Dear All,
I am in the middle of calculating the heat absorbed in order to vaporise incoming BFW into 80% steam.
Inlet condition:
-108°C
-52056kg/hr
Outlet condition:
-331.7°C
-80% steam
At 133kg/cm2
Required Heat Absorbed = mcdT + mHv
The total heat duty for the OTSG is 100MMBTU/hr and my findings regarding required heat absorbed is around 90MMBtu/hr (with specific heat capacity: 4.18J/g.K and Hv: around 1120KJ/Kg). However, the calculation I received from 2 vendors is around 97++MMBtu/hr. I've been trying with trial and error with vendors' data and realising that my data could be wrong. May I know:
1. What is the value of specific heat capacity at 133kg/cm2 (is it around 7.++)??
2. I think my value for latent heat of vaporization could be wrong too. Please let me know.
3. As per my research these few days, the properties of water and steam vary greatly with the changes of pressure. Where can I get the full table regarding properties of steam and water?
Thank you.