At our coal fired facility we recently replaced four of six feedwater heaters. With the recent replacement I must measure/calculate the new heater performance. I will need to do this for startup conditions of which I do not have all the desired measured parameters needed to calculate TTD...
Hi,
I'm trying to get some help doing a rough estimate calculation of the volumetric flow through and induced draft fan on a balanced draft unit without doing a performance test. Here is the data that I have available to me in our historian:
- fan inlet & outlet pressures
- fan inlet...
Hi,
I'm trying to get some help doing a rough estimate calculation of the volumetric flow through and induced draft fan on a balanced draft unit without doing a performance test. Here is the data that I have available to me in our historian:
- fan inlet & outlet pressures
- fan inlet...
I was looking to see what reccomendations/options anyone had on cleaning a new steam supply for a 1st point feedwater heater after construction. I have been looking at some startup documents, but no good information is available for feedwater supply lines (lots on main steam line "steam blows")...
I have a startup situation which is quite puzzling:
A ~10 mile, 4 inch anhydrous ammonia pipeline supplies ammonia to our plant process. The line is ~4 foot underground throughout except where it crosses under rail crossings and in two locations where it goes under river.
Initially, the line...
I have a Fisher 627WH pressure regulator, used in anhydrous ammonia service. This valve was originally going to see up to ~750 psig and drop it down to 300 psig, but now is only seeing about 150 psig. I am seeing excessive pressure drop across it, ~100 psig! It doesn't make any sense, the valve...
Are there any codes that dictate periodic functional testing of anhydrous ammonia pressure relief valves? I have checked ANSI K61.1 and the only requirement is for visual inspection. The vendor (Anderson Greenwood) also does not have a recommendation. The valves will be replaced every 5 years...
I have a Corken side channel magnetic drive pump used as backup to main ammonia supply pipeline. The pipeline is very realiable, maybe only one outage annually for about 6-8 hours. Our pumps are used to transfer anhydrous ammonia from tanker truck to our process at low flows. Beacause it is...
Hi,
I've been asked to review if a particular pump can overpressure a piping system. The piping system is 300# class and the pumps are centrifugal type pumping anhydrous ammonia. What are the different things I need to look at? Is it just shut-off head? Or do I have to look at the pump curve...
I have a water bath type ammmonia vaporizer in which the required supply ammonia operating range is 180 - 240 psig. The water bath temperature is set at 180 deg. F. The vaporizer vendor only wants single phase liquid ammonia being supplied to their equipment. I may need to bypass booster pumps...
