Question

Using the steam tables, determine the enthalpy change for 1lb of water:

Answer 1

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 $h_1 = 1150.288 Btu/lb$

final enthalpy$h_2 = 180.18 Btu/lb$

change in enthalpy is given as

$\Delta h = m (h_2 -h_1)$

$\Delta h = 1\times ( 180.18020 - 1150.288)$

$\Delta h = - 970.10872 Btu$

change in enthalpy for 1 lb water is - 970.10872 Btu