gxceed
← 論文一覧に戻る

Energy Performance of Existing Italian Residential Buildings: Retrofitting Scenarios with Hybrid Solutions

既存イタリア住宅のエネルギー性能：ハイブリッドソリューションによる改修シナリオ (AI 翻訳)

Domenico Palladino, Silvia Di Turi, Iole Nardi, Nicolandrea Calabrese

Buildings📚 査読済 / ジャーナル2026-05-01#エネルギー転換Origin: EU
DOI: 10.3390/buildings16091812
原典: https://doi.org/10.3390/buildings16091812

🤖 gxceed AI 要約

日本語

本研究は、イタリアの住宅ストックを対象に、ヒートポンプとガスボイラーのハイブリッド暖房システムによる改修効果を大規模数値シミュレーションで評価。非再生可能一次エネルギーを最大44%、CO2排出量を最大58%削減する一方、総一次エネルギーは2～26%増加。中間気候帯で最大効果を示し、過渡期の脱炭素技術として頑健な性能を確認。

English

This study evaluates hybrid heating systems (heat pump + gas boiler) for retrofitting Italian residential buildings via large-scale simulation. Non-renewable primary energy reduces 39-44% and CO2 emissions 50-58%, though total primary energy increases 2-26% due to renewable contribution. Operational cost savings range 25-40%. Hybrid systems prove robust as mid-term transition technologies, especially in intermediate climate zones.

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

イタリアの事例だが、日本でも既存住宅の脱炭素化が急務であり、ハイブリッドシステムは完全電化が困難な地域での過渡的技術として参考になる。日本の気候帯や住宅構造に合わせた追加検討が必要だが、本論文のシミュレーション手法は応用可能。

In the global GX context

This paper provides quantitative evidence for hybrid systems as transition technologies in building decarbonization, relevant globally where full electrification faces constraints. The Italian building stock resembles many European countries, offering transferable insights for retrofit policy and hybrid system design.

👥 読者別の含意

🔬研究者:Offers a robust simulation methodology and baseline performance data for hybrid retrofits across climate zones, valuable for building energy modeling and transition pathway research.

🏢実務担当者:Provides comparative energy, CO2, and cost data to inform retrofit strategy decisions, especially for climates where hybrid systems outperform full electrification.

🏛政策担当者:Demonstrates that hybrid systems can significantly reduce emissions without full electrification, suggesting policy support for bridge technologies in building decarbonization.

📄 Abstract（原文）

The decarbonization of existing buildings remains a major challenge, particularly in contexts characterized by high energy demand and heating systems based on fossil fuels. While electrification is widely recognized as a key pathway, its direct application is often limited by building and operating conditions. This study investigates the potential of hybrid heating systems as transitional solutions through a large-scale numerical parametric simulation analysis based on representative models of the Italian residential building stock. The analysis explores the interaction between climatic conditions, system operation, and energy performance under standardized assumptions. The results reveal that hybrid systems achieve significant reductions in non-renewable primary energy (up to 39–44%) and CO2 emissions (approximately 50–58%), primarily through the substitution of natural gas with electricity. Conversely, total primary energy may increase (approximately 2–26%) due to the contribution of renewable energy associated with heat pump operation. Operating cost savings are observed in the 25–40% range, with slight variation depending on climatic conditions. The effectiveness is not uniform, with maximum benefits in intermediate climate zones and reduced performance under more severe conditions. Overall, hybrid systems show stable and reliable performance across heterogeneous building configurations, supporting their role as robust mid-term transition technologies toward building decarbonization.

🔗 Provenance — このレコードを発見したソース

🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。

gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。