First to make a correction on my previus thread.
Tubesheet material is SA-350LF2, not SA-105.
Although ASME and TEMA-as TEMA material requirements arise form ASME- does not prevent A105 for using as a tubesheet material, paragraph UCS-66 requirements does many time forbidden for this material...
For the mechanical calculation we use PVElite, and you can also use COMPRESS.
According to my opinion it is better to purchase different program for mechanical and thermal calculation.
For thermal calculation HTRI is very suitable and is has interface with PVElite 2010.
But if you are not have...
MrBTU,
As per AA the case is Fig AA-1.1(d),U tube type gasketed both sides, tubesheet not extension.
Tubesheet material is A105, tubes material is A179.Heat exchanger size is 20" .shell design pressure 5barg, tempe/re 200 C, tube design pressure/tempe/re 30/150 C. tubesheet thick. 86mm.
My...
Hi everybody,
Facing the problem of what method should you follow for having the required tube to tubesheet joint the following codes are applicable.
1) ASME VIII Div 1,UW-20 gives the required weld lenght for four acceptable weld types-fillet,grooved or combination welds - full strength or...
MJCr...
HEX cannot have been used because we have not start to manufacture it yet.
Its vertical because of the available space.
Such a comment like"HMMMmmmmmmmmmmmmmmmmm" are not valid to this forum and for professionals engineers.
We have manufacture and install more than 10 of vertical...
Dear Compositepro
Controlling load with steam control valve product A*U (area*heat transfer coeff.) remains appr. constant. Then Q is directly proportional to gas outlet temperature from Q=AUMTD
But controlling load with level then A*U changes since A changes and then I think you cannot control...
Dear all,
I have to control the outlet temperature of natural gas process fluid, which flows in the tube side of a vertical beu HEX.
At the shell side steam is condensates. By modulate steam mass flow with a throttling control valve you can control natural gas temperature. Classic temperature...
With larger tubes I mean longer. In vertical condensation lenght is plays role in heat transfer coef. of shell side. Finally you will have and larger area. Safety margin acc. me is not only to ensure that with fouling you will have 100% duty covered but because heat transfer equations used for...
I have design a vertical beu heat exchanger. Steam is condensates at the outlet tubes area. Please let me know if I have right for the below:
1)At maximum load condensations will take place in a area A in the condenser tubes, normally a little bit smaller than the total tubes area Atot. It...
Due to the fact that HEX is beu,vertical type I cannot think of any pot to be added to it.I think pumps will be suitable for create pressure grandient
Another thing I am afraid is that as natural gas is transmitted to the sub cooling region and for the second tube pass ( as it pass from...
I am going to provide to the plant only the HEX skid for heating natural gas.
As I have informed no pumps will be installed between HEX condensate outlet and flash tank (maybe it should be).
Client consultancy firm wants the condensate flow to be done by the pressure condensate has at HEX...
No pump is installed dns HEX so no reason for subcooling. In fact dns HEX there is a flash tank
I am asking if with one control valve upstream HEX you will have or not level. I think that you will have not because the mass of steam entering HEX will be the same with the condenser leaving the...
Dear all
I have proposed the installation of a vertical BEU HEX were in tube side flows natural gas and in shell side steam is condensates.
Natural gas outlet temperature is measured with a temperature transmitter which gives the order to a steam control valve opening, adjusting thus steam...
As far as the kind of rupture acc. spec. is a tube rupture and not tubesheet rupture. So I think that I shall use the no linear equation for rc considering as L the half of the tube length. Then I must multiply by 2 the flow since gas flows at both sides of rupture (up and down) acc. API 520...
Dear gr2vessel
The valve is a spring loaded safety valve. The HEX is a BEU steam condenser and in the tubes flows natural gas.
I fix the problem by ordered a new valves sized for one tube rupture, because I was afraid for chattering problem if I used the big valves. So we are ok
One issue is...
