Gas turbine engine system equipped with Rankine cycle engine

Patent metadata

Field	Value
Publication number	US-9453434-B2
Application number	US-201314390282-A
Country	US
Kind code	B2
Filing date	Apr 2, 2013
Priority date	Apr 5, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A combined-type gas turbine engine system is provided which achieves high efficiency by very effectively using exhaust heat from a gas turbine engine. In a gas turbine engine system including: a compressor for compressing a first working medium; a heater for heating the compressed first working medium by an external heat source; a turbine for outputting power from the first working medium; an intermediate cooler provided at the compressor for cooling the first working medium compressed by a low-pressure compression part of the compressor and supplying the first working medium to a high-pressure compression part of the compressor; and an exhaust heat boiler using as a heating medium an exhaust gas from the turbine, a Rankine cycle engine using the intermediate cooler and the exhaust heat boiler as heat sources and a cooling medium of the intermediate cooler as a second working medium.

First claim

What is claimed is:

1. A gas turbine engine system comprising:
a compressor configured to compress a first working medium, the compressor comprising a low-pressure compression part and a high-pressure compression part;
a heater configured to heat the compressed first working medium utilizing an external heat source;
a turbine configured to output power from the first working medium; and
a Rankine cycle engine comprising:
an intermediate cooler provided at the compressor; and
an exhaust heat boiler configured to:
use an exhaust gas discharged from the turbine as a heating medium of a second working medium,
cool the first working medium compressed by the low-pressure compression part of the compressor, and
supply the first working medium to the intermediate cooler,

wherein the intermediate cooler is configured to:
further cool the first working medium cooled by the exhaust heat boiler using the second working medium as a cooling medium of the first working medium,
supply the first working medium to the high-pressure compression part,
heat the second working medium, and
supply the second working medium to the exhaust heat boiler.

2. The gas turbine engine system as claimed in claim 1 , wherein the second working medium is an organic substance.

3. The gas turbine engine system as claimed in claim 1 , wherein the second working medium flowing from the intermediate cooler into the exhaust heat boiler is a superheated gas.

4. The gas turbine engine system as claimed in claim 1 comprising, as the heater, a solar heater configured to heat the first working medium utilizing sunlight as a heat source.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Tanimura Kazuhiko
• Tanaka Ryozo
• Sugimoto Takao
• Morishita Hiroshi
• Kusterer Karsten
• Bohn Dieter
• Braun Rene

Classifications

• Y02E20/16

  Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT] · CPC title

• F02C7/08

  Heating air supply before combustion, e.g. by exhaust gases · CPC title

• Y02E20/14

  Combined heat and power generation [CHP] · CPC title

• Y02E10/46

  Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines · CPC title

• F02C7/143

  before or between the compressor stages · CPC title