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Exergy efficiency (also known as the second-law efficiency or rational efficiency) computes the effectiveness of a system relative to its performance in reversible conditions. It is defined as the ratio of the thermal efficiency of an actual system compared to an idealized or reversible version of the system for heat engines. It can also be described as the ratio of the useful work output of the system to the reversible work output for work-consuming systems. For refrigerators and heat pumps, it is the ratio of the actual COP and reversible COP.

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  • Exergy efficiency (also known as the second-law efficiency or rational efficiency) computes the effectiveness of a system relative to its performance in reversible conditions. It is defined as the ratio of the thermal efficiency of an actual system compared to an idealized or reversible version of the system for heat engines. It can also be described as the ratio of the useful work output of the system to the reversible work output for work-consuming systems. For refrigerators and heat pumps, it is the ratio of the actual COP and reversible COP. (en)
  • Le rendement exergétique (appelé aussi rendement selon la seconde loi ou rendement rationnel) est une grandeur permettant de calculer le rendement d’un processus en prenant en compte la deuxième loi de la thermodynamique. (fr)
  • Sprawność egzergetyczna – dla silnika cieplnego – stosunek sprawności rzeczywistego silnika pracującego pomiędzy temperaturami i do sprawności cyklu Carnota dla tych temperatur; dla ogniwa paliwowego – stosunek sprawności rzeczywistego ogniwa pracującego w temperaturze do maksymalnej teoretycznej sprawności tego ogniwa wynikającej z jej ograniczenia przez drugą zasadę termodynamiki. (pl)
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  • Exergy efficiency (also known as the second-law efficiency or rational efficiency) computes the effectiveness of a system relative to its performance in reversible conditions. It is defined as the ratio of the thermal efficiency of an actual system compared to an idealized or reversible version of the system for heat engines. It can also be described as the ratio of the useful work output of the system to the reversible work output for work-consuming systems. For refrigerators and heat pumps, it is the ratio of the actual COP and reversible COP. (en)
  • Le rendement exergétique (appelé aussi rendement selon la seconde loi ou rendement rationnel) est une grandeur permettant de calculer le rendement d’un processus en prenant en compte la deuxième loi de la thermodynamique. (fr)
  • Sprawność egzergetyczna – dla silnika cieplnego – stosunek sprawności rzeczywistego silnika pracującego pomiędzy temperaturami i do sprawności cyklu Carnota dla tych temperatur; dla ogniwa paliwowego – stosunek sprawności rzeczywistego ogniwa pracującego w temperaturze do maksymalnej teoretycznej sprawności tego ogniwa wynikającej z jej ograniczenia przez drugą zasadę termodynamiki. (pl)
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  • Rendement exergétique (fr)
  • Exergy efficiency (en)
  • Sprawność egzergetyczna (pl)
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