Leif Bergquist

US Patent:

53919254, Feb 21, 1995

Filed:

Sep 10, 1993

Appl. No.:

8/118629

Inventors:

Thomas Casten - Hartsdale NY
Goran Mornhed - Croton-on-Hudson NY
Leif Bergquist - Monroe NJ
John M. Malahieude - Mamaroneck NY

Assignee:

Trigen Energy Corporation - White Plains NY

International Classification:

F25B 2700
F02C 600

US Classification:

290 1R

Abstract:

A method of driving a large cooling system having a compressor operating as a chiller driven by a prime mover, such as a gas turbine, reciprocating engine or steam turbine, in conjunction with an electric motor/generator coaxially arranged on a common shaft with the other units, so that as the ambient temperature rises and the power needed to produce the cooling output increases, and as there is a corresponding drop in power output if the prime mover is a gas turbine or condensing steam turbine, the required additional driving power is supplied by the motor. Conversely, as the ambient temperature drops and required cooling power lessens, the electric motor operates as a generator to convert the excess prime mover power to electrical power.