{"id":37186,"date":"2022-06-25T06:40:28","date_gmt":"2022-06-24T21:40:28","guid":{"rendered":"http:\/\/kochihen.replan.ne.jp\/?p=37186"},"modified":"2022-06-28T18:48:01","modified_gmt":"2022-06-28T09:48:01","slug":"%e3%80%90%e7%9c%81%e3%82%a8%e3%83%8d%e6%96%b0%e5%9f%ba%e6%ba%96%e3%83%bb%e6%9c%80%e4%b8%8a%e4%bd%8d%e7%ad%89%e7%b4%9a%ef%bc%97%e3%80%80%e3%81%95%e3%81%a6%e5%af%92%e5%86%b7%e5%9c%b0%e3%81%a7%e3%81%af","status":"publish","type":"post","link":"https:\/\/kochihen.replan.ne.jp\/?p=37186","title":{"rendered":"\u3010\u7701\u30a8\u30cd\u65b0\u57fa\u6e96\u30fb\u6700\u4e0a\u4f4d\u7b49\u7d1a\uff17\u3000\u3055\u3066\u5bd2\u51b7\u5730\u3067\u306f\uff1f\u3011"},"content":{"rendered":"

\"\"<\/a>
\n\"\"<\/a>
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\n\u307e\u3041\u3057\u304b\u3057\u3001\u73fe\u5b9f\u306f\u3053\u306e\u3088\u3046\u306b\u9032\u884c\u3057\u3066\u3044\u308b\u306e\u3067\u5bfe\u5fdc\u3057\u3066\u884c\u304f\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n

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\n\u304b\u306a\u308a\u8996\u754c\u4e0d\u900f\u660e\u3067\u306f\u306a\u3044\u304b\u3068\u3044\u3046\u5370\u8c61\u3092\u6301\u3063\u305f\u6b21\u7b2c\u3002\u30fb\u30fb\u30fb<\/p>\n

English version\u2b07<\/p>\n

New Energy Conservation Standard, Highest Grade 7, Now in Cold Regions?
\nThe cold region housing market has pioneered energy-saving insulation methods and achieved cost reductions through mass construction. Now, with the Grade 7 standard, we are once again at the “cutting edge of the issue. …<\/p>\n

Amidst the social blockage caused by infectious diseases and the lack of normal communication
\nThe Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has announced new energy conservation grade standards
\nThe Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has announced new energy efficiency rating levels 6 and 7, which were also passed by the Diet.
\nHow will “public opinion” in the building industry react to this situation?
\nWith the storm pressure of blaming others due to infectious diseases still in place, it is difficult to know how the public will react.
\nThe opportunity for a free and vigorous exchange of opinions has not yet resumed.
\nIn essence, I think that the renewal of national standards requires a more liberal environment for dialogue.
\nWell, however, the reality is that this is the way things are progressing, and we need to deal with it.<\/p>\n

In cold climates, free traffic is limited and housing-related group meetings are not being held.
\nFinally, meetings of housing-related organizations have begun to sprout from around June.
\nIn Hokkaido, the Earth 21 meeting will be held next week as a hybrid of real and Zoom.
\nThe Shinjyukyo Sapporo Chapter also held a “site tour” only last week.
\nNaturally, the free exchange of opinions on the renewal of the energy efficiency rating, the highest rating of 7, has yet to take place.
\nThe New Jyukyo Kansai Branch is also holding a hybrid meeting of real life and Zoom.
\nIn the meantime, the June study meeting of the Shinjyukyo Kansai Branch was held.
\nI was able to listen to a lecture by Representative Director Norihiko Kamata for the first time in a while.
\nThe lecture was about the new Grade 7 standard and the corresponding heat insulation methods.
\nSince it was a study session of the Kansai Branch, basically the methods to be used in warm regions were discussed.
\nHowever, I was naturally interested in the insulation methods for the first two cold regions.
\nThe lecture was based entirely on charts and mathematical formulas.
\nIn the lecture, he showed the exterior wall configuration for cold regions as shown in the figure.
\nAlthough it is just a suggestion, in Hokkaido, the corresponding method is to have a wall thickness of over 300 mm.
\nIt is assumed that the thickness of the insulation is 210 + 100 mm, and the exterior is applied on the outside of the insulation.
\nThe wall thickness would normally be over 350mm.
\nAssuming a simple 4-ken square 16 tsubo flat house, this means that the insulation wall is equivalent to an area of approximately 3 tsubo.
\nIt means that the insulation wall is equivalent to about 3 tsubo area. The ratio is 100:18.75.
\nThe German standard of “passive house” is now considered to be almost impossible in Hokkaido.
\nThe German standard of “Passive House” is no longer considered a viable option in Hokkaido. This is the common-sense reaction of the cold-region housing market.
\nAt least in Sapporo, the largest consumption area in Japan, where the urban environment and small lot sizes are progressing, the percentage of exterior walls occupied by houses is close to 20%.
\nThe market reaction is that an exterior wall occupancy rate of nearly 20% is unrealistic, at least in Sapporo, the largest consumption area in Japan, where urban environments and small lot sizes are progressively being developed.
\nPeople do not build houses to build exterior walls.
\nThey build houses to live happily, not for the sake of standards.
\nIn addition, Dr. Kamada’s speech showed that the cost increase to comply with this standard would have to be quite large, and that the support of users would be very important.
\nThe cost increase to comply with this standard would have to be quite large, and he wondered whether he would be able to gain the support of users.
\nThe area itself is at the forefront of the issue. The region itself is at the forefront of the issue.<\/p>\n

It is meaningful to induce standards that improve housing performance in warmer regions.
\nIf houses with insulation specifications that are commonly built in Hokkaido are built in warmer regions, it is easy to achieve the highest grade 7.
\nthe highest grade 7 can be easily achieved. The cold-region market is leading the way, and there is cost rationality in achieving this.
\nOn the other hand, however, I have the impression that users in cold regions may not be so sure about how they will react to the new standard.
\nI have the impression that the market in cold regions is not very clear. …<\/p>\n","protected":false},"excerpt":{"rendered":"

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