Capstone Turbine Corporation

Jeff Willis

Gregory C Rouse

William Dean Treece

David A Calta

Bill Treece

According to the present disclosure, a turbogenerator system may be combined with other heat/energy sources. A simple cycle or recuperated cycle turbogenerator have a variety of fuel options and grid connect or stand alone capability that can be combined with one or more external heat sources such as a Solar Collector/Receiver Heat Energy System, a Bio-mass Gasifier/Combustor Heat Energy System, a Fuel Cell Heat/Energy System, a Nuclear Heat/Energy System, a Waste Heat/Energy System, or some other suitable Heat/Energy System. The above external heat systems can be used to provide all of part of the heat/energy input to operate the turbogenerator and achieve electrical output, as well as a turbogenerator hot exhaust flow that has potential for other uses. Using an integral turbogenerator low emission combustor and fuel control as part of these combined systems has additional advantages. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Microturbine combination systems

A closed loop Rankine bottoming cycle including a heat exchanger coupled to an exhaust port of a first turbogenerator for heating a pressurized refrigerant into a gaseous phase, and a second turbogenerator (e.g., a turbo expander) coupled to the heat exchanger for expanding the gaseous phase so as to create power. Also included is a cooling mechanism coupled to an exhaust of the second turbogenerator for cooling the gaseous phase exhausted by the second turbogenerator into a liquid phase, and a pumping mechanism for pressurizing the liquid phase into the pressurized refrigerant heated by the heat exchanger. A computer program product and method for operating and synchronizing the generator included in the closed loop, so as to optimize the overall system efficiency is also included.

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Los Angeles, CA, United States of America

Jeff Willis