Answer:
change in enthalpy for 1 lb water is - 970.10872 Btu
Explanation:
Given data:
weight of water 1 lb
pressure 1 atm
temperature 212 Fahrenheit
From steam table
initial enthalpy [tex]h_1 = 1150.288 Btu/lb[/tex]
final enthalpy[tex] h_2 = 180.18 Btu/lb[/tex]
change in enthalpy is given as
[tex]\Delta h = m (h_2 -h_1)[/tex]
[tex]\Delta h = 1\times ( 180.18020 - 1150.288)[/tex]
[tex]\Delta h = - 970.10872 Btu[/tex]
change in enthalpy for 1 lb water is - 970.10872 Btu
