Fire sizing for wetted vs unwetted vessel area...
Fire sizing for wetted vs unwetted vessel area...
(OP)
Hi,
what is the dirrefence of using wetted vs unwetted area calculation approch while calculating the required RV capacity for a vessel ?
Thanks
what is the dirrefence of using wetted vs unwetted area calculation approch while calculating the required RV capacity for a vessel ?
Thanks





RE: Fire sizing for wetted vs unwetted vessel area...
To calculate the heat transferred to the vessel contents, you need to know whether the surface is wetted or unwetted. If you only have a minimal amount of wetted surface and a high amount of unwetted surface, then you should look at other methods of protecting the vessel. You still have to install a PSV for code compliance, but other protective measures such as fire resistant insulation, water spray, and automatic depressurization should also be considered.
RE: Fire sizing for wetted vs unwetted vessel area...
In my case, I'm having a bloiler feed water vessel with a desaerator in the head. The vessel is 9' ID with a normal water level in 6'-9''.
Thanks