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Massive energy savings for three Italian producers
12
Jul '11
Figures recently released by three Italian textile producers identify significant energy savings with reduced gas consumption, directly attributed to Monforts heat recovery system and fitted as standard on the Monforts Textilmaschinen GmbH & Co. KG's Montex 6500 stenters.

Significant energy savings, with reduced gas consumption, have been made by three Italian textile producers – Giovanni Clerici & Figli SpA, TMR Cederna and Tintea - thanks to the heat recovery system fitted to their Montex 6500 stenters.

The integrated heat recovery system is part of an on-going effort to reduce energy consumption in the textile industry and is now fitted as standard to all Montex 6500 stenters. Records maintained by Giovanni Clerici & Figli SpA over the past 18 months have indicated a large reduction in gas consumption. Its non-Monforts 6-chamber stenter, without a heat recovery system, in its Gallarate facility, has been consuming 83 m³/h. If evaluated as an 8-chamber unit this equates as 111 m³/h.

In comparison, Clerici's 8-chamber Montex 6500 with heat recovery is consuming just 55 m³ /h; providing a significant reduction of 56 m³/h. The second company, lining fashion wear producer, TMR Cederna Fodere SpA has two Montex stenters in its finishing operation, one a Montex 5000 without heat recovery and the second, a Montex 6500 fitted with heat recovery. The 5-chamber Montex 5000 consumes 37 m³/h which, if calculated as an 8-chamber stenter equates at 59 m³/h. Gas consumption in the 8-chamber Montex 6500 is just 28 m³/h. Dye house specialist Tintea ran two identical 2000m long batches through its 8 chamber Montex 6500 stenter – one batch with heat recovery, one without. It found a 20% gas savings for the batch produced using the heat recovery system.

The Monforts heat recovery system comprises a compact, air-to-air heat exchanger, which is installed within the roof structure of the stenter. The heat exchanger uses energy from the exhaust gas to preheat up to 60% of the incoming fresh air entering the stenter. Depending on production conditions, this provides energy savings of 10 – 35% and a typical payback period of around just 12 months.

Featuring large diameter vertical tubes, the heat exchanger requires very little maintenance with extended service every one – two months depending on production cycles. Downtime on the system can be reduced using the optional automatic dry cleaning device which eliminates the need for water or chemicals to ensure that the system is always operating at maximum efficiency.

The integrated system in a space-saving rectangular design eliminates the need for heavy support and access structures above the stenter, and reduces the amount of ductwork required.

The heat recovery system is clearly visible on this Italian installation.

Monforts Textilmaschinen GmbH & Co. KG

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