Static vs total pressure
Total pressure is the full energy of the moving air; static pressure is the usable pushing force after velocity energy is set aside. Fans are classed by the static pressure they can develop against a system – and the recovery core is one of the biggest resistances in that system.
Core pressure drop sets the fan
その 圧力損失 across a recovery core (driven by 面風速) must be overcome by the supply and exhaust fans. A higher-effectiveness, smaller core raises pressure drop and pushes the fan into a higher static-pressure class – more motor power and more noise. Selection balances recovery gain against fan penalty.
Why EC fans change the equation
EC (electronically commutated) fans hold efficiency at part load, so a recovery system with variable flow keeps its fan energy low even when the core drop is significant. In a retrofit or AHU upgrade, pairing recovery with EC fans captures both the heat saving and the fan saving.
Frequently asked questions
Is static pressure the same as pressure drop? The core pressure drop is the static pressure the fan must supply across that component; total system loss is the sum of all components.
Does a bigger core avoid the fan penalty? Yes, at the cost of size and material; the optimum is found by lifecycle cost, not by minimising either alone.
Need help specifying the right air-to-air heat recovery for your project? Contact the QIYU engineering team – WhatsApp +86 157 5335 5505, or email kuns913@gmail.com.
よくある質問
What is fan static pressure class?
It groups fans by the static pressure they can deliver, such as low, medium or high pressure, which must match the duct and exchanger pressure drop.
Why must the fan match the recovery core?
Undersized static pressure starves airflow and cuts effectiveness; oversized wastes fan power, so the fan curve must clear the core's operating pressure drop at design flow.
よくある質問
What is fan static pressure class?
It groups fans by the static pressure they can deliver, such as low, medium or high pressure, which must match the duct and exchanger pressure drop.
Why must the fan match the recovery core?
Undersized static pressure starves airflow and cuts effectiveness; oversized wastes fan power, so the fan curve must clear the core's operating pressure drop at design flow.
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。