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baner Home / Committees & Projects / Projects / Exhaust Systems Project


  • Best Practice Guidelines for Combined Cycle Power Plant
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  • Enhanced flexibility concepts for current GTCC
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An article on ETN's Exhaust Systems Working Group has been published in the Turbomachinery Magazine! To view the article, please click here.

Turbomachinery Magazine

Exhaust Systems Project
Exhaust Systems Project
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The aim of ETN in producing this Recommended Practice is to create a document that can be submitted to the industry and eventually be recognized as an ISO Standard.





Project Description:

The Exhaust Systems Project was initiated in 2009, and initially chaired by Statoil, as they experienced problems with their exhaust systems. The goal was to bring together operators facing similar problems with their exhaust systems, as well as exhaust system designers and external expertise and support, who could address the problems by developing a common standard for the design of gas turbine (GT) exhaust systems.

In the first phase of the project, the group carried out a gap analysis, uploaded an index to facilitate the creation of the standard, and collected valuable material. Both Shell and Statoil shared their internal standard. In the autumn of 2010 Total took over the lead of the project group. The shared standards were then merged as well as supplemented by additional internal documents, which had been provided by exhaust system designers, such as Mj¸rud and BIHL.

During various meetings it was decided to focus on the creation of the Waste Heat Recovery Unit (WHRU) standard and later amend the existing API standard on Heat Steam Recovery Generators (HRSG). The different organisations have reviewed their section of the standard which will be rewritten to fit ISO standard regulations.

Moreover, it has been decided that the standard should highlight the possibilities and importance of Computational fluid dynamics (CFD) simulation. The group agreed that the best way to validate the CFD code is to use a benchmark case which can be included in the appendix of the standard. ETN, Total and Frazer-Nash are currently writing the Description of Work (DoW) for the benchmark test, explaining the benefits of the study and including a clear timeline and financial overview.

After the completion of the WHRU standard, the group will focus on HRSGs and aims to submit comments for improving the current existing API standard.

Utilities are encouraged to join the Exhaust Systems Project which provides a forum to present and discuss problems experienced in the design of WRHU and HRSG systems, as well as to exchange best practices with the other project group members.

Project Goals:

Establish a technical document validated by all members of the project group.

Project Timeline:

Lead Contacts:

  • Am©lie Pesquet (Total)
  • Ole Torp (Mjorud)

Project Group Members:

ETN office:

For more information, please contact the ETN Office.