- #1
matt222
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Homework Statement
If the inventory of the reactor of about 20,000kg of Zr given the reaction:
Zr+2H2O---> ZrO2+2H2, Q=616MJ/Kg-mole of Zr
1- find the 10% of the heat generated from Zr oxidation by steam in MJ
2- Find the 10% hydrogen generated from Zr oxidation by steam in kg and the volume fraction (given initial pressure 1 bar and volume 90,000m^3, treat hydrogen as an ideal gas.
3- what is the energy released from the combustion of H generated and what will be the power if it is released within 10s, assumption is the amount of Oxygen is enough to burn the total H generated, heat of combustion is 240MJ/Kg-mol
4- what will be the pressure increased by the H generation from 10% oxidation given initial pressure 1 bar and volume 90,000m^3, treat hydrogen as an ideal gas, ignorw the T rise.
Homework Equations
The Attempt at a Solution
1- it is simple :
molar mass for Zr is 91.22 kg/kmole
10%x 20000kgx 616/91.22 =13.5x10^3 MJ
2- it is by: 2kg/kmol of 2H, so 2x13.5x10^3/(616)=43.8kg
I didnt understand the second part of volume fraction?
3- energy release from the combustion of H:
H2+1/2O2---->H2O+ 240MJ/Kgmol
240x43.8=10.51x10^3MJ
the power is going to be:
10.51x10^3MJ/10=10.51x10^2MW
4-I have no idea but I need a hint
is my work true