High pressure fire relief - water
High pressure fire relief - water
(OP)
I have got a vessel with a design pressure of 210 barg.
The fluid into the vessel is natural gas from an underground storage (formation not cavern) - water wet.
The vessel design pressure is higher than the well shut-in pressure so the relevant design acse is "fire".
My problem is that Pc for water is 220 barg - below 211 bara+21%=254 barg.
Now what heat of evaporation do i then assign?
at 210 barg the heat of evaporation is 453 kj/kg but it goes toward 0 at Pc=220 bar.
Should i just use the heat of evaporation at 210 barg?
Best regards
Morten
The fluid into the vessel is natural gas from an underground storage (formation not cavern) - water wet.
The vessel design pressure is higher than the well shut-in pressure so the relevant design acse is "fire".
My problem is that Pc for water is 220 barg - below 211 bara+21%=254 barg.
Now what heat of evaporation do i then assign?
at 210 barg the heat of evaporation is 453 kj/kg but it goes toward 0 at Pc=220 bar.
Should i just use the heat of evaporation at 210 barg?
Best regards
Morten





RE: High pressure fire relief - water
Larry
RE: High pressure fire relief - water
But my questin was more related to how to calculate the load. I must check with regards to the RV - but i recon i will use the API steam famula (section 3.7.1 with a supreheat correction factor as for 3000 psi even thoug 210 barg+21% is 3700 psi?
Best regards
Morten