An improved organic rankine cycle system and method

摘要

An ORC system (10) configured to limit temperature of a working fluid (14) below a threshold temperature is provided. The ORC system (10) includes a heat source (16) configured to provide waste heat fluid (18). The ORC system (10) also includes a heat exchanger (20) coupled to the heat source (16), wherein the heat exchanger (20) includes multiple external (82) or internal (84) enhancement features. The external (82) enhancement features are configured to reduce a first heat transfer coefficient between the working fluid (14) and the waste heat fluid (18) from the heat source (16), external to the heat exchanger (20). The internal (84) enhancement features are configured to increase a second heat transfer coefficient between the working fluid (14) and the waste heat fluid (18) from a heat source (16), internal to the heat exchanger (20).