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Reducing Operational Carbon Emissions from Urban Residential Buildings with Improved Green Building Efficiency Standards

グリーンビル効率基準の改善による都市住宅の運用時炭素排出削減 (AI 翻訳)

Qiang Liu, Nana Deng

Buildings📚 査読済 / ジャーナル2026-05-29#エネルギー転換Origin: CN
DOI: 10.3390/buildings16112198
原典: https://doi.org/10.3390/buildings16112198

🤖 gxceed AI 要約

日本語

中国の都市住宅の運用時炭素排出削減について、ボトムアップモデルを用いて地域別・時期別の対策シナリオの費用対効果を分析。グリーンビル効率基準の統合的改善により、2060年の排出量をBAU比63.7%削減可能。非暖房地域では冷房基準の向上が、暖房地域では熱供給構造の最適化が最大の削減効果をもたらす。調理の電化が最も低コストで、エンベロープ改修は初期投資が高いが長期的なリターンがある。

English

This study uses a bottom-up framework to evaluate emission reduction potentials and costs for decarbonizing China's urban residential building operations. An integrated pathway of improving green building efficiency standards could reduce 2060 emissions by 63.7% below BAU. Cooling standard upgrades offer the highest reduction in non-heating areas, while heat structure optimization leads in heating areas. Cooking electrification has the lowest marginal cost, and envelope retrofits yield long-term returns despite high upfront investment.

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

日本でも建物の脱炭素化が急務であり、本論文の地域別・費用対効果分析の手法は、日本の住宅政策（省エネ基準・ZEH等）の強化に示唆を与える。ただし中国の気候・建築特性に基づくため、直接適用には注意が必要。

In the global GX context

This paper provides a detailed, region-specific cost-effectiveness analysis of building decarbonization measures, contributing to global knowledge on operational carbon reduction in urban residential buildings. Its framework can inform countries like Japan that are enhancing building efficiency standards to meet net-zero targets.

👥 読者別の含意

🔬研究者:Offers a comprehensive bottom-up modeling approach for building sector decarbonization with regional and temporal granularity.

🏢実務担当者:Provides insights into cost-optimal measures (e.g., cooking electrification, envelope retrofits) that could inform building efficiency upgrades.

🏛政策担当者:Highlights the importance of region-specific standards and policy support to achieve cost-effective decarbonization of the building stock.

📄 Abstract（原文）

Decarbonizing China’s urban operational residential buildings is essential for carbon neutrality and sustainable building energy systems. However, regional variations in the effectiveness and costs of low-carbon measures for urban residential buildings remain unclear, limiting policy pathway design. We employ a bottom-up framework to evaluate emission reduction potentials and costs across scenarios, aiming to identify region-specific and time-specific strategies for urban residential building operations. An integrated pathway of improving green building energy efficiency standards could reduce 2060 emissions from urban residential operations to 535 MtCO2, 63.7% below the business-as-usual (BAU) level in 2060. In non-heating areas, cooling standard upgrade offers the largest reduction potential (18.1% of total reduction). In heating areas, heat structure optimization contributes the largest reduction, 207 MtCO2. From a cost-optimal perspective, cooking electrification offers the lowest marginal cost, declining to 9 CNY/tCO2 by 2060. Improving envelope retrofit standards requires high upfront investment but yields long-term returns, with costs potentially falling by 63% under policy support. By integrating regional mitigation potential with cost-effectiveness analysis, this study provides a roadmap for decarbonizing China’s urban residential building operations that supports climate goals and promotes sustainable living.

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