日本建築学会環境系論文集
Online ISSN : 1881-817X
Print ISSN : 1348-0685
ISSN-L : 1348-0685
73 巻, 624 号
選択された号の論文の16件中1~16を表示しています
  • 大西 克則
    2008 年 73 巻 624 号 p. 147-151
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    The growing problem of hydrogen sulfide resulting from the disposal of waste gypsum boards has yet to find an effective solution. Recent years have brought urgent calls for a means of recycling waste gypsum boards.
    This study focused on applications in floors, which among major structural parts are subject to particularly severe conditions. The author examined the form of gypsum after pouring, as well as the formwork and pouring methods, employing the properties of gypsum hemihydrate recycled from waste gypsum boards. The study has established specifications that overcome the problem of afterflame following a fire involving wooden fireproof construction.
  • ―プロトタイプ模型による構造部材の追加と振動伝搬性状との関係について―
    佐野 泰之, 林 健太郎, 成瀬 治興
    2008 年 73 巻 624 号 p. 153-160
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    The environmental vibration is studied not only for horizontal but also vertical vibration; it is focusing on the vibration of vertical direction inside of building construction. The main subject of this paper is to understand the mechanism of vibration propagation. Using the simplified model on construction body, the mechanism of vibration propagation is evaluated at various cases to add the extra construction material such as pillars, beams, walls, floors and ceilings. In addition, it is confirmed that the results of model test are consistent with those of FEM.
  • 奥田 紫乃, 佐藤 隆二
    2008 年 73 巻 624 号 p. 161-166
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    This study aims to conclusively establish a perfect method for evaluation of the visibility of a solid object. We wish to comprehend what are equivalent to the ultimate visibility of a solid object. It is assumed that the ultimate visibility of a solid object consists of three elemental aspects; “Brightness”, “Comprehensibility” and “Balance”. Furthermore, there are 12 focused items on each elemental aspect. In order to examine the effect of each elemental aspect on the ultimate visibility, a subjective evaluation experiment for the visibility of a solid object was carried out. It was found that the visibility aspect of “Brightness” did not directly lead to the ultimate visibility. However, the aspect of “Comprehensibility” of the outlines of a cube, the aspect of “Balance” of the brightness on surfaces of a cube, and the visibility aspect of “Balance” of light direction do lead to ultimate visibility.
  • 熊尾 隆丈, 村川 三郎
    2008 年 73 巻 624 号 p. 167-174
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    In this study, we carried out the experiments to grasp the air conditioning loads generated by cooking in the commercial electrification kitchen appliances. The IH cooker, the electric tilting braising pan, the electric soup kettle, and the IH rotation range were used in the experiments.
    In the first experiment, we set two kinds of loads for heating water. One continued boiling, and another kept at 90[°C] of water temperature in the appliances. The ventilation rate of the exhaust hood was set to 30Q[m3/h] (Q: maximum output of appliances[kW]). In the experiments, the inflow heat and the outflow heat were measured, and also the heat removal efficiency was calculated. Next, we carried out the cooking experiments with the similar measurements. The heat removal efficiency in each cooking was calculated based on the heat removal efficiency calculated by the experiments of heating water. The heat removal efficiency in each cooking showed 80[%] or more high value. From these experiment results, we clarified that the heat generated in cooking was much lower than that of the maximum output. We suggested one idea to calculate the air conditioning loads generated by cooking based on the heat removal efficiency with the exhaust hood.
  • 水沼 信, 澤地 孝男, 鈴木 大隆, 瀬戸 裕直, 齋藤 宏昭, 中村 安弘, 中園 眞人
    2008 年 73 巻 624 号 p. 175-182
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    Mud Wall is external wall filling dry mud between structural materials. Mud Wall has been employed as one of the major building components of traditional wood frame houses in Japan. The Mud Wall has proper performances in terms of heat and moisture capacity and fireproof, whereas thermal insulating performance is inferior to general thermal insulation materials such as glass wool, XPS and so on. In this paper, construction method filling an insulation material outside the mud wall layer is proposed for the mud wall houses in mild climate region. The hygrothermal performance of this method was studied by laboratory experiments and numerical simulations in terms of internal condensation issue. Additionally, impacts of the installation of insulation materials on energy conservation and indoor environments were discussed by heat load simulations. The results are as follows; 1) When construction method filling an insulation material in the cavity is adopted, the concealed condensation dose not occur. 2) The annual heating and cooling load of the mud wall house, of which wall is insulated is considerably lower than the existing mud wall house, but improvement of envelope airtightness is necessary to comply with the Japanese next generation energy saving standard.
  • 于 〓, 渡辺 俊行, 吉野 博, 高 偉俊
    2008 年 73 巻 624 号 p. 183-190
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    At present, the energy consumption in China has greatly increased with the rapid economic development annually, especially in residential sector. The objective of this research was to grasp the energy consumption situation of residential buildings in China. A questionnaire survey was done in northeast, middle and east of China, and this survey will plan to spread to the whole country. The questionnaire survey included the characteristics of the investigated buildings, the monthly energy consumption and the present use conditions of household electronic appliances. In this paper, the results of the survey were reported, and the heating consumption situation was analyzed using Typical Meteorological Year data of China by the numerical simulation.
  • 姜 燕, 龍 有二, 香川 治美
    2008 年 73 巻 624 号 p. 191-197
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    The purpose of this study is to clarify the psychological influence of thermal environment on elderly people in their welfares facilities. Two facilities where the elderly people actually used were regarded as objects to conduct the thermo-humidity measurement and hearing survey.
    As for actual living environment during investigation time, the range of measured temperature was wider than criteria value of indoor temperature for elderly people in winter and summer. While the range of measured PMV was wider than the standard comfortable value of PMV (-0.5∼0.5) in winter and summer, the elderly people announced that it was neutral for them. Humidity-reaction of elderly people was also duller, and it was also difficult for them to perceive the temperature gradient from head to foot.
  • 朴 天吉, 梅干野 晁, 何 江
    2008 年 73 巻 624 号 p. 199-206
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    Authors propose building components with a passive ventilation function called BAC (Breathing Architectural Component). It has an air infiltration function that can control the flow of heat, air and moisture. In this paper, from the viewpoint of the indoor thermal environment adjustment in the winter, the new indoor side position which adopts the device of natural ventilation function of BAC was proposed in order to reduce the outside inflow of low-temperature from reaching indoors. The performance evaluation on the room air-temperature distribution after inflowing the outside air to the inside of BAC and to the room was carried out based on the model of a full scale test house using numerical value airflow analysis under both steady and unsteady conditions. The result showed that the indoor air-temperature distribution and that the indoor cold stagnation disappeared in the low corner area of the room.
  • 非一様型解適合格子生成法の開発 (その3)
    今野 雅, 大西 直紀, 鎌田 元康, 坂本 雄三
    2008 年 73 巻 624 号 p. 207-214
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    In order to generate effective grid for CFD analysis of wind environment around buildings in urban area, we newly develop non-uniform type adaptive mesh refinement method (NUAMR). Different from the conventional uniform type AMR (UAMR), NUAMR won't smooth mesh outside a windward stream tube of a target region. With comparison of UAMR and NUAMR in several flow cases, we reveal NUAMR's advantage as listed below. 1) NUAMR and UAMR have almost same accuracy in main CFD results such as wind pressure coefficient of a building or velocity ratio around a high-rise building. 2) NUAMR can automatically generate computational-cost-effective mesh which has much smaller number of mesh than UAMR creates.
  • ―床用接着剤が2-エチル-1-ヘキサノール放散性状に及ぼす影響―
    千野 聡子, 加藤 信介, 徐 長厚, 安宅 勇二
    2008 年 73 巻 624 号 p. 215-220
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    The emission mechanism for 2-ethyl-1-hexanol (2E1H) is considered that water with high pH in sub-floor material reacts to compounds containing the 2-ethyl-1-hexyl group in PVC flooring and the adhesive. In this study, PVC floorings are attached using various adhesives to a self-leveling sub-floor material that contains water, and their 2E1H emission rates are measured. Furthermore, the components of the adhesives are analyzed using chemical analysis. It is found that the 2E1H emission rate from the floor is affected by the type of adhesive. On the other hand, some components in the adhesives may suppress the hydrolysis of esters.
  • 岡本 茂, 三浦 光城, 山口 弘雅, 尾本 和夫, 高岡 昌史, 岡 建雄
    2008 年 73 巻 624 号 p. 221-227
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    In this paper, we have developed a calculation method for estimating heat fluxes of radiation and convection of ceiling radiant panels, using piping density in panels and the temperature difference between the room and the supply water. And we have measured heat fluxes of panels in some cases in an environmental test room. By comparing the values estimated by the calculation method to the experiment data, the calculated values closely match the values obtained from experiments, which means that this calculation method is practical in estimating the radiant panel performance in the design phase.
  • 小南 和也, 高地 進, 小早川 香
    2008 年 73 巻 624 号 p. 229-235
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    The basic numerical values which are used for the decision of the proper capacity and the structure of Oil-Interceptor are based on the investigation results that were done about 40 years ago. Because the age has changed, it is necessary to correct its basic numerical values. In this report, to decide Oil-Interceptor that suites the current state, the carwash experiments were done. And the authors proposed revised basic numerical values.
  • 中島 裕輔, 山田 正也, 高口 洋人
    2008 年 73 巻 624 号 p. 237-243
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    EXPO2005 was held from Mar. 25 to Sep. 25 in 2005. In this EXPO Nagakute area, air-conditioning energy were supplied from five DHC plants. We had recorded air-conditioning energy, gas, power, and upper and lower water consumption in this area. In this study, we chiefly analyze the operation results of these DHC plants. As a results, main three plants had tended to operate in a lot of numbers of the refrigerating machine for the load. In that situation, plant No. 6 which was subdivided to four showed better COP value, and importance of quipment composition of plants was confirmed. And, it was problem that excessive load calculation of enterprise pavilions influenced the plant load factor decrease.
  • 村越 千春, 渡辺 俊行, 赤司 泰義, 中上 英俊
    2008 年 73 巻 624 号 p. 245-252
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    11 years have passed since ESCO businesses in Japan started in 1996. From the beginning, ESCO was placed as useful countermeasures cope with global warming, and was supported by government. In this paper, we describe key features of the ESCO market, market trend from introduction of ESCO business to development, the detailed analysis of the survey results and the features of ESCO business in Japan.
    On the other hand, ESCO is the business of which realizes energy-saving and economical performance simultaneously. In this paper, we verified the evaluation method of the energy efficiency and economic performance.
  • 山邊 友一郎, 谷 明勲, 河村 廣
    2008 年 73 巻 624 号 p. 253-260
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    To conserve natural resources and reduce CO2 emissions, the authors developed a simulation system for an artificial society in which resources are circulated. Furthermore, parameters for the recycling and reuse of structural members were considered. An artificial circulation type of society is developed based on a concept of a recurrent architecture network proposed previously by the authors. This artificial society is described by a multi-agent model comprising the following agents: users, a builder, a blast furnace steelmaker, an electric furnace steelmaker, a reuse manufacturer with a stockyard, and a waste disposer. Objective structures are assumed to be steel structures, and steel members are traded among employed agents. Simulations are performed under different parameters such as the used steel collection rates, the steel recycling yield, and reused steel relevance ratios. Effects of such parameters on resource conservation and reduction of CO2 emissions are discussed based on simulation results.
  • 李 榮蘭, 小西 敏正, 佐藤 達也, 中村 成春
    2008 年 73 巻 624 号 p. 261-266
    発行日: 2008/02/28
    公開日: 2008/10/31
    ジャーナル フリー
    Year by year, the population of experts is decreasing, who deal in wood which has been Japanese traditional building material from ancient times. In wooden house market, development of new building methods rather than traditional ones, and appearance of new way of production like pre-cut lessen the amount of skilled worker's jobs. That makes it harder to hand down the traditional skills to enough numbers of the next generation engineers. On the other hand, increase of the demand for wooden houses brings rapid expansion to Korean wooden house market. Various problems are coming to light, that are to be better on. As far as the present condition is concerned, training the next generation of engineers is essential as a way of popularization of wooden houses in Korea. Therefore, in this study, we investigate Japanese vocational schools of carpenter, and reveal existing conditions and problems, then put our considerations, examine and propose the remedial ideas, aiming at contributing to bringing on Japanese talented engineers and to popularization of wooden houses in Korea.
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