Cicerone Laurentiu Popa

Virtual Model in Monitoring and Optimization of a Selective Waste Collection Integrated System

This paper presents some results of a research project aiming to increase the usage degree, productivity and storage capacity of a selective waste collection system and the integration of the system in the smart city infrastructure. Companies that have waste collection and recycling as their target activity are looking for solutions in order to increase the collection levels for all types of waste. In our project we plan to modernize a waste collection system that will considerably increase the waste collection level, that will meet the requirements and the needs identified by the economic agent and that will adapt to the new technologies so that it will be integrated in the infrastructure of the smart city. The first objective of the project is to increase the use of the system, improve its productivity and its collected waste storage capacity. The second objective is to integrate the system in the infrastructure of the smart city. For the activities planned in order to meet these objectives, the paper proposes a material flow management optimizing algorithm based on a virtual model of the selecting and processing architecture of the system. The material flow management of this system will be based on its virtual model in order to identify and eliminate material flow concentrators and increase productivity. Simulation will be used to diagnose the initial performance of the system structural elements as well as to validate the optimized system performances after eliminating the bottlenecks.

Modelling, Simulation and Optimization of a Packaging and Palletizing System

This paper presents a material flow management case study based on our research in modelling, simulation and optimization for a packaging and palletizing system. The studied system allows packaging, palletizing, wrapping and storage of several types of products within a food company. For each type of product to be packaged and stored a material flow system simulation is necessary in order to identify and eliminate the bottlenecks and to obtain an optimized system in terms of productivity. Because the optimization algorithm is the same for different kind of products we will illustrate our research using a single type of product. We will focus the case study on packaging coffee bags in boxes. The boxes are positioned on pallets in order to create a stack that will be wrapped for storage. We used Flexim 7 simulation software for modelling, simulation and optimization of the packaging and palletizing system.