HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
(OP)
Dear all,
I am designing a shell and tube heat exchanger with the following process characteristics:
-Tube Side: Gas Refrigerant
-Shell Side: Fresh Water
I get a constraint from general installation of my project to put "axial inlet nozzle" on tube side and I have a warning on HTRI software which is a copy/paste from TEMA:
"Consideration shall be give to the need for special devices to prevent erosion of the tube ends under the Following conditions:
- Use of axial inlet nozzle
- Liquid pv2 in excess of 6000 (8928)…."
Regarding the pv2 criteria, I am very far from this limit however I do get an axial inlet nozzle.
My question is quite simple, I don't get the requirement, which special device am I supposed to provide due to the fact I use axial inlet nozzle, if any ? Or is it just generic warning message?
Thanks in advance, I did not find any similar topic on internet.
I am designing a shell and tube heat exchanger with the following process characteristics:
-Tube Side: Gas Refrigerant
-Shell Side: Fresh Water
I get a constraint from general installation of my project to put "axial inlet nozzle" on tube side and I have a warning on HTRI software which is a copy/paste from TEMA:
"Consideration shall be give to the need for special devices to prevent erosion of the tube ends under the Following conditions:
- Use of axial inlet nozzle
- Liquid pv2 in excess of 6000 (8928)…."
Regarding the pv2 criteria, I am very far from this limit however I do get an axial inlet nozzle.
My question is quite simple, I don't get the requirement, which special device am I supposed to provide due to the fact I use axial inlet nozzle, if any ? Or is it just generic warning message?
Thanks in advance, I did not find any similar topic on internet.
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
With an axial inlet it is likely that you will have very poor flow distribution unless you take some measures to 'spread it out'.
I have seen small HX like this where we plugged the outer two rows of tubes (25%) and the performance didn't change at all.
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P.E. Metallurgy, consulting work welcomed
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
-Christine
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles
https://www.standard.no/pagefiles/1130/p-001r3.pdf
RE: HTRI/TEMA requirement for shell & tube design with tube inlet axial nozzles