English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The hydrodynamics of a dyeing machine affects the exchange mechanisms between a   textile material and the liquid medium to a large extent. Namely, the transfer of dyes and   chemicals from the dyeing liquor and the release of non-bonded substances during   subsequent rinsing steps can be altered by relative movement between phases. Such   aspects have not been investigated thoroughly, although the typical approach of chemical   engineering can offer a relevant contribution in this view. As a practical result, important   benefits may follow in various operations of the dyeing process, aimed at optimising the   equipment use or saving resources, in particular water. The attention of this study was   focused on hank-dyeing machinery, since this production demands a considerable   amount of water due to the large liquor ratios. The experimental study was carried out at   a textile industry facility by operating on two units of equipment at significantly different   scales. The rinsing operation was monitored by sampling the liquid at several positions   along the vertical direction of the liquor: colour, conductivity and other chemical properties   were measured in order to devise an optimal production policy aimed at saving water.   A mathematical model of the equipment, based on a simple hydrodynamic hypothesis   and proper mass balances, was proposed, and its outputs were compared with the   experimental results. Both practical considerations and the theoretical analysis suggest   that water requirement during rinsing can be halved by modifying the procedure without   affecting the final quality of products.

INDUSTRIAL EXPERIMENTATION ON HANK-DYEING: MODELLING EQUIPMENT AND WATER ECONOMISATION DURING RINSING