Multi-level organic rankine cycle power system

A waste heat recovery system utilizing a working fluid comprising:

• a high pressure vapor turbine receiving high pressure working fluid vapor and producing power and low pressure working fluid vapor;
• a low pressure vapor turbine receiving said low pressure working fluid vapor and producing power and expanded working fluid vapor;
• a recuperator receiving said expanded working fluid vapor and producing heat-depleted expanded working fluid vapor;
• a condenser receiving said heat-depleted expanded working fluid vapor and producing condensate, a first portion of said condensate recycled to said recuperator to produce heated condensate and said heat-depleted expanded working fluid vapor;
• a first vaporizer receiving a second portion of said condensate and configured to receive heat from a low-temperature heat source, thereby producing low pressure working fluid vapor;
• and
• a second vaporizer receiving said heated condensate and configured to receive heat from a high-temperature heat source, thereby producing said high pressure working fluid vapor.

A waste heat recovery system utilizing a working fluid comprising:

• a high pressure vapor turbine receiving high pressure working fluid vapor and producing power and expanded high pressure working fluid vapor;
• a low pressure vapor turbine receiving low pressure working fluid vapor and producing power and expanded low pressure working fluid vapor;
• a condenser receiving said expanded high pressure working fluid vapor and said expanded low pressure working fluid vapor and producing condensate;
• a first vaporizer receiving a first portion of said condensate and configured to receive heat from a low-temperature heat source, thereby producing said low pressure working fluid vapor;
• and
• a second vaporizer receiving a second portion of said condensate and configured to receive heat from a high-temperature heat source, thereby producing said high pressure working fluid vapor.

A waste heat recovery system utilizing a working fluid comprising:

• a high pressure vapor turbine receiving high pressure working fluid vapor and producing power and expanded high pressure working fluid vapor;
• a recuperator receiving said expanded high pressure working fluid vapor and producing heat-depleted expanded high pressure working fluid vapor;
• a first condenser receiving said heat-depleted expanded high pressure working fluid vapor and producing first condensate, said first condensate recycled to said recuperator to produce heated condensate and said heat-depleted expanded high pressure working fluid vapor;
• a first vaporizer receiving said heated condensate and configured to receive heat from a high-temperature heat source, thereby producing said high pressure working fluid vapor;
• a low pressure vapor turbine receiving low pressure working fluid vapor and producing power and expanded low pressure working fluid vapor;
• a second condenser receiving said expanded low pressure working fluid vapor and producing second condensate;
• a second vaporizer receiving said second condensate and configured to receive heat from a low-temperature heat source, thereby producing said low pressure working fluid vapor;
• and
• a generator connected to said high pressure vapor turbine and said low pressure vapor turbine for producing power.