University of Twente Student Theses


Reducing the energy and water consumption of TenCate Protect: introducing process technology tools into the textile industry

Golde, S.I.M.L. van (2008) Reducing the energy and water consumption of TenCate Protect: introducing process technology tools into the textile industry.

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Abstract:Motive In the annual report of TenCate from 2006 it is stated that the aim of TenCate is to achieve an energy saving of 10% within 10 years. In accordance to this statement, TenCate Protect (TCP) has proposed a plan to reuse the cooling water used at TenCate Thiolon as process water at especially TCP. This plan reduces the energy consumption levels of TCP by using, due to the cooling activity, already preheated process water. However, as there has never been given much attention to the use of utilities per machine or production step before, it was not possible to give an acceptable indication about the energy savings possible. Therefore, mass and thermal energy balances per production step are created in this report. With these balances it not only becomes possible to give a good indication about the energy savings possible with the water recycling plan, also other utility saving options can be elaborated on now. It is recommended to · adjust the amount of water ( m3/hr) used at the heat exchanger of the ME to the amount stated on the production specifications ( m3/hr); · implement the water recycling plan with the piping system mentioned on page 41; · acquire and install steam consumption measurement devices at the steamers and drying sections and water consumption measurement devices at the impregnation and washing sections, in addition to overall steam and water consumption measurement devices per machine; · replace the current heat exchanger at the ME and the current first heat exchanger at the CVM with more efficient ones; · conduct further research as proposed page 57. Motivation As most utility consumption levels per production step were lacking quite some assumptions had to be made to create the mass and thermal energy balances. Therefore, TCP is recommended to install measurement devices to increase the accurateness of the input used for these balances. However, the recommended saving options based on these balances show the great potential TCP has to save on the utility consumption levels. Even more, when the future gas price will increase the way it currently does. Several of the proposed options are however already so beneficial, they should be implemented anyhow. These options are the water recycling plan, the water reduction at the ME and the heat exchanger replacements. Other options were proposed too. However, without further research into technical and/or financial details currently lacking at TCP it is not possible to determine whether or not they are beneficial to TCP. Consequences · By implementing the water piping system as mentioned on page 41, taking into account the capacity levels given on page 34 and a water transfer price of € per m3 to be paid by TCP to Thiolon, TCP can save about € annually in addition to the annual savings of € by reducing the amount of water used at the ME. · Additional savings of € annually are possible by replacing the heat exchanger at the ME and the first heat exchanger at the CVM. In total, approximately € is needed to finance the replacement of both heat exchangers. · Other options, potentially reducing the annual utility costs with at least another € , require further research. · Finally, by measuring the crucial input data for the created balances, the predictive value of these balances increases. They could then be used for improving amongst others the cost-pricing methods of the fabric.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:85 business administration, organizational science
Programme:Industrial Engineering and Management MSc (60029)
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