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Load profile analysis for reducing energy demands of production systems in non-production times

Dehning, Patrick, Blume, Stefan, Dér, Antal, Flick, Dominik, Herrmann, Christoph, Thiede, Sebastian
Applied energy 2019 v.237 pp. 117-130
decision making, energy, energy conservation, energy costs, environmental law, factories, greenhouse gas emissions, markets, production technology
Intensifying market pressure, extended environmental legislations, increasing environmental consciousness and rising energy prices are a major concern for production companies worldwide. Production of goods is responsible for about one-third of the global greenhouse gas emissions. As a consequence the energy demand in production and with this the energy costs for the production of a product are moving more into focus of decision makers. Depending on the shift and working system of a company, the energy demand during planned non-production times like free shifts, weekends or holidays can be significant. However, a lack of knowledge about realistically achievable electrical load levels in non-production times due to missing benchmarks can be observed in practice. As a consequence, related energy saving potentials remain undetected. Against this background, this paper presents a methodology to analyze the electrical load during non-production times using load duration curves. Performance indicators are developed allowing for a comparison between factories in order to identify energy saving potentials. Within this paper a tool is developed to easily compare different automotive factories and tested using real data of two large car manufacturers.