Question: The saturation pressure can be approximated as In Psat = A B/T, where A and B are constants. Use the steam tables and determine

The saturation pressure can be approximated as In Psat = A – B/T, where A and B are constants. Use the steam tables and determine A and B from properties at 25oC only. Use the equation to predict the saturation pressure at 30oC and compare to table value.

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ln P sat A BT dP sat dT P sat BT2 so we notice from Eq137 and Table values from B11 and A5 ... View full answer

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