空港HVAC＆エネルギー回収：ターミナル消費エネルギーの削減

Why terminals are energy hotspots

Airports are among the most energy-intensive buildings in the commercial sector. Vast terminals run 24/7 with high fresh-air requirements, large glass facades, and constantly moving passenger loads. Heating and cooling the ventilation air alone can account for 40-60% of a terminal’s HVAC energy. Air-to-air heat recovery is the single highest-return measure to cut that load.

Why recovery matters here

ターミナルビルはトイレ、ラウンジ、コンコースを通じて膨大な量の調整空気を排出し、同時に同等量の外気を導入します。回収がなければそのエネルギーは無駄になります。ある ロータリー熱回収ホイール または一 プレート熱交換器 は、両ストリームが建物を出る前に、その間で顕熱（およびエンタルピー媒体を用いれば潜熱）エネルギーを移動させます。

Technology choices

• ロータリーウィール は、コンパクトな設置面積が重要となる極めて大きな風量（数万m3/h）に適しています。
• Plate exchangers は、給気と排気を厳密に分離すべき場合に推奨されます。
• ランアラウンドコイル ループは、給気と排気ダクトが離れている場合に使用されます。

Cold-climate note

暖房主体の空港では、排気側の着霜は現実的なリスクです。当社の以下のガイドをご覧ください： 熱回収のための防霜保護 パージセクターと予熱戦略について。

投資回収

エネルギーコストと炭素目標の上昇に伴い、ほとんどの空港改修プロジェクトは2〜4年で資本を回収します。システム監査から始め、年間平均ではなく設計外気条件に基づいて交換器を容量設計してください。

Terminal design favors zoned recovery rather than one large core. Group spaces by schedule and exhaust quality, mechanical rooms and lounges on their own loops, so each exchanger runs near its design point instead of averaging across very different loads. Demand-controlled ventilation, trimming outdoor air to occupancy, raises the recovered-energy fraction because the streams stay balanced. Coordinate recovery with the building management system so free cooling and heat recovery share the load by season. Security and fire compartments also shape duct routing, which is where run-around coils help when supply and exhaust shafts are far apart. Most airport programs pair an energy audit with a phased rollout to limit disruption to live terminals.

よくある質問

Which recovery type suits a large terminal?
Rotary wheels suit very large single airflows where footprint matters, while plate exchangers are preferred when supply and exhaust must stay strictly separated.

How is frost handled in cold climates?
Use purge sectors on wheels or pre-heat and defrost bypass on plates, sized to the winter design day rather than the annual average.

What payback can airports expect?
Most terminal retrofits recover capital in roughly two to four years, faster where heating degree days and operating hours are high.

よくある質問

Which recovery type suits a large terminal?

Rotary wheels suit very large single airflows where footprint matters, while plate exchangers are preferred when supply and exhaust must stay strictly separated.

How is frost handled in cold climates?

Use purge sectors on wheels or pre-heat and defrost bypass on plates, sized to the winter design day rather than the annual average.

What payback can airports expect?

Most terminal retrofits recover capital in roughly two to four years, faster where heating degree days and operating hours are high.