I tried to calculate it using the global energy balance equation as follows:
d H+ d Ek+ d Ep= q + (Vm * dP)
Assuming air as Ideal Gas and Isentropic transformation and No machine:
q = 0
(Vm * dP)=0
d Ep =0 because its effect which is neglected due to very small density of the air
We'll have...
Dear zdas04!
The steps described in your message seems to be very interesting, however,I've never work out this type of problem flow . Please could you work it out and send it to me in atteched form in order to show me how.
Thanks for your help.
Hi!
I have an air cylinder that is compressed to 150 PSI with a volume of 7.3 cu in. I am trying to find out how long it will take for the 150PSI to vent down to atmospheric pressure through an opening that is 1.77mm in diameter.
Greetings
To IRstuff
It isn't for school because you're right it seems to be. But what I wanted is to analyse this two questions.
The first question deals with writing operation procedure on process eqpt (underway), and I wanted to have someboby having long experience in oil and gas operational...
Hi!
1- If you are starting up a cold steam heater and you hear a noise, what would the action to be taken?
2- What is the difference between spectacle blind and sleep plate?
Greetings
Hi!
We had a compressor with inlet pressure 14 barg to outlet one 45 barg(design) for feeding gas with(3.0 MM Sm3/d) to LPG plant. we were controlling the pressure in the unit by turboexpander control valve (Completly different from conventional pressure control valve).Now,we're planning to...
Hi TD2K!
Thanks for your reply but can you explain to me what do you mean by (What is the function of both of them) :
estimate an initial charge ???
sort of propane inventory process???
Is there a difference between them?
Greetings!
Hello everybody!
Can everybody tell me what does mean process optimization . Does it mean, the best working parameters with low energy consumption or money saving? or is there something else.
And what are the stages taken to make a process optimization
Please give me some technical support to...
Hi ChemEngMKH!
Could you tell us What sort of problem with the thermal isolation for the heater and the inside of it?
Thanks for your professional replies
Hi!
I a have hydrocarbon gas mixture whose total pressure is Pt(measured by gage)over 40Barg. Is it correct for computing the partial pressure of components by using this formula: Pi(partial pressure of one component), Yi(molar fraction)
Pi= Yi * Pt
Thanks
Hi Latexman!
Coud you explain more what do you mean by this statement:
The PC starts with very little inerts. The TC has a lot of inerts. Presence of inerts just kills the htc.
What stands for HTC and HTRI, and what do you mean by Presence of inerts just kills the htc.
Good luck
Hi!
the heater is on all the time what changes is its firing rate through controlling fuel gas flow.
So, What about Thermal stress on the concrete of isolation(swinging from hot to cold or vice versa) beacuse in our old plant the working of the heater in intermittant way causes us damages on...
Hi!
the heater is on all the time what changes is its firing rate through controlling fuel gas flow.
So, What about Thermal stress on the concrete of isolation(swinging from hot to cold or vice versa) beacuse in our old plant the working of the heater in intermittant way causes us damages on...
Hi!
We have a LPG plant where regeneration(Heating phase) of Molecular sieve bed of dehydration unit is performed by heated gas in mineral oil Shell-tube heat exchanger. However, a new LPG plant where construction is underway and the regeneration of the Molecular sieve bed is performed by the...
Hi ChemEngMKH!
I thought first about the head (power per volumetric or massic unit), What is the max. of head supported by compressor?
Because the temperature is about 120°C.So, Could the temperature causing thermal damage be the reason of TSHH and not the problem of the head which is...
