Decarbonization Assessment of External Wall Systems: Thermal Transmittance and Cradle-to-Gate Embodied Carbon Comparison of Conventional and Modular Configurations
外壁システムの脱炭素評価：従来型とモジュール型の熱貫流率とゆりかごからゲートまでの体積炭素比較 (AI 翻訳)
Anita Terjék, Klára Tóthné Szita, Viktoria Mannheim
🤖 gxceed AI 要約
日本語
本論文は、ハンガリーの代表的な住宅を対象に、3種類の外壁構成（無断熱レンガ壁、ETICS断熱補強壁、SIPモジュール壁）の熱貫流率とゆりかごからゲートまでの体積炭素を比較した。結果、SIP構成が最も低い熱貫流率と体積炭素を示し、早期設計段階での脱炭素判断に有用な知見を提供する。
English
This paper compares three external wall configurations (uninsulated masonry, ETICS retrofitted, and SIP modular) for a typical Hungarian house, evaluating thermal transmittance and cradle-to-gate embodied carbon. The SIP system achieves the lowest U-value and embodied carbon, supporting early-stage decarbonization decisions in building design.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では既存住宅の断熱改修やZEH推進が進む中、外壁システムの体積炭素まで考慮した比較は稀である。本論文の方法論は、日本の住宅ストック改修やLCCM住宅設計における材料選択の参考となる。
In the global GX context
While most building energy studies focus only on operational energy, this paper highlights the importance of embodied carbon in wall systems. The findings are relevant for global building decarbonization efforts, especially in regions with large post-war housing stocks requiring retrofit.
👥 読者別の含意
🔬研究者:Methodology for comparing thermal and embodied carbon at component level can be adapted to other building typologies and climates.
🏢実務担当者:Use the comparative results (especially SIP vs. ETICS) to guide early-stage design choices for low-carbon building envelopes.
🏛政策担当者:The study supports updating building energy codes to include embodied carbon limits, not just operational energy performance.
📄 Abstract（原文）
Improving the environmental performance of ageing residential buildings requires design strategies that consider both thermal performance and material-related embodied impacts. This study provides early-stage, wall-level comparative evidence on the decarbonization potential of alternative external wall assemblies. A representative Hungarian “Kádár” Cube house is used as a reference to evaluate three configurations under identical geometric and climatic conditions: (i) the original uninsulated masonry wall, (ii) a masonry wall retrofitted with an External Thermal Insulation Composite System (ETICS), and (iii) a modular wall system based on Structural Insulated Panels (SIPs) applied in a morphology preserving reconstruction scenario. The analysis combines steady-state thermal transmittance (U-value) calculations with a cradle-to-gate (A1–A3) embodied-carbon assessment. Results show that both ETICS and SIP solutions substantially reduce heat loss compared to the baseline wall. The SIP configuration achieves the lowest U-value and cradle-to-gate embodied carbon due to its lightweight structure and reduced material mass. As the study focuses exclusively on wall-level A1–A3 impacts and steady-state thermal indicators, the findings support early design-stage decision-making rather than full building-level decarbonization modelling. The results highlight the importance of jointly considering thermal-transmittance performance and embodied impacts when comparing retrofit and modular reconstruction options for ageing residential buildings.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/en19133159first seen 2026-07-04 05:19:18
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