Recent content by Homayun

I think none of the temperatures you have specified can be that acurate: In this case it does make a difference 24.99 and 25.00C.. The LMTD is actually 30C. If you use for instance your cold inlet Temp of 24.999 C instead of 25.00 C, you'll get the 30C LMTD. The result would be the same for...

Make it the same size as N2 pipe that brings the N2, alternatively you may make it one size larger. For example, if the N2 line is a 2", you can also make the nozzle 2" or 3". That should do it.. I hope you do know what size the N2 line is!

I'd englect the vortex breaker pressure drop...

I agree with the explanation provided by "bchoate". Another way to explain this is that since the Benzene Partial pressure is lower, the dewpoint will also be lower.

I am not a process control engineer, but I thin option 3 would be the best way to control it.

Is it the intention to have a continuous burning flare system? I believe I have seen somewhere a minimum value of 3 ft/s (1 m/s) before.

Presuming that the control valve is one the outlet of the coil and that the Steam Trap is closed to the Control Valve, the line we are talking about here should be short. So in that case I don't expecte that much problem..And the line after the stea trap should be fully liquid.

Have you done a google search already? I am not an expert on this matter, but I would say first of all that with a VSD pump there is obviously no control valve. Depending what parameter you want to control, like level, flow or pressure, I would imagine that you have a measuring sensor, like a...

You need a Nitrogen blanketing control valve capable of sending equivalent to 60K BWPD in and a nitrogen blanketing valve send out equivalent to 20K BWPD.

You need to first calculate how much steam is needed to heat up your stream from 45C to 225C (exchanger duty). What is confusing is that your Pressure unit is in PSIG but your Temperature unit is in SI! After you have established what the duty is, then you simply divide that duty by the...

of course natural gas has a composition...it should..

Sometimes we would want to compare physical properties of some material against some other material at a predetermined condition. for example some times you want to know the relative density of a liquid compared to water at a given condition (specidic gravity). Some times the aparatus that...

Why don't you simply dig out your old books in the basement and crash on it for a week...that'll do the job..

You make a fairly easy evaluation by using the basic Heat Transfer formula Q=A.U.LMTD By measuring the inlet/outlet temperature on both sides you can calculate the LMTD. Further you can also estimate the Duty (Q). Then you can establish your AU value. This will be done for the base operation...

Big Inch, I guess I can't simply add the vicsous shear with the product of mass*acceleration! THe units don't match! Mass * acceleration = kg.m.S-2 Viscous SHear = kg.m-1.s-1