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Closed cycle brayton cycle system and method

A Brayton cycle, closed cycle technology, applied in the system field, can solve the problems of high efficiency of the closed Brayton cycle system

Inactive Publication Date: 2012-03-14
NUOVO PIGNONE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, existing closed Brayton cycle systems are not very efficient

Method used

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  • Closed cycle brayton cycle system and method
  • Closed cycle brayton cycle system and method
  • Closed cycle brayton cycle system and method

Examples

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Embodiment Construction

[0017] The following description of the exemplary embodiments refers to the accompanying drawings. The same reference numbers in different drawings indicate the same or similar elements. The following detailed description does not limit the invention. Instead, the scope of the invention is defined by the appended claims. For simplicity, the following embodiments are set forth with reference to the wording and structure of a system with an integrally geared compressor (a technique to be described later) and a multi-stage radial or axial expander. However, embodiments to be described below are not limited to these systems, but are applicable to other systems using multi-stage compressors and expanders in a closed cycle.

[0018] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosed subject mat...

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Abstract

The invention relates to a closed cycle brayton cycle system and a method. Specifically, the invention provides a method and a unit for generating energy with improved efficiency. A Brayton cycle unit includes a multistage compressor configured to compress a flowing medium; a first heat exchanger fluidly connected to the multistage compressor and configured to transfer heat from a working medium passing the first heat exchanger to the compressed flowing medium; an expander fluidly connected to the first heat exchanger and configured to expand the heated compressed flowing medium for producing a rotation of a shaft of the expander; and a second heat exchanger fluidly connected between the expander and the compressor and configured to remove heat from the expanded flowing medium. A path of the flowing medium through the unit is closed. At least one inter-cooler mechanism between first and second stages of the multistage compressor is configured to cool the flowing medium to a predetermined temperature.

Description

technical field [0001] Embodiments of the subject matter disclosed herein relate generally to systems and methods, and more particularly to mechanisms and techniques for increasing the efficiency of closed-cycle Brayton cycle systems. Background technique [0002] Over the past few years, it has become common to use gas turbines to provide thrust, power generation, etc. to most aircraft. Gas turbines operate on a Brayton cycle and have a working fluid (usually air). Gas turbines can use open or closed Brayton cycles. figure 1 The system 10 is shown operating based on an open Brayton cycle. At step 1 , fresh air is provided at the compressor 12 . After compression, the air is provided to the internal combustor 14 at step 2 . At the same time, fuel 16 is injected into combustion chamber 14 and ignited therein to heat the compressed air. After heating, the high temperature and high pressure gas from the combustor is supplied to the turbine 18 at step 3 . The exhaust gases...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C1/10F02C7/143
CPCF02C1/10
Inventor P·迪迪B·科萨马纳
Owner NUOVO PIGNONE SPA
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