Method and apparatus for generating electric power from waste heat

摘要

The method involves compressing used refrigerants by a factor of about 15 to 25, and conveying and bottom-heating the compressed refrigerants by a recuperator (17). The highly compressed bottom-heated refrigerants are conveyed by a heat exchanger i.e. preheating unit (12), and preheated. The highly compressed and preheated refrigerants are conveyed through another heat exchanger i.e. vaporization unit (11), and heated refrigerant vapor is vaporized. The heated refrigerant vapor is released in a turbine (18) i.e. turbo expansion machine. Released energy is utilized to drive a generator (19). The refrigerants are azeotrophe mixture based on perfluoropolyether and pentafluorobutane. An independent claim is also included for a device for generating electric current from waste heat.