Power Generation System And Method With Partially Recuperated Flow Path

• US 20170226901A1
• Filed: 04/24/2017
• Published: 08/10/2017
• Est. Priority Date: 02/26/2014
• Status: Active Grant

• Current Assignee: Peregrine Turbine Technologies LLC
• Original Assignee: Peregrine Turbine Technologies LLC
• Inventors: Stapp, David Scott
• Granted Patent: US 10,385,735 B2
• Time in Patent Office: Days
• CPC Class Codes: F01K 11/02 the engines being turbines
• CPC Class Codes: F01K 13/02 Controlling, e.g. stopping or starting
• CPC Class Codes: F01K 19/04 in combination with cooling or heating
• CPC Class Codes: F01K 23/02 the engine cycles being thermally coupled
• CPC Class Codes: F01K 25/103 Carbon dioxide F01K25/065 takes precedence
• CPC Class Codes: F01K 3/18 having heaters having both steam accumulator and heater F01K3/14; steam heaters per se F22
• CPC Class Codes: F01K 7/16 the engines being only of turbine type the engines using steam of critical or overcritical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34
• CPC Class Codes: F02C 1/007 combination of cycles
• CPC Class Codes: F02C 1/04 the working fluid being heated indirectly in a fluidised-bed combustor F02C3/205
• CPC Class Codes: F02C 1/10 Closed cycles
• CPC Class Codes: F02C 6/04 Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output F02C6/18 takes precedence ; for a fluidised-bed combustor F02C3/205
• CPC Class Codes: F22B 3/08 at critical or supercritical pressure values
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]

Abstract

The present disclosure relates to a power generation system and related methods that use supercritical fluids, whereby a portion of the supercritical fluid is recuperated.

Claims

1. A system configured to generate power, comprising:

a supercritical fluid cycle including a supercritical fluid compressor configured to receive and compress a supercritical fluid, a supercritical fluid turbine configured to receive and expand the supercritical fluid, a recuperating heat exchanger configured to receive discharge streams from the supercritical fluid compressor and the supercritical fluid turbine, a first valve, and a second valve;

a controller operably connected to the first valve and the second valve, the controller configured to actuate the first valve and the second valve to adjust the flow of the supercritical fluid through the supercritical fluid cycle;

an air breathing cycle configured to heat air flowing along the air breathing cycle; and

a plurality of heat exchangers arranged so that supercritical fluid from the supercritical fluid cycle and air from the an air breathing cycle passes therethrough but does not intermix,

wherein the first valve is configured to split the supercritical fluid discharged from the supercritical fluid compressor into first and second discharge streams of compressed supercritical fluid, such that a) the first discharge stream of compressed supercritical fluid flows through the recuperating heat exchanger, and b) the second discharge stream of compressed supercritical fluid flows through one set of the plurality of heat exchangers; and

the second valve is configured to split the supercritical fluid discharged from the supercritical fluid turbine into a first and second discharge streams of expanded supercritical fluid such that a) the first discharge stream of expanded supercritical fluid flows through the recuperating heat exchanger, and b) the second discharge stream of expanded supercritical fluid flows through a different set of the plurality of heat exchangers, wherein heat from the first discharge stream of expanded supercritical fluid is transferred to the first discharge stream of the compressed supercritical fluid in the recuperating heat exchanger.