系論文集
Online ISSN : 1881-817X
Print ISSN : 1348-0685
ISSN-L : 1348-0685
76 巻, 665 号
選択された号の論文の6件中1~6を表示しています
  • 日射熱吸収用透明ガラスを対象とした冷暖房負荷軽減効果
    崔 哲, 水谷 章夫, 青木 哲
    2011 年 76 巻 665 号 p. 587-594
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    In order to verify the mitigating effects of transparent solar heat absorption glass on heating and cooling load, thermal properties of various types of glass were measured and the validity of the measurement was examined. The results obtained were as follows.
    1. Overall heat transfer coefficient and solar radiation transmissivity of each sample were confirmed to be reliable.
    2. Based on the measured values, internal heating load was calculated and the calculation proved that the load increased when the solar radiation transmissivity was small.
  • 洗濯干しを利用した室内湿度調整性能
    山下 絢也, 佐藤 真奈美
    2011 年 76 巻 665 号 p. 595-600
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    Many residences with high thermal performance are equipped with sensible-heat type heating equipment that generates no moisture. To preserve air quality, therefore, such residences require ventilation at scheduled intervals, resulting in the problem of dry room interiors. Humidifiers used for simple hygrothermal regulation require approximately 150 W of electricity, encouraging additional energy consumption. In this study, we simulated a hygrothermal distribution that does not consume energy, using moisture generated by drying wet laundry in a room. There was no damage due to condensation formed on windows or other moisture condensation in the room next to the heated room.
  • ガラスカーテンウォールスパンドレル部の結露防止に関する研究 その1
    権藤 尚, 三原 邦彰, 樋口 豊, 鉾井 修一
    2011 年 76 巻 665 号 p. 601-607
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    Recently, the glass curtain wall façade system is increasing in the office building. As a result, the dew condensation sometimes appears at the part of spandrel. In this paper, studies were made about the dew condensation on spandrel by experiment. The results of the experiment demonstrate the following points.
    1. The experiment results show that indoor air through the interstices into spandrel causes dew condensation. At first, we have to close interstices to prevent dew condensation.
    2. Dew condensation occurs with vapor from the silicate calcium board when solar radiation is received. Therefore, it is necessary to gain the route to let vapor escape.
  • 小林 知広, 甲谷 寿史, 山中 俊夫, 相良 和伸, 桃井 良尚, 浅井 香里
    2011 年 76 巻 665 号 p. 609-616
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    The conventional method to predict flow rate of a room cannot work well for cross-ventilation through large openings, and predicted flow rate becomes smaller than actual one. As a final goal of the work, the authors aim to establish an improved prediction method based on mechanical energy balance inside stream tubes passing around/through a building, i.e., power balance model. Since the cross-ventilation is quite complicated flow phenomenon, a detail of the flow characteristics in flow paths inside/outside the building has not been sufficiently clarified. This paper first presents discrepancy in flow rate between conventional prediction method and actual one by means of wind tunnel experiment. Afterwards, variation in flow quantities inside flow path through a cross-ventilated room is shown in accordance with opening size to understand the phenomenon. Finally, to validate CFD analysis which is essential to analyse the stream tube in the future work, its accuracy is to be shown by comparing experimental and numerical results for the flow path passing through a simplified building model.
  • 金 〓兌, 田辺 新一, 金 泰佑, 川村 聡宏
    2011 年 76 巻 665 号 p. 617-622
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    Phthalates are used as plasticizers and flame retardants in building materials and phthalates emitted in indoor environment tend to adhere to house dust. According to Wensing, infants take dust 10times as adults, so an investigation on the concentration of phthalates in house dust is important. This study was measured the concentration of DEHP for house dust and compared for house dust before and after renovation in Korea houses. And, using micro-chamber method, for the building products of Japan and South Korea were measured the emission rates of semi volatile organic compounds. Floor product in Korea is higher than the emission rates of DEHP for floor product in Japan.
  • 菊池 文, 野崎 尚子, 持田 灯, 渡辺 浩文, 吉野 博
    2011 年 76 巻 665 号 p. 623-631
    発行日: 2011/07/30
    公開日: 2011/11/17
    ジャーナル フリー
    This study aims to investigate and clarify the effects of roadside trees and automobiles on airflow distribution, turbulent diffusion of air pollutants and thermal environment within street canyons by means of the field measurements. The detailed field measurements were carried out at two streets with different densities of roadside trees and traffic volume in the central part of Sendai city, Japan. The microclimates and NOx concentrations as well as traffic volume were measured. The effects of roadside trees were investigated by comparing the results measured at the two streets. The results clearly showed that thermal environment has been improved but NOx concentration also increased simultaneously by the roadside trees. The more the number of moving automobiles were, the higher the NOx concentration was at the downstream of the circulating flow within street canyons due to the gas emission from automobiles.
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