Development and testing of a relay nozzle concept for air-jet weaving

Münkel, Andreas; Gloy, Yves-Simon; Gries, Thomas

doi:10.1088/1757-899x/254/13/132003

Cited by 3 publications

(2 citation statements)

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“…Energy saving has been a major concern in fabric formation, yielding innovations such as nozzle technology in air-jet weaving looms, which account for ~27-38% of total manufacturing costs. High-volume, low-pressure nozzles can save up to 26% of energy 34 thanks to their optimized nozzle geometry. A weft insertion mechanism via magnetic actuation can also save 60% of energy 35 .…”

Section: Textile Conversionmentioning

confidence: 99%

Advancing life cycle sustainability of textiles through technological innovations

et al. 2022

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Throughout their life cycle, textiles produce 5-10% of global greenhouse gas emissions and consume the second-largest amount of the world's water with polluting microplastics and chemical agents released to waterways. Here we examine the state-of-the-art technology developments meant to solve these problems in a cradle-to-grave fashion. We analyse their impacts with respect to the Sustainable Development Goals in the United Nations Agenda 2030, particularly those concerning the deployment of natural resources, energy and environmental impacts. We follow a systematic analytical framework that identifies and elucidates impactful technologies. We further discuss future directions along which the green transformation of textiles could be accelerated.Textile products have a global market valued at US$961.5 billion, with major sectors in apparel (~75%), technical textiles (~12%) and household goods (~9%) 1 . Approximately 90 billion articles of clothing, or 62 Mt, are manufactured and sold each year 2 . Apart from meeting essential clothing needs, the textile supplier chain provides ample employment opportunities, fuels economic and social developments, and improves well-being and life quality, especially in developing countries.The life cycle of textile and apparel products involves different stages and players because the product supply chain is long, highly branched and globalized, as shown in Fig. 1. The life cycle begins with making or harvesting raw materials for textile fibres, originating from plants, animals and petroleum, among other sources, thus involving the agriculture and chemical industries. Fibre production routes vary greatly, from harvesting from plants or animals to fibre forming through methods such as melt spinning, dry spinning and wet spinning. At the textile conversion stage, fibres or fibre blends are used to make yarns and fabrics with the desired tenacity, durability, colour, pattern and hand feel. Products such as garments require further processing to realize the final forms to be used by consumers. The distribution stage involves logistics, wholesalers and retailers. Product cleaning and care are normally conducted at home as laundry at the usage stage. The disposal stage has several branches; the used products may be sent to landfills or incinerators or alternatively recycled or reused. Since the suppliers of This is the Pre-Published Version.

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Section: Textile Conversionmentioning

confidence: 99%

Advancing life cycle sustainability of textiles through technological innovations

et al. 2022

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“…By means of CFD, Kim, Setoguchi and Kim 12 studied the flow field in the reed channel for several relay nozzle diameters, supply pressures and orientations. Grassi, Schröter, Gloy et al 13 and Münkel, Gloy, Gries et al 14 performed CFD simulations to test and evaluate a new energy-efficient design for the relay nozzles.…”

Section: Introductionmentioning

confidence: 99%

Towards simulation of force and velocity fluctuations due to turbulence in the relay nozzle jet of an air jet loom

Delcour

Langenhove

Degroote

2020

Textile Research Journal

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This research was aimed at obtaining a first estimation of the effect of turbulent vortices present in the relay nozzle jets of an air jet loom on the weft. To this end a large eddy simulation (LES) model was set up and validated capable of simulating a highly underexpanded jet up to a point sufficiently far from the nozzle exit such that flow features at the weft location could be analyzed. The quality of the LES was evaluated based on several quality criteria as well as by comparing the results with experiments and data from the literature. The results show that for a free jet substantial velocity fluctuations are present at a representative yarn location. By inserting a rigid cylinder at this location, the corresponding force fluctuations on a smooth yarn were also obtained. The research shows that the unsteadiness in the jet is quite substantial, as are the corresponding force fluctuations. These fluctuations could have a profound impact on the yarn motion and should at least be considered when using numerical tools to evaluate the forces on or the motion of a yarn acted on by a relay nozzle jet.

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Characteristics of instantaneous intersecting airflow from main nozzle and various relay nozzles in an air jet loom

Xiao,

Shen,

Yang

et al. 2023

The Journal of The Textile Institute

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Development and testing of a relay nozzle concept for air-jet weaving

Cited by 3 publications

References 0 publications

Advancing life cycle sustainability of textiles through technological innovations

Advancing life cycle sustainability of textiles through technological innovations

Towards simulation of force and velocity fluctuations due to turbulence in the relay nozzle jet of an air jet loom

Characteristics of instantaneous intersecting airflow from main nozzle and various relay nozzles in an air jet loom

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