Saving Energy in the GFRP Pultrusion Process

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Francisco Silva (Author) Other; Maria Cristina Ribeiro (Author) FEUP; Ana Castro (Author) FEUP; Mário Castro (Author) FEUP; António Fiuza (Author) FEUP; Maria De Lurdes Dinis (Author) FEUP

Journal

Title: Journal of Research Updates in Polymer Science

Vol. 2

Pages: 132-141

ISSN: 1929-5995

Publisher: Lifescience Global

Scientific classification

CORDIS: Technological sciences > Technology ; Technological sciences > Engineering ; Physical sciences > Mathematics

FOS: Engineering and technology

Other information

DOI: 10.6000/1929-5995.2013.02.02.7

Abstract (EN): This study addresses to the optimization of pultrusion manufacturing process from the energy-consumption point of view. The die heating system of external platen heaters commonly used in the pultrusion machines is one of the components that contribute the most to the high consumption of energy of pultrusion process. Hence, instead of the conventional multi-planar heaters, a new internal die heating system that leads to minor heat losses is proposed. The effect of the number and relative position of the embedded heaters along the die is also analysed towards the setting up of the optimum arrangement that minimizes both the energy rate and consumption. Simulation and optimization processes were greatly supported by Finite Element Analysis (FEA) and calibrated with basis on the temperature profile computed through thermography imaging techniques. The main outputs of this study allow to conclude that the use of embedded cylindrical resistances instead of external planar heaters leads to drastic reductions of both the power consumption and the warm-up periods of the die heating system. For the analysed die tool and process, savings on energy consumption up to 60% and warm-up period stages less than an half hour were attained with the new internal heating system. The improvements achieved allow reducing the power requirements on pultrusion process, and thus minimize industrial costs and contribute to a more sustainable pultrusion manufacturing industry.

Language: English

Type (Professor's evaluation): Scientific