Start With the Duty

Plate exchangers are stationary, no-moving-parts cores. Selection begins with supply and exhaust airflow, indoor and outdoor design temperatures, and the allowable supply-air temperature.

Key Selection Parameters

• Face area - larger area at lower face velocity gives higher effectiveness
• Configuration - counterflow (70-75 percent) outperforms crossflow (60-65 percent)
• Material - aluminium for cost, polymer or epoxy-coated for corrosive or hygiene duty
• Separators - brazed, bonded, or welded depending on pressure and temperature

Sizing Rule of Thumb

Pick a target effectiveness (often 70 percent), then size the core so face velocity stays in the manufacturer's recommended band. Too high a velocity lowers effectiveness and raises fan power.

When Plate Is the Right Choice

• You want zero moving parts and minimal maintenance
• Air streams must stay fully separated (labs, hospitals)
• Sensible-only recovery is sufficient for your climate

Verify

Confirm the selection against an EN 308 or AHRI 1060 rating at your actual operating point, and check the added pressure drop against your fan's capability.