ASHRAE 55 and Thermal Comfort
ASHRAE 55 defines acceptable thermal environments through the PMV or PPD model, balancing air temperature, mean radiant temperature, humidity, air speed and clothing. Heat recovery changes supply-air conditions, so it must be designed without degrading comfort.
Humidity and IEQ
Enthalpy recovery transfers moisture as well as heat, helping hold indoor relative humidity in the 30 to 60 percent comfort band and limiting mould and virus survival. Sensible-only plates keep moisture separate, which is useful where winter humidity is already low.
Ventilation, Energy and Comfort Together
Recovery lets designers meet ASHRAE 62.1 ventilation rates without a severe energy penalty, so comfort and indoor air quality no longer trade off against the utility bill. 26YC exchangers are selected to hold supply temperatures within ASHRAE 55 comfort limits across the heating and cooling seasons.
Design Checks for Comfort
- Confirm supply-air temperature stays within ASHRAE 55 limits in both heating and cooling seasons after recovery is applied.
- Hold indoor relative humidity near 30-60%; enthalpy recovery helps in humid zones, sensible plate helps where winter humidity is low.
- Keep ventilation at ASHRAE 62.1 rates; recovery removes the energy excuse for cutting fresh air.
- Verify the recovery core does not raise supply-air speed beyond draught limits.
よくある質問
Does heat recovery hurt thermal comfort?
Done right it improves comfort by holding stable supply temperatures and humidity instead of dumping cold or hot untreated air.
What indoor humidity should I target?
Roughly 30-60% RH; enthalpy wheels help in humid climates, sensible plates suit dry winter conditions.
Which standard governs ventilation rates?
ASHRAE 62.1 for ventilation, ASHRAE 55 for thermal comfort; recovery lets you meet both without a large energy penalty.
よくある質問
Does heat recovery hurt thermal comfort?
Done right it improves comfort by holding stable supply temperatures and humidity instead of dumping cold or hot untreated air.
What indoor humidity should I target?
Roughly 30-60% RH; enthalpy wheels help in humid climates, sensible plates suit dry winter conditions.
Which standard governs ventilation rates?
ASHRAE 62.1 for ventilation, ASHRAE 55 for thermal comfort; recovery lets you meet both without a large energy penalty.
適切な熱交換器を選定
当社のエンジニアが風量、温度、圧力損失の予算に合わせてコアを設計し、用途に応じて板式・回転式・ヒートパイプ回収を選定します。以下をお読みください： 熱交換器ガイド 、または仕様についてお問い合わせください。
関連製品
HVAC および換気向けの板式・回転式・ヒートパイプ回収。
空気と液体用の大表面積固定コア。
大風量向け高効率エネルギー回収。
清浄用途向けの受動的・完全分離流。