著者

鈴木 大隆 北谷 幸恵 岩前 篤 永井 久也 小南 和也 坂本 雄三

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.73, no.627, pp.591-597, 2008-05-30 (Released:2009-02-25)

参考文献数

13

被引用文献数

2 2

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There are two points of view for the prevention design of moisture problem in the building insulated envelope. One is the strictly prevention of high moisture condition in the insulated wall cavity. The other one is the permission of short-term high moisture condition, condensation and high moisture content of the wooden material as long as keeping physical durability. If the later standpoint were chosen, the insulated envelope design of every variety for Japan would be possible. Nevertheless, there are no criteria to estimate the damage of physical durability of wood by the biological factors related high moisture condition. The points of this paper are as follows; 1) The importance of estimation damage of woods by the moisture problems is describes. 2) 2 case of hygrothermal steady state experiments were done to get basic acknowledge of woods damage by biological factors considering term, water content, temperature and humidity, physical durability.

著者

高田 和規 遠藤 卓 立松 宏一 村田 さやか 廣田 誠一 北谷 幸恵 鈴木 大隆 羽山 広文

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.82, no.732, pp.165-173, 2017 (Released:2017-02-28)

参考文献数

15

被引用文献数

1 1

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The purpose of this study is to quantitatively evaluate the effectiveness of the components of existing PVC windows in the country in providing thermal insulation, to identify the optimal conditions of the components and the insulation performance of windows with the components in the optimal conditions, and to conduct a performance test on samples under the practical specifications for production. We briefly summarize the results below. 1) For the frame, using a method of quality engineering, we examined the reduction in conductive heat flow across each cross-section for multiple regulatory elements, which would contribute to thermal insulation. We then derived the optimal condition (level) for each regulatory element and showed the reduction rate under the optimal condition (sash frame part 19%-21%, fix frame part 6%-10%, mullion frame part 22%). Furthermore, based on the SN ratio, we found that the reduction rate is highest with the following components: inner-frame insulator in the sash frame part and fix frame part, and physical properties of mullion reinforcement in the mullion frame part. 2) As for the glazing part, we examined the specifications of the Low-E film suspended air space of a insulated glass and observed the effect of a Low-E film, optimized the arrangement, and the optimal thickness of the air space for each gas fill. We also examined the thermal transmittance at the center of glass with xenon gas having 3 films (0.29 [W/(m2·K)]), and those at the center of glass with krypton gas having 2 films (0.39 [W/(m2·K)]). 3) We determined the thermal transmittance of the window (0.56 [W/(m2·K)]) with the combined optimal conditions for the frame and glazing parts. In actual manufacturing, however, there are two problems: a technical problem (of forming a metal film inside the frame cross-section and arranging phenolic foam insulator without leaving any space) and a high manufacturing cost (associated with filling xenon gas inside the insulated glass). We therefore examined the insulation performance of samples having practical specifications for production. As a result, we obtained a measured thermal transmittance of 0.63 [W/(m2·K)] in contrast to the calculated value of 0.65 [W/(m2·K)].

著者

永井 久也 鈴木 大隆 北谷 幸恵 岩前 篤 小南 和也 坂本 雄三

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.74, no.638, pp.457-463, 2009-04-30 (Released:2009-11-24)

参考文献数

6

被引用文献数

1 1

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There are two points of view for the prevention design of moisture problem in the building insulated envelope. One is the strictly prevention of high moisture condition in the insulated wall cavity. The other one is the permission of short-term high moisture condition, condensation and high moisture content of the wooden material as long as keeping physical durability. If the later standpoint were chosen, the insulated envelope design of every variety for Japan would be possible. Nevertheless, there are no criteria to estimate the damage of physical durability of wood by the biological factors related high moisture condition. In the previous paper, we reported about the concept of the prevention design of moisture problem in the building insulated envelope and the relationships between water content and decay various woods under hygrothermal steady conditions. In this paper, the relationships between water content and decay of various woods under two kinds of hygrothermal transient conditions are shown.

著者

立松 宏一 廣田 誠一 高倉 政寛 月館 司 鈴木 大隆 羽山 広文

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.80, no.707, pp.67-77, 2015-01-30 (Released:2015-03-30)

参考文献数

25

被引用文献数

1 3

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The thermal performance and equipment type specified for a newly built house were investigated as benchmarks to enable the selection of appropriate insulation and equipment specifications. The prevalence of electric heater installations for space heating and hot water supply decreased in 2012, compared to 2011. However, it is estimated that the primary energy consumption is high in particularly cold areas of Hokkaido, because this type of equipment remains common in these areas. Because there is an initiative to contractors when the equipment type is determined, it is important to provide appropriate information to these contractors.

著者

坂部 芳平 鈴木 大隆 伊庭 千恵美 松岡 統 最上 美緒

出版者

公益社団法人 空気調和・衛生工学会

雑誌

空気調和・衛生工学会大会 学術講演論文集 平成17年 (ISSN:18803806)

巻号頁・発行日

pp.353-356, 2005-07-25 (Released:2017-08-31)

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The characteristic of gap for every specifications, such as a floor, a wall, a roof, an opening, etc. which constitutes structure skeleton in buildings of wood frame construction system, has been grasped quantitatively. Furthermore, a comparison with the result depended on survey of the airtight performance in buildings that have already been built was performed, and the validity of a measurement result and the extendibility to a real residence were examined.

著者

鎌田 紀彦 鈴木 大隆 廣田 誠一

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.63, no.513, pp.39-45, 1998-11-30 (Released:2017-02-02)

参考文献数

4

被引用文献数

1 1

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The aim of this study is to determine the criteria for the wall structures in cold region where fibrous thermal insulation materials are used, by measuring the hygrothermal condition of the full size specimen wall which modeling the execution defects of thermal insulation and vapor barrier. From the experiment results, the wall with air convection in the cavity has possibility to make condensation at the bottom of the wall. It is clarified that an attic space, wall cavities and a crawl space must be separated to avoid air flow connections among them. Vapor barrier installed continuously, and ventilated air space are also effective to keep from making condensation in the insulated wall cavity.

著者

立松 宏一 池田 裕雅 高倉 政寛 鈴木 大隆 福島 明

出版者

一般社団法人日本建築学会

雑誌

日本建築学会北海道支部研究報告集 (ISSN:13440705)

巻号頁・発行日

no.83, pp.299-302, 2010-07-03

著者

本間 義規 鈴木 大隆 坂本 雄三

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.65, no.530, pp.25-30, 2000

被引用文献数

4 7

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To clarify the hygrothermal environment of vertical edge insulation methods in moderate and humid climate region, especially in the summer involving the rainy season, temperature and relative humility of 12 houses have been measured. From the measurement results, the temperature variation in the crawl space tends to slide slightly backward compare to the outdoor air. Evaporation from the drying concrete keeps the humidity in the crawl space rather high, especially in the summer just after completion. But it becomes moderate on condition that it passes through the winter. Daily diurnal range of temperature in the crawl space is smaller, and absolute humidity is lower, than the other construction method, that also ensures against condensation proofing.