My old TI-86 programmable calculator from college (mid-90's) has finally bit the dust. I had written several simple programs in the calculator that let me solve an equation by inputting values for variables. They were simple programs that did things like ask me for a temperature, pressure, and...
Does anyone have any experience with minimizing the impact that piping x-rays have on nuclear point-source level detectors. Are there any practices, (besides placing controllers in manual), that are successful with minimizing upsets to the readings?
I have a problem that I was hoping someone might have some experience with or could offer some tips/advice on. I am looking for a way to measure online a slurry concentration in a vessel.
The operation involves a small vessel, (3.5'-I.D., 4'-Tan/Tan, approximately 330 gal.), in which we mix...
I have a question about how one of the condensers in my unit is arranged. Every U-tube or two-pass exchanger in condensing service, with cooling water in the tubes, that I have seen is arranged with the water inlet on the bottom and the tubeside inlet and outlet nozzles are directly in the...
I have been told that the API guideline on maximum temperature for PD compressor discharge valves in H2 compression service is 275 deg F. Could any of you please answer if this is correct, and what is the reason for this max temperature rating?
I have been told that the API guideline on maximum temperature for PD compressor discharge valves in H2 compression service is 275 deg F. Is this true, and what is the reason for this max temperature rating? If it is immediately obvious to all of you, and you're wondering why I have to ask, I...
Could any of you please tell me where I can obtain data on the expected pressure rise in a liquid filled pipe under a hydro-static condition that is exposed to a heat flux?
In other words, if I have a blocked in pipe full of hydrocarbon, and this hydrocarbon is heated 40 degrees F, what is the...
I'm looking for some advice on injecting hot condensate into a cooling water return line.
Process conditions:
Condensate is at 300 deg F, 135 psig, flowrate = 300 gpm
Cooling Water is 90 deg F, 5 psig, flowrate = 15000 gpm
The condensate injection line would be a 2" line coming off of a...
Why are airfin exchangers built with plugs for inspection purposes? The ones I have dealt with over the last few years, (which is only about 20), always seem to be prone to leakage at these inspection plugs. The plugs and exchangers are stainless. I have been told it is difficult to get a...
Does anyone have a rule of thumb or an estimate of the flowrate of 70 psig N2 through about 100' of 3/4" utility hose? The hose/hoses will be connected to an empty reaction train sitting at 3-5 psig. I want to purge the reaction train to the flare to remove residual hydrocarbon, and I...
