Formula  Units  

Total Work 


Thermal Efficiency 


Carnot Thermal Efficiency 


The Net Power of Heat Engine 


Coefficient of Performance 


Real Heat Pump 


Energy Efficiency Rating 


Clausius Inequality 


Entropy 

kJ/K 
Change of Entropy 

kJ/K 
Specific Entropy 

kJ/K 
Entropy Change 

kJ/K 

Isothermal Heat Transfer:  
Reversible Adiabatic (Isentropic Process):  
Reversible Isothermal Process:  
Reversible Adiabatic (Isentropic Process): Entropy decrease in process 34 = the entropy increase in process 12.  



Entropy Generation 


Principle of the Increase of Entropy 


Entropy Change  






Constant Volume: Constant Pressure: Constant Specific Heat: 

Standard Entropy 


Change in Standard Entropy 


Ideal Gas Undergoing an Isentropic Process 


Reversible Polytropic Process for Ideal Gas 






