Blowdown flow in a power boiler
Blowdown flow in a power boiler
(OP)
Hi!
I have a problem, the measuring of blowdown flow in a power boiler is erratic, the meter is a DP transmitter (0-100"WC @ 0-8 m3/h)with a orifice-plate, I thinking that is not good, the contractor says that the water to this pressure and temperature (1000 psi @ 552°F) is "flashing".
So, anybody knows other form of measuring this current.
Regars
I have a problem, the measuring of blowdown flow in a power boiler is erratic, the meter is a DP transmitter (0-100"WC @ 0-8 m3/h)with a orifice-plate, I thinking that is not good, the contractor says that the water to this pressure and temperature (1000 psi @ 552°F) is "flashing".
So, anybody knows other form of measuring this current.
Regars





RE: Blowdown flow in a power boiler
Perhaps describe your installation better, someone here will have done something similar, do you use condensate pots on the orifice installation?
Is the plate before or after the valve?
Attach a sketch if you can.
Roy
RE: Blowdown flow in a power boiler
In order to prevent it - it will be halpfull to keep the pressure a bit higher then the flash point.
Regarding flow measurment, I would try and use V-Cone flow meter - work beter then the Orifice.
ht
You can also try the Rosemount Conditioning Orifice Plate
http://www
It says it has beter performace then regular Orifice
ilan
RE: Blowdown flow in a power boiler
Roy, It doesn't have condensate pot and it's before the valve