{"id":43332,"date":"2024-03-14T06:01:25","date_gmt":"2024-03-13T21:01:25","guid":{"rendered":"http:\/\/kochihen.replan.ne.jp\/?p=43332"},"modified":"2024-03-14T06:01:25","modified_gmt":"2024-03-13T21:01:25","slug":"%e3%80%90%e3%82%bc%e3%83%ad%e3%82%a8%e3%83%8d%e4%bd%8f%e5%ae%85%e3%81%b8%e3%81%aepv%e5%88%a9%e7%94%a8%e3%83%bb%e5%8c%97%e6%b5%b7%e9%81%93%e3%82%b9%e3%82%bf%e3%82%a4%e3%83%ab%e3%80%91","status":"publish","type":"post","link":"http:\/\/kochihen.replan.ne.jp\/?p=43332","title":{"rendered":"\u3010\u30bc\u30ed\u30a8\u30cd\u4f4f\u5b85\u3078\u306ePV\u5229\u7528\u30fb\u5317\u6d77\u9053\u30b9\u30bf\u30a4\u30eb\u3011"},"content":{"rendered":"

\"\"<\/a>
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English version\u2b07<\/p>\n

Hokkaido Style: Using PV for Zero-Energy Homes
\nStruggle for advanced insulation. Although the operating rate is generally less than 70% for roof-mounted PV, we are moving toward a concrete approach to PV “wall-mounted” installation. …<\/p>\n

The most important difference between Hokkaido and warmer regions in terms of housing policy is the endemic condition of snowfall.
\n\u3000Regarding energy for housing, the first houses in Hokkaido were heated by coal, which was mined in abundance from the early stages of development. The discovery of coal was a miracle for the development of Hokkaido in the Meiji era. The reason why Hokkaido Island has not been developed as a Japanese nation for so long is largely due to the fact that there was no concept of insulation in Japanese housing and no source of heating energy.
\n\u3000However, American engineers, with the help of pioneering ideas, discovered a coal mine near Yubari that had extremely abundant coal reserves on a global scale, and this provided an “energy source” for the pioneering work.
\n\u3000The opening of Japan’s railroad line between Otaru (Temiya) and Sapporo, following the line between Yokohama and Tokyo, and the fact that the first passenger on the line was the Emperor Meiji, who toured the area of Sapporo, is an indication of this. The inn where the Emperor Meiji stayed in Sapporo has been preserved.
\n\u3000For the Japanese nation, the discovery and mining of coal may be said to have marked a breakthrough in Hokkaido management.
\n\u3000It can also be said that the heating of houses in Hokkaido and the advancement and development of the living environment have been Japan’s long-cherished aspiration since the Meiji era. This is the biggest reason why Japan has continued to crush the southward ambitions of Russia, the aggressor nation. It can be said historically that the reason why the recent invasion of Ukraine has not been carried out against Hokkaido was largely due to the success of such Hokkaido development.
\n\u3000Indeed, Hokkaido’s housing technology is inextricably linked to this. I personally believe that when the history of Japan progresses a little further, this will be clearly stated in history.
\n\u3000After such a star-studded history, today, the energy issue has taken on a different aspect.
\n\u3000Today, the use of photovoltaic or PV power generation has been established as one direction. While we still have the problem of what to do about the disposal of these panels after they deteriorate over time, it has become common sense as a major directional choice.
\n\u3000This is very troubling for Hokkaido.
\n\u3000The question is how to maintain the snow-covered roof with PV panels on it. When this topic was raised at the Hokkaido Housing Advisory Council meeting, there was a sense of “are we finally being forced to do something about it? It was from such discussions that the specific idea of “wall installation” gained momentum. Needless to say, energy efficiency would be lower than roof-mounted systems, but the system would be free from the need to deal with snow accumulation. The other requirements are location and other conditions.
\n\u3000The “Zero Carbon Village” in Minamihoro this time presented a model plan reflecting such discussions. It is the result of efforts to achieve this kind of “optimal solution” in difficult climatic conditions.
\n\u3000
\n\u3000<\/p>\n","protected":false},"excerpt":{"rendered":"

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