Answer a few questions about your airflow, temperature range and contamination constraints and the selector returns a recommended core type with the engineering reason behind it. It encodes the boundaries that matter in practice: mines, pharmaceutical cleanrooms and contaminated exhaust need separated cores rather than a rotary wheel; data centres favour plate or indirect evaporative cooling; drying exhaust humidity recovery is sensible-only; boiler flue gas needs a condensing or white-plume-abatement stage.
Answer two steps and get an engineering recommendation. Rules follow QIYU field practice for mines, data centers, drying, pharma, commercial and boiler duties.
Step 1 — Your application
Step 2 — Duty details
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Share your airflow, supply/exhaust temperatures and exhaust description — we will confirm the core, freeze protection and pressure budget.
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These results are a first-pass screening aid. Confirm the duty point against certified test data (EN 308 / AHRI 1060), the applicable energy code, and the manufacturer datasheet before issuing a purchase specification. For a verified sizing, send us your airflow and temperatures.
Frequently asked questions
Why not use a rotary wheel for mine or contaminated exhaust?
A rotary wheel physically carries a slice of exhaust air into the supply stream every revolution. With mine air, dust, fumes or pathogens that means re-entraining contaminants into the fresh-air side. Mines, pharma and contaminated exhaust use a separated core (heat pipe or plate) with zero mixing.
Why avoid a wheel in data centers?
Data centers and clean rooms need strict isolation between return and supply and very low maintenance risk. A wheel adds a motor, a seal and a small leakage path. Plate cores or indirect evaporative (IEC) cooling give isolation and predictable pressure with no rotating part.
Why is drying exhaust recovery plate-only?
Drying exhaust is hot, humid and often laden with particulates or odors. The goal is sensible heat recovery without moving moisture or contaminants back. A sensible plate core recovers heat with fully separated streams and tolerates the dirty duty.
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Related: type comparison matrix, 用途別選定, request a verified sizing · all heat recovery tools.