Experimental investigation of a cross-flow heat recovery unit in an air handling unit: energy performance, life cycle assessment, and carbon footprint analysis
空調システムにおけるクロスフロー熱回収ユニットの実験的調査：エネルギー性能、ライフサイクルアセスメント、カーボンフットプリント分析 (AI 翻訳)
Hakan Tutumlu, Cuma Karataş
🤖 gxceed AI 要約
日本語
本論文は、空調システムに組み込まれたクロスフロープレート式熱回収ユニットの実験的性能評価とライフサイクルアセスメントを行った。4つの運転モード（暖房、加湿暖房、冷房除湿、再加熱冷房）での試験により、風速1.1～3.6m/sの範囲で温度効率とCOPを測定。熱回収による暖房負荷の129%カバーや冷房COP2.52～5.04を確認。トルコの排出係数を用いたLCAでは年間6,136kgCO2eqの削減を試算した。
English
This paper experimentally investigates a cross-flow plate heat recovery unit in an air handling unit under four operating modes. Results show temperature effectiveness decreases with velocity, while heat recovery covers up to 129% of heating demand. Cooling COP ranges from 2.52 to 5.04. A life cycle assessment using Turkey's grid emission factor estimates annual CO2 savings of 6,136 kgCO2eq.
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
日本の建築物省エネ基準では熱回収の導入が進んでおり、本論文の実験方法と成果は日本の空調システム設計の参考になる。ただし、排出係数はトルコのものを使用しており、日本への直接適用には調整が必要。
In the global GX context
The experimental results and LCA framework are relevant for global building energy efficiency, particularly for heat recovery systems. The methodology can be adapted to different grid emission factors, making it applicable to countries like Japan.
👥 読者別の含意
🔬研究者:Provides experimental performance curves for cross-flow HRU across varying velocities and operation modes, useful for validating building energy models.
🏢実務担当者:Offers efficiency and COP values that can inform the design of energy-efficient HVAC systems and heat recovery sizing.
📄 Abstract（原文）
Heat recovery units (HRUs) embedded in air handling units (AHUs) represent one of the most straightforward yet effective strategies for curtailing building energy consumption, which accounts for roughly 30-40% of global final energy use. Despite a well-established theoretical foundation, experimental studies spanning multiple operating modes-particularly when combined with life cycle and carbon footprint assessments-remain relatively scarce for cross-flow plate configurations. This paper reports laboratory experiments conducted on the educational Air Handling Unit (AHU) test cycle, which features a cross-flow plate HRU, under four distinct conditioning modes: (1) heating only, (2) humidification combined with heating, (3) cooling with dehumidification, and (4) cooling with dehumidification followed by reheating. Dry-bulb temperature and relative humidity were measured at seven stations along the air path, enabling full psychrometric energy balances following. Air velocity was varied over 1.1-3.6 m/s to assess its influence on HRU temperature effectiveness ( ), thermal output, and Coefficient of Performance (COP). Results show that decreases from 0.792 to 0.671 as velocity increases in heating mode, while the fraction of total heating demand covered by heat recovery reaches 129% at the highest velocity tested. COP of cooling ranges from 2.52 to 3.37 in Mode 3 and rises to 3.21-5.04 in Mode 4. A simplified operational life cycle assessment (ISO 14040:2006; ISO 14044:2006) using Turkey’s national grid emission factor (0.452 kgCO₂eq/kWh) yields annual CO₂ savings of approximately 6,136 kgCO₂eq.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.24012/dumf.1924722first seen 2026-07-30 05:40:10
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