日本建築学会環境系論文集
Online ISSN : 1881-817X
Print ISSN : 1348-0685
ISSN-L : 1348-0685
77 巻, 675 号
選択された号の論文の11件中1~11を表示しています
  • 地域特性を考慮した水資源データ構築に関する研究 (その2)
    小澤 諭, 岩松 俊哉, 鎌田 元康, 市川 憲良
    2012 年 77 巻 675 号 p. 331-337
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    This paper proposes improved simple estimation method for quantity of evapotranspiration. We first improved estimation formula for quantities of evapotranspiration based on the Makkink method. The calculation accuracy of improved estimation formula is closer to that of Pennman method. This means that estimation accuracy is excellent in general. We also revealed the two coefficients of improved estimation formula to calculate quantities of evapotranspiration at any region in Japan. These coefficients contribute to simplify the improved estimation formula. The estimation accuracy of simplified formula is equivalent to that of the improved estimation method.
  • -建物の断熱仕様、居住者の位置および空調方式が空調負荷に及ぼす影響-
    崔 軍, 渡辺 俊行
    2012 年 77 巻 675 号 p. 339-348
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    Currently, the air-conditioning load is calculated for transmission heat flow from the wall surfaces to indoor air because the air-conditioning load is defined for the heat flow that it should supply indoor air with to keep a fixed room temperature. Even if the air-conditioning load calculated based on this definition is removed precisely, the room temperature become constant, but the comfort of the resident is affected by the climatic condition and will change theoretically. The present writer showed a paper on air-conditioning load calculation method considering thermal sensation of the resident to solve this problem. In the new air-conditioning load calculation method, in order to maintain PMV of a certain place at a preset value, the heat flow which should be removed from indoor air or the wall surfaces is defined as air-conditioning load. Until now, the algorithm of this new load calculation method was explained. However the influence on the air-conditioning load of building insulation specifications, resident position and air conditioning system was not examined in detail. This paper analyzes influence of insulation specifications, resident location and air conditioning system on load calculated using the new calculation method.
  • - 第1報 CIE標準一般天空Gradation関数,Indicatrix関数の近似関数を用いた壁面日射量計算法 -
    細淵 勇人, 吉田 治典
    2012 年 77 巻 675 号 p. 349-356
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    On the calculation of the values of heating/cooling loads based on more real state of a building in the city, influences of the sky radiance distribution and the surroundings around the building should be take into account. However they have not been considered to be important factors.
    In this paper, with the CIE standard general sky and the approximations that have analytic solution, we intend to present a new calculation method of surface irradiance value of the building surrounded by the other buildings. In the development, the accuracy of calculation and the processing time are made much account.
  • 森 太郎, 辻 圭輔, 菅沼 秀樹, 羽山 広文, 菊田 弘輝
    2012 年 77 巻 675 号 p. 357-363
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    Corridors on an apartment house are usually at indoor in Hokkaido. It can be achieved to make non-frozen and non-severe cold sharing space by installing those corridors on south side of apartment houses. Those places are useful for people in cold region. In this paper, the measurement results of thermal environment in the southern corridor at eastern Hokkaido is introduced. Also, the calculated result, thermal environment, by Esp-r and distribution of solar radiation by radiosity method are introduced.
    We found the following as the result. 1) The temperatures in the southern corridors during daytime are over 15 degree Celsius in winter season. 2) Temperature without heating system can be predicted by simple heat balance equation. 3) Southern corridors in the Pacific ocean side region can maintain high temperature in winter season. 4) The results by radiosity method indicates a. high solar absorptance interior, b. narrow corridor, c. not-large window are effective to achieve high temperature in corridor and high transmittance into room simultaneously. Also, we suggested the simple calculation method for solar absorption and temperature without heating in southern corridors.
  • 諏訪 好英, 土屋 貴史
    2012 年 77 巻 675 号 p. 365-374
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    Recently, demand of data centers is increasing, because of the increase in the demand of Internet and ICT systems. Server rooms require efficient air conditioning system to secure stable running, and nowadays the demand of the efficiency requires more because heat generation of computers and equipment augment greatly. Moreover, high efficiency of air conditioning system is an important task from the view of cost reduction and energy conservation. In the previous study, CFD simulations were performed assuming various airflow conditions, and it was found the system, which has both supplies and return openings on the ceiling with appropriate alignment, had a good performance. An advanced airflow system applicable to server rooms in data centers was developed based on this result. In the present work, characteristic of this system was studied by the experiment using a 1/4-shrink model. As the result, advantage of advanced airflow system was again confirmed with comparing with previous conventional systems. The system showed a good performance especially when the heat of servers became larger, and when supply airflow volume from air-conditioning system was reduced.
  • 木造軸組構法と木造枠組壁構法の戸建住宅の隙間ネットワーク
    林 基哉, 大澤 元毅
    2012 年 77 巻 675 号 p. 375-382
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    In order to estimate the influences of air pollutants from the concealed spaces upon the indoor air quality, slice models of common wood construction, airtight wood construction and airtight wood frame construction were constructed. The equivalent leakage areas were measured using fans and mass flow controllers. The results were the followings.
    1. The equivalent leakage areas of airtight wood construction and the airtight wood frame construction were smaller than those of common wood construction.
    2. The infiltration routes from the concealed spaces to the indoor spaces were found also in the case of airtight constructions.
  • 空調用気化式加湿器のマイクロ波殺菌に関する研究 (その2)
    姜 允敬, 加藤 信介, 成 旻起, 柳 宇, 阿部 恵子, 原田 光朗
    2012 年 77 巻 675 号 p. 383-388
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    In this study, microwave irradiation was considered to be used to sterilize evaporative humidifiers in air-conditioning systems. A mockup of humidifier was prepared to identify the applicability of the microwave irradiation system. For effective heating of an evaporative humidifier element, the optimum operating conditions of the system such as usage of air blower and water spray during microwave irradiation, microwave output powers and dry or wet element condition were investigated. The results showed that the front surface temperature of the element was higher in wet condition than in dry condition, whereas back surface temperature was higher in dry condition. Further study to make the surface temperature of the element uniformly high shall be necessary.
  • -住宅と地域環境における健康形成構造の地域間比較-
    安藤 真太朗, 伊香賀 俊治, 白石 靖幸, 星 旦二, 川村 健一, 川久保 俊, 大重 和恵
    2012 年 77 巻 675 号 p. 389-397
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    A questionnaire survey was administered to adult residents of three locales: a large city (Kitakyushu city); a small city (Obuse Town); and a rural village (Yusuhara town), in order to clarify the hierarchical structure of health related factors of housing and regional environment dependent on urban structure and scale. As a result of structural equation modeling, health related factors model in Yusuhara was shown that 35% of residents' overall health may depend on their housing and regional environment, and it was the largest percentage of three locales. Besides, differences were found among the health related factors structure. These results indicate that design guidelines for health promotion that correspond to the urban structure and scale will be required.
  • 蘇 媛, 高口 洋人, 閆 軍威
    2012 年 77 巻 675 号 p. 399-407
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    This paper presents in depth analysis of the actual energy consumption structure of a science and engineering university campus in southern China. It also clarifies for the first time the hourly energy consumption characteristics of such campus buildings in this area. Firstly, the measurement meters were installed on the power circuits of 11 different buildings in the campus to obtain hourly end-user energy consumption data from Sep.1st 2009 to Aug.31st 2010. Then examination of energy consumption unit according to the different buildings has been analyzed base on the measured data. Furthermore, the energy consumption of buildings with different usages has been evaluated; the analysis was performed for different days and different load periods. Finally, a detail of energy consumption unit was discussed and constructed based on it.
    From the analysis, variation of daily energy consumption unit structure of different usage buildings and the whole campus is clearly indicated. The energy consumption of the research laboratory buildings accounted for 58% of the whole campus' energy consumption. The average daily energy consumption unit of the library was the highest. Among the proportion of the total energy consumption for the whole campus, the cooling consumption accounted for 52% with 72.18 MJ/(m2•a), electricity consumption of lighting and electrical socket accounted for 23% with 32.01 MJ/(m2•a). The maximum value of hourly average electricity consumption unit for the whole campus in each month was recorded at 12:00 Oct. 2009 with 24.08 kJ/(m2•h) and the maximum value of hourly average cooling consumption unit was recorded at 16:00 Oct. 2009 with 71.14 kJ/(m2•h) respectively. The energy consumption unit in different load period was listed to indicate which building and which period consumed more energy. In particular, this study we aim to find out peak energy unit of the different buildings, in order to make a proposal for energy conservation measures to reduce peak energy amount of the whole campus to the greatest possible extent.
  • ―広島地域の全電化住宅を対象とした電力消費量に関する研究―
    安藤 元気, 村川 三郎, 西名 大作, 松永 裕介
    2012 年 77 巻 675 号 p. 409-416
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    In this paper, the energy consumption of the electric housing located in Hiroshima area were grasped, and the relationships between the energy consumption and the characteristics of household and housing were examined. To predict the annual and monthly energy consumption, the Quantity Theory Cluster I was applied by using the factors expected to affect the energy consumption. And the influence of each factor was examined.
    As a result, in the prediction of annual energy consumption, multiple correlation coefficients of 0.823 was obtained, and the values of 0.65-0.8 were obtained in the prediction of monthly energy consumption. Also, it was clarified that "total floor area" and "hot-water supply system" have major influence on energy consumption in winter and middle season, respectively.
  • 磁気シールドルームの磁気ノイズとなるグラスウールダクトの超低周波共鳴およびその対策に関する研究 (その2)
    山崎 慶太, 阿部 隆之
    2012 年 77 巻 675 号 p. 417-423
    発行日: 2012/05/30
    公開日: 2012/07/02
    ジャーナル フリー
    Although microtremors transmitted from the concrete floor can be reduced by the Active Microtremor Isolation system (ACMI) installed underneath the magnetically shielded room (MSR), weak but significant magnetic noises at frequencies of less than 20 Hz were still detected by SQUID magnetometers when the MSR was being air-conditioned. This magnetic noise was identified to be due to microtremors caused by sound pressure from the mechanical resonances of glass wool duct at low frequencies. In this paper, five of side branch ducts were connected to the main duct to reduce such sound pressure, microtremor and magnetic noise in the MSR. We compared the measured frequency dependencies of sound pressure, inner-wall vibrations, and magnetic noise in the MSR, with and without the side branch duct.
feedback
Top