How to calculate heat flow in a Heat Exchanger when condensing?
How to calculate heat flow in a Heat Exchanger when condensing?
(OP)
Hi Everyone,
I have a question regarding calculating heat flow in a heat exchanger when condensing is happens. I'm aware that the equation is Q = mHvap, however, my question is, how do I calculate Hvap?
Example:
Shell (Produced Gas) and Tube (Boiler Feed Water) where the BFW is being heated by the PG. The PG begins to condense.
I have all the process parameters i.e. inlet/outlet temperature & pressures. As well as the flow of PG.
The only unko=nown is the Hvap of PG, how do I obtain this value?
I appreciate any comments or thoughts.
Thanks,
Wil
I have a question regarding calculating heat flow in a heat exchanger when condensing is happens. I'm aware that the equation is Q = mHvap, however, my question is, how do I calculate Hvap?
Example:
Shell (Produced Gas) and Tube (Boiler Feed Water) where the BFW is being heated by the PG. The PG begins to condense.
I have all the process parameters i.e. inlet/outlet temperature & pressures. As well as the flow of PG.
The only unko=nown is the Hvap of PG, how do I obtain this value?
I appreciate any comments or thoughts.
Thanks,
Wil





RE: How to calculate heat flow in a Heat Exchanger when condensing?
RE: How to calculate heat flow in a Heat Exchanger when condensing?
If it's a multicomponent mixture then things are more difficult, a procedure can utilize a EOS to calculate enthalpy departures from ideal gas, then latent heat is calculated as
Enthalpy Vapor - Enthalpy Liquid
You may find several tools in the net, I use Refprop (NIST.gov) and Properties (Prode.com) for both of these free versions are available.