断熱工法の異なる高断熱住宅の運用炭素と体現炭素を含むLCCO2の比較

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides a methodology for comparing LCCO2 of different insulation construction methods, useful for life cycle assessment studies.

🏢実務担当者:Helps construction companies and architects select insulation methods that minimize life cycle CO2 emissions.

🏛政策担当者:Informs building code revisions by quantifying the carbon impact of insulation choices, supporting ZEH/ZEB targets.

LCCO2は、建築材料の調達から廃棄に至るまでのCO2排出量の総量であり、建物の運用時に発生する運用炭素だけでなく、材料の製造、輸送、建設、改修、廃棄時に発生する体化炭素についても議論が進められている。運用炭素については、エネルギー使用に関するシミュレーション手法や基準が確立されており、ZEHやZEBの普及を目的とした評価が進められている。しかし、体化炭素については、建物のライフサイクルの各段階における様々な実態を把握する必要があり、推定方法や削減方法の確立が検討されている。体化炭素については、建物の材料消費に注目が集まっているが、建設や解体に伴う建築材料や建設活動など、実際の建設を想定した詳細な項目からの算定方法を検討することも重要である。特に、同じ材料を使用しても施工方法が異なることで体化炭素の削減を目指すことが可能であり、今回は施工方法の違いに着目した。本研究では、断熱施工方法が異なる小規模住宅モデルのLCCO2を比較し、CO2排出量の削減に最も効果的な施工方法を検討した。また、建物の断熱性能を向上させ、冷暖房のエネルギー消費を削減するために断熱材に着目し、建物のLCCO2削減効果を算定した。断熱パネルを用いた施工方法がLCCO2削減に最も効果的であった。また、建物解体後に分離ができない施工方法は、リサイクル資源として利用できないため不利であった。

AI 翻訳（deepseek-v4-flash）。 正確を期す場合は下の原文を参照してください。

Regarding LCCO2, which is the total amount of CO2 emissions resulting from the procurement of building materials to their disposal, discussions are underway not only on operational carbon, which is generated during the operation of a building, but also on embodied carbon, which is generated during the manufacturing, transportation, construction, renovation, and disposal of materials. Regarding operational carbon, simulation methods and standards for energy use have been established, and their evaluation is progressing with the aim of promoting ZEH and ZEB. However, regarding embodied carbon, it is necessary to understand the various actual situations at the stages of a building’s life cycle, and the establishment of estimation methods and reduction methods are under consideration. Regarding embodied carbon, attention has been focused on the material consumption of building, but it is also important to consider a method of calculation from detailed items assuming actual construction, such as building materials and construction activities associated with construction and demolition. In particular, it is possible to aim to reduce embodied carbon by using different construction methods even though the same materials are used, and this time we focused on the differences in construction methods. In this study, we compared the LCCO2 of small-scale housing models with different insulation construction methods to examine the construction method that is most effective in reducing CO2 emissions. In addition, we focused on insulation materials to improve the insulation performance of buildings, thereby reducing energy consumption for heating and cooling, and calculated the LCCO2 reduction effect of buildings. The construction method using insulation panels was the most effective in reducing LCCO2. In addition, construction methods that do not allow separation after the building is demolished were at a disadvantage because they could not be used as recycled resources.

• semanticscholar https://doi.org/10.1088/1755-1315/1582/1/012029first seen 2026-06-29 06:30:36 · last seen 2026-09-22 05:11:11