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SYSTEM FOR RECOVERING WASTE HEAT

  • US 20100319346A1
  • Filed: 06/23/2009
  • Published: 12/23/2010
  • Est. Priority Date: 06/23/2009
  • Status: Abandoned Application
First Claim
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1. A waste heat recovery system including at least two integrated rankine cycle systems, the recovery system comprising:

  • a heat generation system comprising at least two separate heat sources having different temperatures;

    a first rankine cycle system coupled to a first heat source among the at least two separate heat sources and configured to circulate a first working fluid;

    wherein the first rankine system is configured to remove heat from the first heat source;

    a second rankine cycle system coupled to at least one second heat source among the at least two separate heat sources and configured to circulate a second working fluid, the at least one second heat source comprising a lower temperature heat source than the first heat source, wherein the second rankine cycle system is configured to remove heat from the at least one second heat source;

    a cascaded heat exchange unit, wherein the first and second working fluids are circulatable in heat exchange relationship through the cascaded heat exchange unit for condensation of the first working fluid in the first rankine cycle system and evaporation of the second working fluid in the second rankine cycle system;

    at least one recuperator comprising a hot side and a cold side disposed in the first rankine cycle system, second rankine cycle system, or combinations thereof;

    wherein the at least one recuperator is configured to desuperheat and preheat the first working fluid, second working fluid, or combinations thereof.

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