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An Investigation into the implementation of multi objective optimization in sustainable manufacturing: a case study from household goods industry

Gök, Gözde
Sustainable manufacturing is defined as the creation of goods and services using processes that minimize negative environmental impacts, conserve energy, e.t.c. It is important for a manufacturing firm to measure and assess environmental impact along with three different dimensions: enterprise, process and product. Every enterprise needs to track and asses its environmental impact for accountability reasons towards its consumers, employees, society and government. It is known that immeasurable things cannot be managed in the environmental systems. The Refrigerator Compressor Plant is one of the manufacturing firms that come across emission problem existing due to energy consumption. It is known that there is a direct relation between energy consumption and carbon emissions. In other words, energy optimization is a key to reduce carbon emissions. Therefore, energy optimization studies are made in this Plant. This research mainly focuses on modeling and simulation of a sustainable manufacturing system by the use of a crankshaft production line and optimization of auxiliary energy consumption per part, overall cost per part, and number of finished parts per shift of The Refrigerator Compressor Plant. Thesis study starts with the production line examination and data acquisition. Then, System model is prepared and run in Arena software using real data. For optimization study, Simulation model variables are used as inputs. Simulation model is used with integration of optimization solver, OptQuest. Finally, simulation-based multi objective optimization process is completed.