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...
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...
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...
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...
Dear all
I sized a pressure relief valve for an Heat Exchanger and for tube rupture case.
The problem is that I considered 3 tubes to be ruptured and as result I oversized the relief. I have 2 questions:
1) Is forbidden from API to consider 3 tubes ruptured and you have to consider only one ...
Dear all
I sized a pressure relief valve for an Heat Exchanger and for tube rupture case.
The problem is that I considered 3 tubes to be ruptured and as result I oversized the relief. I have 2 questions:
1) Is forbidden from API to consider 3 tubes ruptured and you have to consider only one ...
I am looking for a suitable way of sealing channel to shell joint at a BEU vertical heat exchanger.
I have thought to use two ASME B16.5 flanges, for shell and channel, in combination with a typical spiral wound gasket of the same class.
As a result no o-ring or planiflex gasket will be used, as...
Has anyone observe that when insert a flange to the PVElite and at the point where you must fill "finished thickness" that the program uses this input once for calculating flange strength acc. App 2 ( as it was the thickness of the flange) and at the other for suggest that PWHT should be done or...
Hi all
I am interested for the following clarifications
1) According TEMA-R only tubes expanded in tubesheet and back fillet welded are acceptable method or tubes welded with sealing (fillet) weld and groove weld (full strength) (acc. ASME VII UW without being expanded) are also acceptable...
At a beu heat exchanger the tubesheet is fixed and gasketed on both sides by channel flange and the shell flange.
In case o-ring gasket is used (m=y=0) there is a contact surface between channel flange and tubesheet and the same valids for shell flange and tubesheet.
However the contact...
I have sized a natural gas vent cold stack acc. API 521 considering stack tip velocity >150m/s, so as no flammable mixture to be created.
Acc. API 521,even so, the height of the stack shall be sized in the case of flammable mixture occurs.
But,by taking the above case into consideration, the...
We are in the final stage of the construction of a natural gas slug catcher. We are looking a way for removing the water after hydrostatic test pressure. The catcher has only two nozzles, one for drainage and one for level measurement (4"). Both nozzles are installed appr. 3m high from the...
Hi everybody
I try to find a suitable correlation for the heat transfer coefficient of the shell side in the subcooling region of a shell & tube steam condenser.
I have found a equation from free convection which is the following:
Nu=0.138Gr^0.36(Pr^0.175-0.55)
(Perry's paragraph 5.13...
