3. Air in a closed vessel of fixed volume 0.25 m3 exerts pressure of 17 bar at 255 °C. If the vessel is cooled so that the pressure falls to 4.7 bar, determine the final pressure, heat transfer and change of entropy. Given Data: V1 = 0.25 m3 P1 = 17 bar = 1700 KN/m² T1 = 255°C = 528 K p2 = 4.7 bar = 470 KN/m² To find: 1) The final pressure 2) Heat transfer 3) Change of entrony

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Laws of thermodynamics

Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrence of processes, and physiological functions can be predicted with this field.