Air in a 10 ft3 cylinder is initially at a pressure of 10 atm and a temperature of 330 K. The cylinder is to be emptied by openi
ng a valve, and letting the pressure drop to that of the atmosphere. What will be the temperature and mass of the gas in the cylinder if this is done?In a manner which maintains the temperature of the gas at 330 K?
2 answers:
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Answer:
Explanation:
Let assume that heating process occurs at constant pressure, the phenomenon is modelled by the use of the First Law of Thermodynamics:
The specific enthalpies are:
Liquid-Vapor Mixture:
Saturated Vapor:
The thermal energy per unit mass required to heat the steam is: