Cascading closed loop cycle power generation

F - Mech Eng,Light,Heat,Weapons – 01 – K

Patent

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F01K 25/06 (2006.01) F01K 25/08 (2006.01)

Patent

CA 2493155

Cascading Closed Loop Cycle (CCLC) (100) and Super Cascading Closed Loop Cycle (Super-CCLC) systems are described for recovering power in the form of mechanical or electrical energy from the waste heat of a steam turbine system. The waste heat from the boiler (106) and steam condenser (118) is recovered by vaporizing propane or other light hydrocarbon fluids in multiple indirect heat exchangers (110, 114); expanding the vaporized propane in multiple cascading expansion turbines (108, 116) to generate useful power; and condensing to a liquid using a cooling system. The liquid propane is then pressurized with pumps (102) and returned to the indirect heat exchangers to repeat the vaporization, expansion, liquefaction and pressurization cycle in a closed, hermetic process.

L'invention concerne des systèmes à cycle en boucle fermée en cascade (CCLC) (100) et super cycle en boucle fermée en cascade (Super-CCLC) destinés à récupérer de l'énergie sous forme d'énergie mécanique ou électrique à partir de la chaleur résiduelle d'un système à turbine à vapeur. La chaleur résiduelle de la chaudière (106) et du condensateur (118) de vapeur est récupérée par vaporisation de propane ou d'autres fluides d'hydrocarbures légers dans de multiples échangeurs de chaleurs indirects (110, 114); par expansion du propane vaporisé dans de multiples turbines (108, 116) d'expansion en cascade afin de générer de l'énergie utile; et par condensation en liquide à l'aide d'un système de refroidissement. Le propane liquide est alors pressurisé au moyen de pompes (102), puis ramené dans les échangeurs de chaleur indirects afin de répéter le cycle de vaporisation, expansion, liquéfaction et pressurisation dans un processus hermétique fermé.

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