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Energy Audit Guide for Motor Driven Systems - Recommended Steps and Tools

By EMSA, IEA Technology Collaboration Programme June 24, 2018

This guideline gives a systematic and comprehensive overview on how to use available standards and tools for a motor system audit. This will help energy auditors to identify and calculate the most important energy-saving potentials in these systems by considering all relevant standards. The present document aims to help energy auditors, energy consultants, energy managers, and en-gineers to achieve their goals of saving energy in motor driven systems in industrial companies. However, many recommendations of the guideline are applicable to other sectors, e.g. municipal waste water plants or irrigation pumping systems.

This document is structured along the stages of an energy audit according to ISO 50002 and includes organisational and technical tasks to be performed during the audit. For each step, it refers to the relevant standards and tools.

In addition, it includes the following information:

Technology-specific key indicators for determination of appropriate energy-saving measures

Saving calculation methods

The nine main steps of the energy audit methodology for motor driven systems (MDS) are listed below and are described more in detail in the following chapters:

Step 1: Acquisition and energy audit planning

Step 2: Opening meeting

Step 3: Data collection

Step 4: Measurement plan

Step 5: Conducting the site visit

Step 6: Data analysis

Step 7: Energy audit reportingStep 8: Closing meeting

Step 9: Connection to energy management and motor policy

The descriptions contain the methodology including organisational, management, and technical aspects as well as available tools which can support the energy auditor in the respective step.

The following reports related to motor systems have been published:

EMSA Motor MEPS Guide (2009)

EMSA Motor Policy Guide – Part 1 (2011)

EMSA Policy Guidelines for Electric Motor Systems – Part 2 (2014)

4E Energy efficiency roadmap for electric motors and motor systems (2015)

4E EMSA Policy Guidelines for Motor Driven Units – Part 1 (2016)
Analysis of standards and regulationsfor pumps, fans and compressors

4E EMSA Policy Guidelines for Motor Driven Units – Part 2 (2018)
Recommendations for aligning standardsand regulations for pumps, fans and compressors

Further information: https://nachhaltigwirtschaften.at/de/iea/technologieprogramme/4e/iea-4e-annex-emsa.php

Further information on EMSA is available at: www.motorsystems.org

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