A high efficiency dual shell stirling engine

F - Mech Eng,Light,Heat,Weapons – 02 – G

Patent

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F02G 1/043 (2006.01) F02G 1/053 (2006.01)

Patent

CA 2399815

A Stirling engine which uses a dual pressure shell surrounding the high pressure and temperature engine components. Space between the shells is filled with an incompressible and insulating liquid material, such as a liquid salt. The liquid may have a filler material to prevent excessive movement. The liquid provides a time varying pressure field, driven by the pressure variations in the Stirling engine working fluid, which cancels the pressure differential on heat transfer tubing. A continuous heat extraction burner reduces flame temperature and nitrous oxide emissions from the burner. The combination described provides a Stirling engine that operates at significantly higher temperatures and pressures relative to existing technology.

L'invention concerne un moteur Stirling utilisant deux enveloppes sous pression qui entourent des composants de moteur à des pression et température élevées. L'espace situé entre les enveloppes est rempli d'un matériau liquide incompressible et isolant, tel qu'un sel liquide. Le liquide peut comprendre une charge qui empêche un déplacement excessif. Ce liquide produit un champ sous pression variant avec le temps, commandé par les variations de pression du liquide de travail du moteur Stirling, ce qui annule le différentiel de pression sur le tube de transfert de pression. Un brûleur à extraction thermique continue réduit la température de la flamme et les émissions d'oxyde nitreux provenant dudit brûleur. La combinaison décrite permet d'obtenir un moteur Stirling fonctionnant à des températures et des pressions plus élevées que celles des technologies existantes.

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