Share

Analysis of a rotating spool expander for Organic Rankine Cycles in heat recovery applications.

Number: pap. 1446

Author(s) : KRISHNA A., BRADSHAW C., GROLL E.

Summary

A comprehensive simulation model of the rotating spool expander is presented. The simulation model includes detailed submodels for the geometry, suction valve mechanism, massflow, leakage and heat transfer processes. The results of the model reveal several details concerning the impact of design variables on performance. For example, the match between the design expansion ratio and the system imposed pressure ratio has a large influence on the performance of the expander. The reasons for this are analyzed, and further exploration shows that under-expansion is preferable to over-expansion to achieve better performance. The model is also able to provide insights on the dominant leakage paths in the expander. Additional insights can be obtained to assess the sensitivity of various design variables on expander performance. In future work, the model predictions will be validated using experimental data from a 50 kW prototype spool expander.

Available documents

Format PDF

Pages: 10 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Analysis of a rotating spool expander for Organic Rankine Cycles in heat recovery applications.
  • Record ID : 30014087
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

Links


See other articles from the proceedings (138)
See the conference proceedings

Indexing