Methodology for systematic analysis and improvement of manufacturing unit process life cycle inventory (UPLCI) CO2PE! initiative (cooperative effort on process emissions in manufacturing). Part 2: case studies

Abstract

Purpose This report presents two case studies, one for both the screening approach and the in-depth approach, demonstrating the application of the life cycle assessment-oriented methodology for systematic inventory analysis of the machine tool use phase of manufacturing unit processes, which has been developed in the framework of the CO 2 PE! collaborative research programme (CO 2 PE! 2011) and is described in part 1 of this paper (Kellens et al. 2011).Screening approach The screening approach, which provides a first insight into the unit process and results in a set of approximate LCI data, relies on representative industrial data and engineering calculations for energy use and material loss. This approach is illustrated by means of a case study of a drilling process. In-depth approach The in-depth approach, which leads to more accurate LCI data as well as the identification of potential for environmental improvements of the manufacInt J Life Cycle Assess

A comparison of energy consumption in bulk forming, subtractive, and additive processes: Review and case study

“…The sampling rate of power consumption was 5 Hz. The in-depth approach 33,53 was used to calculate energy consumption, from the processing time and power measurements.…”

“…The total processing time was composed of the basic time (standby), idle time (partial mode), and drilling-mode time (full mode). 53 Guo et al attempted to determine the optimum-cutting conditions to minimize energy consumption, for fine-surface quality with finish turning. 59 To determine the optimal conditions, they constructed an energy model, based on component decomposition.…”

Methods and Tools for Performance Assurance of Smart Manufacturing Systems

“…There is also the Cooperative Effort on Process Emission in Manufacturing Project (CO2PE! ), a collaborative effort that has developed a methodology for availing high-quality LCI data for assessment and in-depth analysis of individual manufacturing unit processes [144]. The LCI Data Commons is a US government effort to consolidate and provide reference data as well [145].…”

LCI Databases Sensitivity Analysis of the Environmental Impact of the Injection Molding Process

“…Sometimes only data at factory level are available. Research studies like the one developed in the CO2PE!-Initiative [13][14][15][16][17] try to analyze and solve these problems.…”