著者
藤原 陽三 絵内 正道 鈴木 憲三 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.73, no.628, pp.767-774, 2008-06-30 (Released:2009-09-30)
参考文献数
9
被引用文献数
4 2

In order to search trends in further energy saving in highly insulated and airtight houses in Hokkaido, Japan, an actual-condition investigation on a central-heating system fitted in five such houses, each with different methods of construction, was performed. The results were obtained as follows.:1)The equivalent leakage area value of a steel frame construction was 3.2cm2/m2 that was less than a two-by-four construction(0.33cm2/m2) and a conventional wood construction(1.1-1.7cm2/m2) .It is important to be improved air-tightness of steel frame construction houses by various construction methods. 2) Heat loss coefficient estimated from these experimental results was 0.94 -1.59W/(m2•K). To reduce energy consumption for heating,it will become more important to improve thermal-insulation properties and air tightness.3) The heating-system efficiency obtained from these experimental results was in the range of 72 to 93%. Although the ratio of actual boiler capacity to demanded heat-source capacity extrapolated from actual measurements ranges from two to three times,the effect on system efficiency was less than 10%.However it is necessary to include this 10% in the task of planning a heating system.
著者
絵内 正道 荒谷 登
出版者
一般社団法人日本建築学会
雑誌
日本建築学会論文報告集 (ISSN:03871185)
巻号頁・発行日
no.264, pp.91-98, 1978-02-28
被引用文献数
18

In Hokkaido, most of houses are heated partially and intermittently by using a stove (semi-radiation type). The authors measured the room air temperature of such houses during the heating season, and studied on the controlled room air temperature and the living way affected by the thickness of thermal insulation and type of heating system. The purposes of these reports (part-1, 2 and 3) are to point out from those results what kind of changes shall be brought on the room air temperature and the usage of heating according to the improvement of insulation in the future. In this report, the varying patterns of the temperature at the ceiling θ_c and of the floor level θ_f are mainly discussed. In the case of the partial and intermittent heating by using a stove, the temperature difference of those two levels and those varying patterns change according to the fall of outdoor temperature. For example in the early season of heating, the varying patterns of θ_c are high in the morning and low in the evening, and those of θ_f are flat in the daytime. In this case, the room air temperature increases easily and sufficiently because it dose not get so cold yet and the radiation from a stove dose not become so strong to the living space. And in every house during the coldest season, the varying patterns of both θ_c and θ_f are generally low in the morning and high in the evening. But with supplying a little heat at night or with reducing some heated rooms, those varying patterns become like the patterns in the early season of heating. The reason is supposed as follows. In the coldest season, as the temperature at night becomes so low, more heat supply is required in the morning, the sufficient warmth is not obtained by room air temperature but by only the direct radiation from a stove. And the supplying a little heat at night or the reducing some heated rooms is the response of living to the coldness existing the adjoining rooms or at the floor level, these patterns are supposed to be the results of the response to keep the human body suitably warm.
著者
長野 克則 横山 真太郎 濱田 靖弘 絵内 正道 藤田 巧
出版者
北海道大学
雑誌
基盤研究(B)
巻号頁・発行日
2004

(1)調湿材料の選択とその吸放湿特性:種々の天然調湿材料を比較検討した結果、価格対調湿効果の点で、稚内層珪質頁岩が優れた特性を有することがわかり、この稚内層珪質頁岩を建材や塗料に混入させた場合の静的および動的特性について実験的に明らかにした。(2)調湿機能を有する内装材を設置した実証実験:床面積7.5m^2の部屋の内壁23.2m^2部分に、稚内層珪質頁岩を1.92kg/m^2含有する石膏ボードを設置した場合と、普通石膏ボード表面に稚内層珪質頁岩を0.68kg/m^2含有する人工漆喰を塗布した場合について、日単位で加湿、除湿を繰り返した時のパッシブ調湿作用について検討した結果、両条件とも普通石膏ボード仕上げの場合に比べて、顕著な調湿作用を示した。(3)室内調湿効果予測のためのシミュレーターの開発:室内仕上げ材に調湿機能を持つ建材を導入した時の室内湿度を予測するシミュレーターを開発した。調湿建材の使用により、たとえば東京では梅雨時期にかび発生の危険域と言われる相対湿度90%以上となる時間を10分の一以下に減少できることが示された。(4)各種ガス吸着、調湿作用がある物質のVOC吸着・脱着特性に関する実験的検討:容量20Lの密閉チャンバー内を一定温湿度に保ち、トルエン、アセトアルデヒド、標準VOC7成分のそれぞれに対して稚内層珪質頁岩の吸着量を測定した。いずれのガスに対しても、稚内層珪質頁岩は活性炭とほぼ同等の吸着性能を持つことがわかった。一方、高温・低湿度環境下において、一度吸着したガスの脱着について測定したところ、アセトアルデヒドに関しては明らかに脱着が確認されたものの、トルエン、VOC7成分に関しては活性炭と同様に脱着は見られなかった。さらに、悪臭成分のアンモニアに対する最大吸着量を調べた結果、高い吸湿性能を有する稚内層珪質頁岩は水溶性のアンモニアの吸着に優れており、最大吸着量は活性炭の30倍以上となることが明らかにされた。
著者
佐藤 彰治 絵内 正道 横平 昭
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.69, no.581, pp.15-20, 2004
被引用文献数
3 1

Some regions along the coast in East Hokkaido have peculiar climates, with dense fog in summer and abundant sunshine in winter. The purpose of this paper is to propose how to effectively use a "sunroom" during summer and winter in these regions. Air temperature and humidity conditions were measured in both summer and winter within two detached houses in these regions containing a "sunroom". From these measurements, the following knowledge was acquired: 1) In summer, a large sunroom provides good environmental temperature conditions for a living room connected with it during the dense fog season. 2) In the case of a detached house built with a sunroom, it could be predicted that the heat loss through glazing doors situated between the living room and the sunroom greatly decreases in winter.