Share

Recovered energy generation using an organic Rankine cycle system.

Author(s) : LESLIE N. P., SWEETSER R. S., ZIMRON O., et al.

Summary

This paper describes the results of a project demonstrating the technical and economic feasibility of capturing thermal energy from a 35,000 hp (27 MW) gas turbine driving a natural gas pipeline compressor with a recovered energy generation (REG) system to produce 5.5 MW of electricity with no additional fuel and near-zero emissions. The REG is based on a modified organic Rankine cycle (ORC). Other major system elements include a waste-heat-to-oil heat exchanger with bypass, oil-to-pentane heat exchanger with preheater, recuperator, condenser, pentane turbine, generator and synchronizing breaker, and all power and control systems required for the automatic operation of the REG. When operating at the design heat input available from the gas turbine exhaust, the REG system consistently delivered 5.5 MW or more output to the grid at up to 15% heat conversion efficiency. The REG system improved the overall energy efficiency by 28%, from 32% simple cycle efficiency to 41% for the combined system. Significant lessons learned from this project are discussed, as well as measured performance and economic considerations.

Details

  • Original title: Recovered energy generation using an organic Rankine cycle system.
  • Record ID : 2009-2538
  • Languages: English
  • Source: ASHRAE Transactions. Papers presented at the 2009 ASHRAE Winter Conference: Chicago, Illinois, January 2009. Volume 115, part 1.
  • Publication date: 2009/01/25

Links


See other articles from the proceedings (20)
See the conference proceedings

Indexing