Isobaric Process - Entropy
Isobaric process is a thermodynamic process where the pressure is kept constant, \(\Delta p = 0\).
Isobaric process - entropy Formulas |
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\(\large{ S = \Delta S \; C_p \; \left[ ln \left( \frac{T_f}{T_i} \right) \right] }\) \(\large{ S = \Delta S \; \left( n\; C_v \right) \; \left[ ln \left( \frac{T_f}{T_i} \right) \right] }\) |
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| Symbol | English | Metric |
| \(\large{ S }\) = entropy | \(\large{\frac{Btu}{lbm-R}}\) | \(\large{\frac{kJ}{kg-K}}\) |
| \(\large{ \Delta S }\) = change in entropy | \(\large{\frac{Btu}{lbm-R}}\) | \(\large{\frac{kJ}{kg-K}}\) |
| \(\large{ C_p }\) = heat capacity at constant pressure | \(\large{\frac{Btu}{R}}\) | \(\large{\frac{kJ}{K}}\) |
| \(\large{ C_v }\) = heat capacity at constant volume | \(\large{\frac{Btu}{R}}\) | \(\large{\frac{kJ}{K}}\) |
| \(\large{ ln }\) = natural logarithm | \(\large{dimensionless}\) | |
| \(\large{ n }\) = number of moles | \(\large{dimensionless}\) | |
| \(\large{ T_f }\) = final temperature | \(\large{R}\) | \(\large{K}\) |
| \(\large{ T_i }\) = initial temperature | \(\large{R}\) | \(\large{K}\) |
Tags: Temperature Equations Pressure Equations Entropy Equations