Two streams, one box
Every recovery device brings exhaust and supply into one casing. The question is whether they can mix. Leakage is the fraction of one stream that escapes into the other through seals, the matrix or carryover.
How the technologies compare
- プレート（顕熱）: streams separated by solid walls; leakage is only through perimeter seals, effectively zero mixing.
- ヒートパイプ: also fully separated – ideal for dirty or hazardous exhaust.
- Rotary wheel: matrix is shared, so some carryover is unavoidable; a purge sector reduces but does not remove it.
The selection rule
For laboratories, hospitals and any space where exhaust must never reach supply, specify separated sensible recovery (plate or heat pipe). Wheels are excellent for clean commercial air but not for contaminant isolation – this is a core part of the application-based selection discipline.
Frequently asked questions
Can a wheel be made zero-leak? No – the rotating seal always passes a little; purge minimises carryover but cannot guarantee isolation.
Does plate leakage matter? Only at the perimeter gasket; a well-built plate core keeps streams essentially separate.
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
How does a plate exchanger avoid cross-contamination?
Separate channels keep the two air streams physically divided by thin plates, so there is no mixing except tiny leakage through seals or defects.
When is leakage acceptable versus dangerous?
Small leakage is fine for clean indoor-to-indoor streams, but for lab, kitchen or toilet exhaust where contaminants are present, even small leakage is unacceptable and separated cores or run-around coils are required.
よくある質問
How does a plate exchanger avoid cross-contamination?
Separate channels keep the two air streams physically divided by thin plates, so there is no mixing except tiny leakage through seals or defects.
When is leakage acceptable versus dangerous?
Small leakage is fine for clean indoor-to-indoor streams, but for lab, kitchen or toilet exhaust where contaminants are present, even small leakage is unacceptable and separated cores or run-around coils are required.
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。