Post on 09-Aug-2015
© 2014 Concepts ETI, Inc. All rights reserved.
ORC HEAT-TO-POWER SYSTEMS: THOUGHTS ON CODES,
STANDARDS, AND REGULATIONS
2nd Meeting of the ASME IGTI ORC Power Systems Committee Technical Subcommittee on Standards and Regulations
ASME Turbo Expo 2014 CCD Congress Center | Düsseldorf, Germany
Tuesday, June 17, 2014, 6 to 8 PM CET
Keith D. Patch ORC Product Manager Concepts NREC (CN )
+1 (781) 937- 4616 kpatch@conceptsnrec.com
2 © 2014 Concepts ETI, Inc. All rights reserved.
Copyright Statement
The material in this presentation is covered by various copyrights, including copyright © 2014 by Concepts ETI, Inc. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means—electronic, mechanical, magnetic, optical, chemical, manual or otherwise—without prior written permission from Concepts ETI, Inc., 217 Billings Farm Road, White River Jct., Vermont 05001, USA. Portions of this volume may require permissions of individuals associated with organizations other than Concepts ETI, Inc.
3 © 2014 Concepts ETI, Inc. All rights reserved.
CN is a 50 year-old company, with ≈100 employees 72 patents granted, 19 patents pending 39 employees have advanced college
degrees ORC engineering experience: from the
early 1970s to the present time
Keith D. Patch is a 25+ year veteran of the energy field Waste heat recovery, fossil fuels,
biomass, fuel cells, lithium-ion batteries, and nuclear instrumentation
Residential-, commercial-, industrial-, and utility-scale
Introduction
Typical CFD Turbine Analysis Results
4 © 2014 Concepts ETI, Inc. All rights reserved.
We need to plan our effort to develop required ORC codes, standards, and regulations
Why? Today, every country has their own codes, standards, and
regulations that apply to ORC components and systems It makes sense to unify these disparate regulations
A few generally applicable international standards exist ISO, IEC, International Fire Code, etc.
A few related international standards exist ISO 27.040: gas and steam turbines; steam engines
No international standards exist for ORC components or systems
Problem Statement
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Initially focus on standards/regulations for ORC system components Valves, pumps, heat exchangers, expanders, etc.
Next focus on equipment standards/regulations for ORC subsystems Subsystem = expander + heat exchangers + pump + piping
• Might not include heat source and cooling source supplies Two types of standards/regulations
• Equipment • Performance determination
Next focus on equipment standards/regulations for complete, installed ORC systems System = expander + heat exchanger + pump + piping + heat source +
cooling source Two types of standards/regulations
• Equipment • Performance determination
Potential ORC Workgroup Direction
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Draft complete list of necessary codes and standards Components, subsystems, and complete systems
Investigate adopting generally applicable international standards Electrical, mechanical, fire safety, safety, etc.
Investigate modifying related international standards Modify ISO 27.040 steam turbine and steam engine standards to
meet ORC requirements? Investigate modifying related national standards
If no international standard is available If the national standard is more applicable to ORC systems
Write new ORC standards Borrowing from existing standards, as appropriate
Suggested Outline of Work
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Perhaps select a basis similar to ISO gas turbine standards Single operating point – with corrections?
Perhaps select a specific number of operating points? Various heat source temperatures? Various heat sink temperatures?
Perhaps compare performance as a percentage of Carnot efficiency?
Comments?
ORC Subsystem and System Performance Thoughts
8 © 2014 Concepts ETI, Inc. All rights reserved.
CSA B52-05 – Mechanical Refrigeration Code Piping, pressure relief valve locations, etc.
ANSI/UL (IEC) 60335-2-34, Standard for Household and Similar Electrical Appliances, Part 2: Particular Requirements for Motor-Compressors Including hermetic refrigerant motor-compressors
EU Directive 96/61/EC – Integrated Pollution Prevention and Control (IPPC) The IPPC Directive Specifies “Best Available Techniques” (BAT)
Examples
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ISO 817:2014 – Refrigerants – Designation and Safety Classification
2008 Hydrocarbon Working Fluid (Propane) Explosion/
Fire in New Zealand
Our industry has to avoid undesirable events and publicity
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Problem statement: what we need to do as a workgroup Potential ORC workgroup direction
Components, subsystems then complete systems Suggested outline of work
Make a list Adopt, modify, write new
Examples given of codes, standards, and regulations Bottom line, we do not want to have to adhere to steam
boiler code requirements
Summary