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Efficient heat recovery engine

An engine, heat recovery technology, applied in the direction of hot gas variable capacity engine devices, machines/engines, mechanical equipment, etc., can solve problems such as loss of simplicity

Active Publication Date: 2020-05-08
CAPRICORN POWER PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This way the simplicity is lost

Method used

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  • Efficient heat recovery engine
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Embodiment Construction

[0047] refer to figure 1 , this paper discloses a closed-circuit heat exchange piston-cylinder Brayton cycle heat recovery engine 5 . The gas stream at base system pressure 10 is compressed by compressor 15, thus increasing the pressure and temperature of the gas stream. The gas stream leaving compressor 15 is passed to recuperator 20 to receive heat energy from the gas stream leaving expander 30 . In recuperator 20, the temperature of the gas stream leaving compressor 15 is raised at approximately constant pressure. The gas flow leaving recuperator 20 is passed to heater 25 where the temperature is raised to a peak operating temperature at approximately constant pressure. The gas stream leaving heater 25 is passed to expander 30 where expansion occurs and the pressure of the gas stream is reduced to just above the base system pressure, and the temperature and density are also reduced. The gas stream leaving expander 30 is passed to recuperator 20 where, as noted, thermal e...

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Abstract

A heat recovery engine (5) includes a compressor (15) to increase pressure, density and temperature of a gas stream flowing in a closed loop within the engine, with the gas stream at base system pressure (10) at a compressor inlet; an expander (30) to reduce the pressure of said gas stream when compressed to just above said base system pressure, at the same time receiving power from the gas stream; a recuperator (20) to transfer thermal energy from downstream gas stream of said expander (30) to downstream gas stream of said compressor (15), thereby increasing the temperature of said downstreamgas stream of said compressor (15) at approximately constant pressure; a heater (25) to provide further heat energy to said gas stream at approximately constant pressure after exit from said recuperator (20); a heat source (40) and a means (45) for transferring heat energy from said heat source (40) to said heater (25); a cooler (35) to cool said gas stream prior to compression in said compressor; a heat energy transfer device to transfer heat from said cooler (35) to the environment; an operability device to ensure the operation of said compressor and said expander, and to take off surplus power either mechanically or electrically; a plurality of insulated ducts to transfer said gas stream between said compressor (15), recuperator (20), heater (25), expander (30) and cooler (35).

Description

technical field [0001] The present invention relates to the generation of electricity via an improved system featuring a Brayton cycle gas engine having a heat exchange function for engine exhaust heat. Background technique [0002] As the public becomes increasingly concerned about the release of carbon dioxide into the atmosphere and the depletion of fossil fuels, more and more emphasis is placed on energy efficiency, the use of renewable energy and better use of available resources. Other important considerations are reducing the capital cost of generating equipment and avoiding detrimental environmental or social impacts. It is desirable to develop efficient engines that can be powered by widely available heat sources such as industrial process waste heat, engine exhaust heat, biogas from anaerobic digestion, landfill gas, biomass combustion, solar thermal energy, and the like. Such devices are commonly referred to as heat recovery engines. [0003] Almost all heat rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G1/044F02C1/10
CPCF02G1/044F01K7/00F01K23/06F02C1/105F02G1/055F02G1/057
Inventor N·G·巴顿
Owner CAPRICORN POWER PTY LTD