Method and system for generating power from low- and mid- temperature heat sources using supercritical rankine cycles with zeotropic mixtures

US9376937B2 · kind B2 · utility

Assignee

• University of South Florida · US

Inventors

• D. Yogi Goswami · Deltona, US
• Huijuan Chen · Webster, US
• Elias K. Stefanakos · Tampa, US

Key dates

• Filing date: Aug 22, 2012
• Grant date: Jun 28, 2016
• Expiry date: Aug 22, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01K25/08
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method and system for generating power from low- and mid-temperature heat sources using a zeotropic mixture as a working fluid. The zeotropic mixture working fluid is compressed to pressures above critical and heated to a supercritical state. The zeotropic mixture working fluid is then expanded to extract power. The zeotropic mixture working fluid is then condensed, subcooled, and collected for recirculation and recompression.