Dear nagrajh
You must first get the venturi meter Head Vs Flow curve for different temp. Then only it will be possible for you to caliberate. Hence, this shall be obtained from the flow meter supplier only . Otherwise , no one can help it as the flow meter contant varies from supplier to...
Recent boilers are designed with a provision to add one or two loops on economiser. Hence , You may look in to the possibility of adding coil length in economiser to bring down the temp. of flue gas. But , one has to study the corresponding heat transfers in all areas both upstream and dwon...
We should also see that any flow orifice measurement is given . Becasue they also contribute a major pressure drop. Also , we need to consider the pressure loss on eco coils and LP heaters etc. if they are in series after the pump discharge. Hence , calculation of design head for pump depends on...
Before introducing an equipment between Air heater and ESP , the following points are to be considered :
1, The layout/space availability to accomodate the equipment.
2. If wet scrubber is introduced , the outlet gas temp. will be around 85 to 100 deg. C which is not preferable for down stream...
