A polytropic process is a thermodynamic process that obeys the relation: p V n = C {\displaystyle pV^{\,n}=C} where p is the pressure, V is volume, n is the polytropic index , and C is a constant. The polytropic process equation can describe multiple expansion and compression processes which include heat transfer. If the ideal gas law applies, a process is polytropic if and only if the ratio (K) of energy transfer as heat to energy transfer as work at each in...