Technical guidelines for the evaluation of energy savings of thermal power plants

This document gives general technical guidelines for evaluating energy savings of thermal power plants before and/or after implementing energy performance improvement action(s) (EPIAs). It includes evaluation, unit component efficiency, indexes calculation, analyses and reporting. This document is applicable to existing thermal power generating units (TPGUs), where fossil fuels (e.g. coal, oil, natural gas) are combusted to generate electricity only or to supply thermal energy with the additional production of electricity (i.e. combined cycle power plants). NOTE A typical thermal power plant encompasses at least one TPGU. If there is more than one, the TPGUs can run independently. Results obtained in accordance with this document can be used either to evaluate the potential of energy savings or to determine fulfilment of contract guarantees. They do not provide a basis for comparison of the energy savings between TPGUs. This document does not prescribe performance tests or measurements for TPGU equipment components/systems, the sampling and analysis of the fuels used, substances added for control of emissions (e.g. halide, limestone) and by-products (e.g. ash, gypsum), and instruments to be employed, but it does specify parameters of interest in the determination of energy savings. Applicable procedures can be found in relevant documents (published or to be published).

Lignes directrices techniques pour l'évaluation des économies d'énergie des centrales électriques thermiques

General Information

Status
Published
Publication Date
19-Mar-2019
Current Stage
9020 - International Standard under periodical review
Start Date
15-Jan-2024
Completion Date
15-Jan-2024
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ISO 50045:2019 - Technical guidelines for the evaluation of energy savings of thermal power plants
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INTERNATIONAL ISO
STANDARD 50045
First edition
2019-03
Technical guidelines for the
evaluation of energy savings of
thermal power plants
Lignes directrices techniques pour l'évaluation des économies
d'énergie des centrales électriques thermiques
Reference number
ISO 50045:2019(E)
©
ISO 2019

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ISO 50045:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2019 – All rights reserved

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ISO 50045:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols, units and abbreviations . 4
5 Evaluation of energy savings . 5
5.1 General . 5
5.2 Principles . 6
5.3 Evaluation indexes . 7
6 Unit component efficiency . 8
6.1 Boilers . 8
6.1.1 Boundary . 8
6.1.2 Boiler energy balance . 8
6.1.3 Boiler efficiency calculations .11
6.1.4 Others .12
6.2 Steam turbine/generator efficiency .12
6.3 Gas turbine efficiency .13
6.3.1 General.
...

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