目次
- Factor Enthalpy Wheel Membrane Moving parts Yes (motor, seals) No Air cross-contamination Small (seal leakage) None (separate streams) Latent effectiveness 70–85% 60–80% Frost risk (cold exhaust) Yes Lower Maintenance Bearings, seals, frost Occasional cleaning
- Wheel: high latent recovery, tolerant of slight leakage, easy service access — see desiccant wheel vs energy recovery wheel. Membrane: critical ventilation, labs, hospitals, or anywhere cross-contamination is unacceptable — see membrane energy recovery ventilation.
- Wheels need the checks in energy recovery wheel troubleshooting. Membranes mainly need periodic inspection for fouling. Both reduce the cooling and heating loads sized in AHU selection calculation, so the recovery device should be selected before the coil.
Choosing between an enthalpy recovery wheel and a membrane exchanger comes down to contamination risk, maintenance tolerance, and how much latent recovery you need. This comparison distills the trade-offs.
| Factor | Enthalpy Wheel | Membrane |
|---|---|---|
| Moving parts | Yes (motor, seals) | No |
| Air cross-contamination | Small (seal leakage) | None (separate streams) |
| Latent effectiveness | 70–85% | 60–80% |
| Frost risk (cold exhaust) | Yes | Lower |
| Maintenance | Bearings, seals, frost | Occasional cleaning |
- Wheel: high latent recovery, tolerant of slight leakage, easy service access — see desiccant wheel vs energy recovery wheel.
- Membrane: critical ventilation, labs, hospitals, or anywhere cross-contamination is unacceptable — see membrane energy recovery ventilation.
Wheels need the checks in energy recovery wheel troubleshooting. Membranes mainly need periodic inspection for fouling. Both reduce the cooling and heating loads sized in AHU selection calculation, so the recovery device should be selected before the coil.