Waste heat emissions derived from cooling systems of the thermal power plant often discharged in rivers, lakes and seas, have been the direct cause of environmental problems to marine life. To control those wastewater discharge in the receptor water body, governmental standards have been created to act as limiting factors for the additional power generation of these plants. The problem can be solved with an organic Rankine cycle (ORC), which is considered a promising technology in electric generation and an alternative to avoid the thermal pollution of the aquatic ecosystems. The present work discusses the use of ORC system aiming to increase both thermal and overall efficiency of traditional systems already established without causing an additional thermal impact on marine species. This evaluation was based on the first and second laws of thermodynamics, applied to seven organic fluids ...

Waste heat emissions derived from cooling systems of the thermal power plant often discharged in rivers, lakes and seas, have been the direct cause of environmental problems to marine life. To control those wastewater discharge in the receptor water body, governmental standards have been created to act as limiting factors for the additional power generation of these plants. The problem can be solved with an organic Rankine cycle (ORC), which is considered a promising technology in electric generation and an alternative to avoid the thermal pollution of the aquatic ecosystems. The present work discusses the use of ORC system aiming to increase both thermal and overall efficiency of traditional systems already established without causing an additional thermal impact on marine species. This evaluation was based on the first and second laws of thermodynamics, applied to seven organic fluids ...