Thin-Layer Drying Modeling in the Hot Oil-Heated Stenter

Akan, Ahmet Erhan; Ünal, Fatih

doi:10.1007/s10765-020-02692-x

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…They observed that the heat transfer coefficient increased by about 6% by increasing from 110 • C to 130 • C, and the energy efficiency decreased by 4%. With experimental data obtained from 9 different drying operations in a 10-chamber hot-oil-heated stenter and 12 different empirical and semi-empirical thin-layer models, Akan and Ünal [12] mathematically modeled the drying behavior of 67% cotton + 33% polyester knit fabrics containing Thessaloniki knit fabrics. Their models were in good agreement with experimental data for different thin-layer drying models.…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamic Simulation of Fabric Cooling in a Stenter Machine

Erdoğan,

Sığırcı

2024

Applied Sciences

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Stenter machines are used to remove moisture from fabrics produced in the textile industry. Following the drying process, the cooling process, which is applied to fabrics using injector channels, is conducted in the last section of a stenter machine, preventing fabrics from expanding and the degradation of their quality. The present study mainly aimed to investigate the fabric-cooling process in a stenter machine used actively in a textile company. First, industrial data were obtained with some experiments, and computational fluid dynamics (CFD) simulations were then conducted by validating the industrial data. All CFD models were simulated using ANSYS Fluent commercial CFD software. A total of four parameters, including two geometric and two operating parameters, were considered in order to investigate their effects on the fabric-cooling performance of the stenter machine. While the geometric parameters were the porosity (β) and injector angle (α), the operating parameters were the velocity of the airflow that cools the fabrics and fabric velocity, representing the movement of the fabric. As outputs of CFD simulations, fabric surface temperature values, the distributions of fabric surface temperatures, and some streamlines were illustrated. Although low values of porosity (β1 = 0.05) and injector angle (α1 = 0°) provided better performance, airflow velocity could be increased one or two times for the range of these constant parameters.

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Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamic Simulation of Fabric Cooling in a Stenter Machine

Erdoğan,

Sığırcı

2024

Applied Sciences

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“…Typical stretched dryers or stenters are used to cater a variety of services including heat setting & drying of open-width fabrics, moisture management, dimensional control, application of finishing chemicals, shade controlling, etc [6]. Depending on the fabric structure, exposure time, risk of damage, etc.…”

Section: Introductionmentioning

confidence: 99%

Implementation of Pre-Heating System in Stenters for Improving Machine Performance and Increasing Efficiency

Raafi¹,

Fatema²

2021

JTST

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In textile finishing, stenters always draw considerable attention to newer inventions to boost up production via maximum utilization of energy. Prior to main drying or heat-setting chambers, intermediate heating of cylindrical system especially by steam has a direct blessing to moisture evaporation, processing speed, fabric quality and so on. Based on actual operational data, this study reveals the outcomes of a pre-heating module installed within a stenter. After employing the pre-heating system to knit fabrics of different structures and compositions, 23% -61% moisture reduction was found and the speed of processing fabrics was increased simultaneously by 17% -30% without any compromise on fabric quality. Moreover, no less than 8.21% savings in annual electricity consumption were observed.

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“…Farklı ısı değiştiricisi konfigürasyonları kullanılarak ram makinelerinin egzozunda enerji geri kazanımı için çeşitli metodolojiler de geliştirilmiştir [9]. Ram makinelerinin enerji verimliliğini, kurutma performansını ve ısı geri kazanım potansiyelini inceleyen deneysel çalışmalar da mevcuttur [3, [10][11][12][13].…”

Section: Introductionunclassified

Ram makinelerindeki hava akışının Hesaplamalı Akışkanlar Dinamiği ile modellenmesi

Siğirci¹,

Erdogan²

2021

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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Bu çalışmada, bir tekstil fabrikasında aktif olarak kullanılan bir ram makinesindeki hava akışı Hesaplamalı Akışkanlar Dinamiği (HAD) yöntemi ile modellenmiştir. Sayısal akış simülasyonları ANSYS Fluent paket programında gerçekleştirilmiştir. Akış rejimi daimi ve türbülanslı akıştır. Reynolds Ortalamalı Navier -Stokes (RANS) denklemleri Fluent'te çözdürülmüş, analizlerde Standart k-ε türbülans modeli seçilmiştir. Akış alanına ait hız verileri görsellerle sunulmuş ve akış verimliliğini etkileyen parametreler karşılaştırılmıştır. Analizler farklı düze geometrileri için gerçekleştirilmiştir. Geometri değişiklikleri düze açıklık oranı (B) ve düze açısı (α) değiştirilerek sağlanmıştır. Mevcut düze geometrisi ile farklı geometrilerin akış alanına ait hız değişkenleri üzerinden karşılaştırma yapılmıştır. Düze açıklık oranının %20-30 civarında ve düze açısının 0 o (ki bu düzenin yatay konumda olduğu anlamına gelir) olmasının ram makinesinde daha verimli bir akış sağladığı sonucuna varılmıştır.

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Thin-Layer Drying Modeling in the Hot Oil-Heated Stenter

Cited by 6 publications

References 19 publications

Computational Fluid Dynamic Simulation of Fabric Cooling in a Stenter Machine

Computational Fluid Dynamic Simulation of Fabric Cooling in a Stenter Machine

Implementation of Pre-Heating System in Stenters for Improving Machine Performance and Increasing Efficiency

Ram makinelerindeki hava akışının Hesaplamalı Akışkanlar Dinamiği ile modellenmesi

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