Comparative study about heating systems for pultrusion process

Silva, Francisco; Ferreira, Filipe; Costa, Carlos M.; Ribeiro, M. C. S.; Castro, Ana C. Meira

doi:10.1016/j.compositesb.2012.01.057

Cited by 19 publications

(9 citation statements)

References 11 publications

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“…A previous research study conducted by the present authors, Silva et al [26] also showed a significant reduction on energy consumption that could be obtained using embedded cylindrical heaters into the die instead of external planar resistances. It was found that embedded resistances significantly enhance the energetic performance of pultrusion process, leading to 57% decrease of energy consumption exclusively due to die heating system.…”

Section: Energy Savings On Pultrusion Manufacturing Processesmentioning

confidence: 93%

Optimising the energy consumption on pultrusion process

Silva

Ferreira

Ribeiro

et al. 2014

Composites Part B: Engineering

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a b s t r a c tThis study is based on a previous experimental work in which embedded cylindrical heaters were applied to a pultrusion machine die, and resultant energetic performance compared with that achieved with the former heating system based on planar resistances. The previous work allowed to conclude that the use of embedded resistances enhances significantly the energetic performance of pultrusion process, leading to 57% decrease of energy consumption. However, the aforementioned study was developed with basis on an existing pultrusion die, which only allowed a single relative position for the heaters.In the present work, new relative positions for the heaters were investigated in order to optimise heat distribution process and energy consumption. Finite Elements Analysis was applied as an efficient tool to identify the best relative position of the heaters into the die, taking into account the usual parameters involved in the process and the control system already tested in the previous study. The analysis was firstly developed based on eight cylindrical heaters located in four different location plans. In a second phase, in order to refine the results, a new approach was adopted using sixteen heaters with the same total power. Final results allow to conclude that the correct positioning of the heaters can contribute to about 10% of energy consumption reduction, decreasing the production costs and leading to a better eco-efficiency of pultrusion process.

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Section: Energy Savings On Pultrusion Manufacturing Processesmentioning

confidence: 93%

Optimising the energy consumption on pultrusion process

Silva

Ferreira

Ribeiro

et al. 2014

Composites Part B: Engineering

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“…Moreover, in posterior studies, it was also found that the optimized position of the internal heaters throughout the die could even additionally reduce the energy consumption linked to the heating process 8% more [53]. More details of conducted research studies can be found in Silva et al [52,53].…”

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confidence: 98%

“…Earlier studies conducted by the authors showed that significant savings on energy consumption of the pultrusion process could be achieved using embedded cylindrical heaters into the die instead of external planar resistances [52]. Experiments were conducted in a 900 mm length die during the manufacturing process of a standard pultrusion profile (Profile U: 50 × 10 × 4), keeping all the other process parameters constant-pulling speed, pulling force, total resistance power and temperature profile (TP)-along the die.…”

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confidence: 99%

Recycling Approach towards Sustainability Advance of Composite Materials’ Industry

et al. 2016

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Worldwide volume production and consumption of engineered composite materials, namely fiber reinforced polymers (FRP), have increased in the last decades, mostly in the construction, automobile, aeronautic and wind energy sectors. This rising production and consumption have also led to an increasing amount of FRP waste, either end-of-life (EoL) products or manufacturing rejects. Taking into account the actual and impending EU framework on waste management, in which clear targets are set with concrete measures to ensure effective implementation, landfill and incineration will be progressively unavailable as traditional end-routes for this kind of waste. Recycling techniques and end-use applications for the recyclates have been investigated over the past twenty years, but even so, more cost-effective and feasible market outlets for the recyclates should be identified that meet both the economic and the environmental points of view. This paper is aimed at enclosing and summarizing an update overview regarding all these issues: current legislation, recycling techniques and end-use applications for the recyclates. Additionally, as a case study, the assessment of the potential improvements that could be made on the eco-efficiency performance (sustainability) of a typical FRP composite materials' industry by recycling and re-engineering process approaches is also reported.

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“…Obtained results showed that internal resistances enhance significantly the energetic performance of pultrusion process, leading to 57% decrease of energy dispend in heating process, which represents a reduction of 17% of total energy consumed. A detailed explanation of conducted research study can be found in Silva et al [7].…”

Section: Re-engineering Manufacturing Process In Order To Maximize Enmentioning

confidence: 99%

A Case Study on the Eco-Efficiency Performance of a Composite Processing Industry: Evaluation and Quantification of Potential Improvements

Ribeiro¹

2013

J. Res. Updates Polym. Sci.

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Abstract:In this study, an attempt was made in order to measure and evaluate the eco-efficiency performance of a pultruded composite processing company. For this purpose the recommendations of World Business Council for Sustainable Development (WCSD) and the directives of ISO 14301 standard were followed and applied. The main general indicators of eco-efficiency, as well as the specific indicators, were defined and determined. With basis on indicators' figures, the value profile, the environmental profile, and the pertinent eco-efficiency ratios were established and analyzed.In order to evaluate potential improvements on company eco-performance, new indicators values and eco-efficiency ratios were estimated taking into account the implementation of new proceedings and procedures, at both upstream and downstream of the production process, namely:Adoption of a new heating system for pultrusion die-tool in the manufacturing process, more effective and with minor heat losses;ii) Recycling approach, with partial waste reuse of scrap material derived from manufacturing, cutting and assembly processes of GFRP profiles.These features lead to significant improvements on the sequent assessed eco-efficiency ratios of the present case study, yielding to a more sustainable product and manufacturing process of pultruded GFRP profiles.

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Comparative study about heating systems for pultrusion process

Cited by 19 publications

References 11 publications

Optimising the energy consumption on pultrusion process

Optimising the energy consumption on pultrusion process

Recycling Approach towards Sustainability Advance of Composite Materials’ Industry

A Case Study on the Eco-Efficiency Performance of a Composite Processing Industry: Evaluation and Quantification of Potential Improvements

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