An integrated method for assessing the energy efficiency of machining workshop

Wang, Qiulian; Liu, Fei; Li, Congbo

doi:10.1016/j.jclepro.2013.03.020

Cited by 83 publications

(25 citation statements)

References 22 publications

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“…Useful energy outputs may be measured by a variety of thermodynamic or physical indicators, the appropriate choice of which will depend upon the system under consideration, the purpose of the analysis, and the availability of the relevant data [36,37].…”

Section: Energy Efficiency Definitionmentioning

confidence: 99%

On a generalized approach to manufacturing energy efficiency

Fysikopoulos

Pastras

Alexopoulos

et al. 2014

Int J Adv Manuf Technol

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Energy efficiency has become a very significant factor, requiring its inclusion in the manufacturing decision-making attributes. This paper proposes a generalized approach to manufacturing energy efficiency. The basic element of the approach is the division of energy efficiency definition and study into four manufacturing levels, namely process, machine, production line, and factory. Process-level definitions are provided for the majority of manufacturing processes. A machine-level study indicates and solves difficulties, generated by the workpiece geometry, and points out the interaction with the process level through factors, such as the process time. Moreover, machine tool peripherals are responsible for a significant portion of the consumed energy, and classification based on the dependence of their consumption on process variables is required. Studies made on the production line and factory levels show that energy efficiency, at these levels, is heavily dependent on production planning and scheduling and can be improved through the appropriate utilization of machines, with the inclusion of shutdown and eco-modes. Finally, a case study is presented, showing that many of the difficulties towards the optimization of energy efficiency can be dealt with successfully, using the proposed generalized approach.

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Section: Energy Efficiency Definitionmentioning

confidence: 99%

On a generalized approach to manufacturing energy efficiency

Fysikopoulos

Pastras

Alexopoulos

et al. 2014

Int J Adv Manuf Technol

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show abstract

“…Furthermore, He and Liu [6] explored a systematic methodology that incorporated energy consumption and environmental impact considerations into the production operation of machining processes and optimized energy consumption by scheduling. Wang et al [7] showed a hierarchical energy consumption assessing system for the manufacturing system. No matter the product or machine energy studies, most of them assessed the past performance of the machining system.…”

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

Energy Consumption Modelling of the Machining System Based on Petri Net

Wang

Yang

2014

Advances in Mechanical Engineering

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Increasing pressures from a variety of directives and standards have caused the manufacturing enterprises to consider and initiate implementation of energy assessment and energy quota practices to improve both their economic and environmental performance. Therefore, in view of the complexity of machining system's energy consumption and the difficulty of data collection for energy analysis, a simplified and practical energy consumption model for machining system based on Coloured Petri Net (CPN) was proposed. Firstly, the energy flow of machining system was analysed. And then the energy consumption model of the machining system processing various tasks based on CPN was proposed, where the calculation method of energy use during production was simplified and it was determined by four parameters: idle power of machine, machining time, material pattern, and material removal volume. Finally, through the case study of a machining system with two tasks, the proposed energy model was simulated and the simulation results were proved to be significant in practice.

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“…Different studies relating to energy consumption modeling [1][2][3], energy consumption evaluation [4][5][6][7], and energy consumption optimization [8][9][10] can be found in the literature. However, research on energy consumption of a disassembly line is seldom performed.…”

Section: Introductionmentioning

confidence: 99%

“…(1) In order to deal with high energy consumption in a disassembly line, the energy consumption of each stage in the disassembling process was analyzed and modeled. (2) To solve the disassembly line balancing problem with an energy saving consideration, this paper established a mathematical model of workstation selection and disassembly sequence with minimum energy consumption, minimum number of workstations, and maximum similarity degree of working load. (3) By comparing the solutions to the disassembly line balancing problem (DLBP), which does not have an energy saving consideration, this paper shows that, by considering energy consumption, and cutting unnecessary operations of direction and tool change in a disassembly line, a greater amount of energy can be saved.…”

Section: Introductionmentioning

confidence: 99%

An Energy-Saving Optimization Method of Dynamic Scheduling for Disassembly Line

et al. 2018

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Abstract:Concerns have been increasing regarding the environmental sustainability of disassembly activities that take place in various recovery operations at end of life stage of products, and subsequently, disassembly activities have been gaining increased exposure. The disassembly line is a good choice for automated disassembly of end-of-life products. Although interest in addressing energy saving in manufacturing is rising, the study of incorporating energy consumption reduction and disassembly efficiency improvement into disassembly line balancing is still limited. The analysis, design, and balanced decision-making for disassembly lines are urgently needed in order to make the disassembly line as energy-saving as possible. In this paper, an energy-saving optimization method, which was used in scheduling workstation selection and the disassembly sequence for the disassembly line, is proposed. Energy consumption of each stage of the disassembling process was analyzed and modeled. Then, a mathematical model of the disassembly line balancing problem with energy saving considerations was formulated and the objective of energy consumption was integrated into the objectives of cost and working load in order to balance a disassembly line. Optimal solutions for the disassembly line balancing problem with an energy saving consideration were obtained by using an artificial bee colony algorithm, which was a feasible way of minimizing workstations, and ensuring similar working load, as well as minimizing energy consumption. Finally, a case study of disassembly line balancing for a typical driving system is presented to illustrate the proposed method.

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An integrated method for assessing the energy efficiency of machining workshop

Cited by 83 publications

References 22 publications

On a generalized approach to manufacturing energy efficiency

On a generalized approach to manufacturing energy efficiency

Energy Consumption Modelling of the Machining System Based on Petri Net

An Energy-Saving Optimization Method of Dynamic Scheduling for Disassembly Line

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