Home / Knowledge / News / Textiles / Dyeing machine producer fights increasing energy costs & labour shortage
Dyeing machine producer fights increasing energy costs & labour shortage
02
Sep '11
For more than 50 years the German textile machinery manufacturer Thies Textilmaschinen GmbH & Co. KG has produced yarn pressure dryers, during which period they have delivered worldwide more than 2,000 units.

Set against a background of rising energy; and labour costs, a further refinement and development of the process. This principal of drying yarn in package form is gaining renewed interest.

The latest model of the pressure dryer, employing the most recent refinements producing excellent drying results with minimal energy consumption, a conditioning device ensuring uniform residual moisture content within and throughout the yarn packages.

The principal difference between an atmospheric and pressure dryer is the use of a closed recirculating system working at 5 bar pressure. The overpressure increasing the moisture retention properties of the air and furthermore its heat retention characteristics, so that more heat energy is transferred to the drying material, in turn reducing the total drying or cycle time.

The constantly rising costs of energy will ensure that the pressure dryer principal will continue to gain ground. Using a computer controlled process with precise programmed values; the air exiting the drying vessel carries the maximum possible amount of moisture, resulting in savings of up to 50% in process heating and cooling costs.

The T-h values shown in diagrams 1 (old process) and 2 (new process) illustrate the savings in heating and cooling energy. From which can be seen the difference between the hot air inlet temperature TE and the cooling temperature TR, the heat energy used and the difference between the exit temperature TA and the cooling temperature TR the cooling energy required.

Significant improvements in recent years include an optimised heat exchanger, yarn conditioning device and a completely new high capacity blower design.

An integrated heat recovery unit, in which the heated cooling water can be recycled to the dyehouse process water system, is an important advantage of these pressure dryers.

A cost comparison between a Thies pressure dryer and a radio frequency (RF) dryer operating under Asian conditions, based on a yearly capacity of 6000 t shows significant savings.

Labour to operate the RF dryer – it requires eight people to unload the packages from the dyeing machine carriers, load and unload the centrifuge, load and unload the RF dryer.

In comparison the personnel required to operate a pressure dryer is significantly less. It requires just two people to load and unload the machine and unload the carrier.

Electrical energy consumption of a RF dryer/centrifuge - 0.67 kwh/kg Co yarn
Electrical energy consumption of a Thies pressure dyer - 0.25 kwh/kg Co yarn

The steam consumption for a Thies pressure fitted with a heat recovery system is 1.1 kg steam/kg CO yarn.

A comparison of the average results obtained by a number of Asian customers and their corresponding energy and labour costs using the latest 'state of the art' pressure dryer can be seen in diagram 3. This shows a total of cost of 5.0 Euro cents/kg yarn for a pressure dryer fitted with a heat recovery system producing heated cooling water for use in the dyehouse. This compares with 8.2 Euro cents/kg yarn for a process using a combination of centrifuges and RF dryers.

Must ReadView All

President Tsai Ing-wen delivering remarks before boarding her plane bound for Central America. Courtesy: Presdient's office

Textiles | On 16th Jan 2017

‘Textiles at centre of Taiwan’s new trade arrangements’

Textiles should be at the heart of Taiwan’s thinking while developing ...

Apparel/Garments | On 16th Jan 2017

Ralph Lauren develops policy on tracking wood based fabrics

In a bid to trace source of wood based fabrics like viscose and rayon ...

Apparel/Garments | On 16th Jan 2017

EC proposes enhanced market access for Sri Lanka

The European Commission (EC) has proposed that a significant part of...

Interviews View All

Mandeep Nagi
Shades of India

Women value something that is unique and has a flavour of India

Abhimanyu Singh Rathore & Barbara Anna Kosiorek
Kannbar

‘Blending cultures is the true beauty of fashion, where one’s imagination...

Vidhyaa Shankar. S
A Ganapathi Chettiar

'The usage of knits is getting into the boundaries of woven fabrics'

Ashok Desai
Bombay Textile Research Association

Bombay Textile Research Association (BTRA) is a leading name in textile...

Kerem Durdag
Biovation II LLC

Kerem Durdag, CEO, Biovation II LLC, provides an insight into future...

Suresh Patel
Sidwin Fabric

Sidwin Fabric is a manufacturer and exporter of polypropylene textiles and ...

Karan Arora
Karan Arora

Bridal couture created with rich Indian heritage, exquisite craftsmanship...

Judy Frater
Somaiya Kala Vidya

Among the many honours showered on Frater, including Fulbright and Ford...

Silvia Venturini Fendi
Fendi s.r.l

"Yes, my confidence and positive attitude are my strengths and should be...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH
January 2017

January 2017

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

SUBSCRIBE


Browse Our Archives

GO


eNEWS
Insights
Subscribe today and get the latest News update in your mail box.
Advanced Search