TEMA question
TEMA question
(OP)
for baffle tube holes TEMA rcb-4.2 says
"Where the maximum unsupported tube length is 36 inches or less, or for tubes larger in diameter than 1-1/4 inches O.D., standard tube holes are to be 1/32" over the O.D. of the tubes. Where the unsupported tube length exceeds 36 inches for tubes 1-1/4 inches diameter and smaller, standard tube holes are to be 1/64" over the O.D. of the tubes."
seems a little ambigious to me. If i have 3/8" tubes with an unsupported length of 12" i'm assuming that per tema i would over size my holes 1/32" (the first case). am I interpretting this correctly?
thanks
"Where the maximum unsupported tube length is 36 inches or less, or for tubes larger in diameter than 1-1/4 inches O.D., standard tube holes are to be 1/32" over the O.D. of the tubes. Where the unsupported tube length exceeds 36 inches for tubes 1-1/4 inches diameter and smaller, standard tube holes are to be 1/64" over the O.D. of the tubes."
seems a little ambigious to me. If i have 3/8" tubes with an unsupported length of 12" i'm assuming that per tema i would over size my holes 1/32" (the first case). am I interpretting this correctly?
thanks





RE: TEMA question
Yes I agree with you 1/32"
desertfox
RE: TEMA question
Desired shell-side flow characteristics should determine which way you go. As well as RCB-2.32, which can be affected by baffle hole size.
-TJ Orlowski
RE: TEMA question
Your assumption is right. Since your unsupported span is only 12 inch, there is not the need to make the baffle holes tighter to try to mitigate the effects of vibration on long unsupported spans.
Making your support baffle holes only 1/64" over will make your bundle more difficult to tube.
rmw
RE: TEMA question
RE: TEMA question
RE: TEMA question
RE: TEMA question
RE: TEMA question