Determine: a) The final equilibrium state, specifying T and X if it is a wet mix or T and P if there is overheating b) The work in ft* lbf c) The mass of vapor that would need to mix with the 0.020 lbm of liquid so that the final state is dry, saturated vapor at 80 psia in lbm
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
H8.
An adiabatic piston cylinder contains 0.20 lbm of saturated liquid water at 80 psia and 0.80 lbm of steam at 500°F and 80 psia. Initially, the masses are separated from each other by an adiabatic membrane. The membrane ruptures, while the pressure is maintained at 80 psia, and the system evolves to equilibrium.
Determine:
a) The final equilibrium state, specifying T and X if it is a wet mix or T and P if there is overheating
b) The work in ft* lbf
c) The mass of vapor that would need to mix with the 0.020 lbm of liquid so that the final state is dry, saturated vapor at 80 psia in lbm
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