Track: Energy

Abstract

Energy efficiency (EE) improvement is a crucial issue in a world suffers from threats of escalated depletion of energy nonrenewable resources. In the highly intensive energy consumption industries such as petro-chemical industries, more realistic modeling of energy efficiency is of a paramount importance. Building such models and thereby indicators for energy efficiency enables concerned firms to work out their plans for continuous improvement of the efficiency of energy utilization. In the presented work, a methodology, based on the concept of embodied product energy (EPE), is proposed for evaluation of energy efficiency. Accordingly, a baseline can be set for compliance with international energy management systems (EnMS) requirements like those of ISO 50001, or for self-declaration and benchmarking. For the purpose of validation of obtained expressions, a case study in petrochemicals industry is introduced. Using the proposed model, a main energy efficiency of 20.76 % was calculated for a certain polyethylene (PE) grade in the manufacturing unit of the additive and pelletizing unit (APU) in the polyethylene plant under study.