Hi,
Im looking into water hammer at the moment. I am trying to figure out whether or not my lines are at risk from water hammer stresses.
I have found a design guide which tells me that if t>3L/Vsound then water hammer is not a problem.
t = valve closing time
L = length of column of fluid...
Hi,
I was recently doing some work where I wound up looking at gas densities at different pressures. It got me thinking about values for the universal gas constant, R. At this stage I have seen many different values and units, from 287.05 J/kgK (for air) to 0.08205746 L.atm/K.mol.
My question...
Hi all,
I recently posted a question about nitrogen purging calculations in this forum. Im glad to say that I have resolved my earlier question, but I now have something of a follow up!!
On our plant, we are planning on generating nitrogen at 6-8BarG, distributing it at 3BarG and supplying it...
Guys,
I wonder if any of you would have access to the archives of the journal "Industrial & Engineering Chemistry Research".
I would be very interested in seeing a copy of an article from 1943, the reference is as follows:
Watson, K.M. Ind. Eng. Chem., 35, 398 (1943)
Thanks
Niall
All,
thanks for the help. I have used the C-C eqn, and have gotten an answer which seems to have met with some general agreement.
Your help is greatly appreciated.
Cheers
Niall
Thanks 25362,
I had considered using that expression, but I was under the impression that it was just for phase change operations, or does the question of boiling point presuppose a phase change and as such this expression is valid to use here?
Im sorry, my thermo is a little rusty!!
Niall
Hi all,
I have a question regarding the prediction of a boiling point of an oil at varying pressures.
I have a natural/essential oil whose thermodynamic properties I know at 1atm. The properties I have are density, viscosity, specific heat capacity, latent heat of vapourisation and its vapour...
25362,
Unfortunately, the tanks are being designed to withstand only a very small amount of over pressure, once the pressure gets above 1.03BarA there is a relief valve that goes.
What I was wondering was if you knew of any fudge factor that I could use to allow for incomplete mixing etc?
Cheers...
Hi,
Im working on trying to figure out how much N2 is required to inert a vessel such that the final O2 conc. within the vessel is <= 2%.
I have done some sums which indicate that ideally 3.5 tank volumes would be required to do this. The other engineers in my office generally agree that this...
Who isn't a "free market capitalist". The problem is that we do not in general work in a "free market". As long as there are unions, this debate will exist. I would not say that it should be requisate that an engineer should be a member of the above society, I think that it could be good if they...
All of the above sounds good to me. I think this is a topic that could be debated for a long time. I think every contributor to this thread has more or less agreed that engineers are under appreciated and under compensated (generally speaking) for our contribution to industry. I also think that...
I would 2nd (or 3rd) the sentiments of both ScottyUK (Electrical)& Ussuri (Civil/Environme. I am a member of the IEI and the IChemE and again, I feel I get very little other that journals and job adverts.
I agree with what moltenmetal (Chemical) had to say.
I wonder how difficult it would be...
