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Title:
ENERGY RECOVERY SYSTEM
Document Type and Number:
WIPO Patent Application WO2005021936
Kind Code:
A3
Abstract:
An energy recovery system, for extracting energy from a source of waste heat (e.g., hot waste fluid from small industrial installations, automotive combustion engines, etc.) the system being a closed Rankine cycle system with a circulating working fluid. The system comprises: a first heat exchanger for receiving source fluid, incorporating the waste heat, at a first temperature and outputting said waste fluid at a second temperature, and for receiving said working fluid at a third temperature and outputting the working fluid at a fourth temperature, said fourth temperature being higher than said third temperature and higher than the boiling point of the working fluid; a turbine unit, arranged to receive the working fluid output from the first heat exchanger at a first pressure and to output the working fluid at a second pressure, said second pressure being lower than the first pressure, the turbine unit thereby imparting rotational energy to a turbine shaft mounted within the turbine unit; an electromechanical conversion unit (including an alternator), coupled to the turbine shaft, for converting said rotational energy into electrical energy, a cooling system, coupled to the turbine unit and to the first heat exchanger, for receiving the working fluid from the turbine unit at a fifth temperature, cooling the fluid, and supplying the fluid to the first heat exchanger at said third temperature. A technique for controlling the output power of the alternator is also disclosed. Special turbine, bearing, torque coupling, power control and working fluid purification techniques are also disclosed.

Inventors:
BIDDLE RICHARD JAMES (GB)
BIDDLE MYM (GB)
SIMCOCK MIRIAM (GB)
MAGUIRE JONATHAN (GB)
Application Number:
EP2004009580W
Publication Date:
June 23, 2005
Filing Date:
August 27, 2004
Export Citation:
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Assignee:
TTL DYNAMICS LTD (GB)
FREEPOWER LTD (GB)
BIDDLE RICHARD JAMES (GB)
BIDDLE MYM (GB)
SIMCOCK MIRIAM (GB)
MAGUIRE JONATHAN (GB)
International Classes:
B01D53/00; F01D15/10; F01D25/16; F01D25/22; F01K25/08; F02G5/00; F02G5/02; F02G5/04; F16C17/10; F16C33/10; F16N15/00; H02K5/128; H02K7/18; H02K49/10; (IPC1-7): F01K23/06; F01K23/10; F02C6/18; F02G5/02
Domestic Patent References:
WO1998025019A11998-06-11
Foreign References:
US20020047267A12002-04-25
EP1249580A12002-10-16
US3234735A1966-02-15
EP0098481A21984-01-18
EP1016775A22000-07-05
US4468923A1984-09-04
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