ENERGY CONSUMPTION MANAGEMENT IN TEXTILE FINISHING PLANTS: A COST EFFECTIVE AND SEQUENCE DEPENDENT SCHEDULING MODEL

Year 2017, Volume: 27 Issue: 2, 145 - 152, 30.06.2017

İ. Hakan Karacızmelı S. Noyan Ogulata

Abstract

This study focuses on managing energy consumption and reducing energy costs in textile finishing plants with an effective scheduling approach, which consists of sequence dependent set-up times, sequence dependent set-up energy usages and time-of-use energy tariff. The finishing plants are typical examples of the flexible job shops. Therefore, a novel energy saving mixed-integer linear programming model is proposed for the sequence dependent flexible job shop scheduling problems in this study. The proposed model comprises an extended cost function that has a quaternary structure for tackling actual scheduling problems. The capability of the developed model is evaluated with actual manufacturing data.

Keywords

Textile finishing, flexible job shop scheduling, sequence dependent set-ups, time-of-use energy tariff, energy costs

TEKSTİL TERBİYE TESİSLERİNDE ENERJİ TÜKETİMİ YÖNETİMİ: MALİYETE DUYARLI VE SIRALAMAYA BAĞLI BİR ÇİZELGELEME MODELİ

Abstract

Bu çalışmada tekstil terbiye işletmelerinde, etkin bir çizelgeleme yaklaşımıyla, enerji tüketimi yönetiminin sağlanması ve enerji maliyetlerinin azaltılması amaçlanmaktadır. Bu çizelgeleme yaklaşımında, sıralamaya bağlı hazırlık işlemleri süreleri, sıralamaya bağlı hazırlık işlemleri enerji tüketimleri ve zamana bağlı elektrik enerjisi tarifesi bir bütün halinde ele alınmaktadır. Tekstil terbiye işletmeleri, esnek atölye tipi üretim ortamlarının tipik örnekleridir. Bu yüzden, yapılan çalışmada sıralamaya bağlı esnek atölye tipi üretim ortamları için yeni bir enerji tasarruflu, karma tam sayılı doğrusal programlama modeli önerilmektedir. Önerilen model aktüel çizelgeleme problemlerini karşılayabilen dört bileşenli bir maliyet fonksiyonunu içermekte olup, modelin yeterliliği gerçek zamanlı üretim verileriyle sınanmıştır.

Keywords

Tekstil terbiye, esnek atölye tipi çizelgeleme, sıralamaya bağlı hazırlık işlemleri, zamana bağlı enerji tarifesi, enerji maliyetleri

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