A cotton mill exhausts 90,000 m3/h of stenter air at about 130 C and high humidity. EN159 recovered both heat and moisture with a rotary enthalpy wheel.
The Challenge
Stenter exhaust carried large latent and sensible heat. Recovering it would cut steam for the stentering process and preheat incoming air. Textile duty is not a forbidden sector, so a high-effectiveness wheel is appropriate.
Why Rotary Air-to-Air Recovery
For high-volume, high-temperature textile stenter exhaust, a rotary enthalpy wheel gives the highest total-heat effectiveness (sensible plus latent). Streams are clean enough that wheel transfer is acceptable. A plate unit is offered where fibre load is high.
The EN159 Solution
EN159 rotary wheel, 90,000 m3/h, total effectiveness 75 percent, wash-coated aluminium matrix with an automatic purge sector to limit cross-leakage.
Measured Results
- Recovered heat: about 2.0 MW
- Incoming air preheated and humidified toward process setpoint
- Steam use cut by 27 percent
- Estimated payback: 14 months
Compliance and Selection Notes
Rotary wheel allowed for textile stenter duty (not a forbidden sector). Purge sector limits supply/exhaust leakage. Plate alternative offered for fibre-heavy lines.
Frequently Asked Questions
Is a rotary wheel safe for textile?
Yes for general stentering; textile is not a forbidden sector. A purge sector controls leakage. Fibre-heavy lines may use plate instead.
Why not plate here?
At 90,000 m3/h and 130 C with high humidity, the wheel recovers latent heat too, giving higher total savings.
Related Guides and Tools
Rotary Heat Exchangers · Textile Stenter Heat Recovery · Drying Heat Recovery · Textile Heat Setting Plate · Shaping Machine Exhaust · Contact EN159
Get a Site-Specific Recovery Estimate
Talk to an EN159 application engineer about your cotton stenter exhaust stream. Call 15753355505 or visit our contact page for a site-specific recovery estimate.