I'm a young engineer who's been thrown into the shell and tube heat exchanger world. I work for a small fabricator designing simple HX's. I'm trying to design a tubebundle to heat water in a large tank.
I've been given Kern's Process Heat Transfer book as a great reference but i don't posess a...
i'm also young and new at this stuff, but my experience would be that if the hole is the right size for expansion then who cares if it's reamed. TEMA wants everything double grooved anyway and if these tubes are roller expanded the reamed finish is unnessecary. we ream our holes because the...
thanks for the respones.
i do have a hard time trying to get them to understand why its needed but after a while they seem to agree. it comes in more handy in preventing problems and avoiding disasters.
the real trick is trying to get the shop guys to understand the importance of material...
I'm working for a small manufacturing company and have inherited a close to useless inspection traveler. Are there any good resources present on the web for creating one? Any one have any good suggestions? I'm looking at this from a QC perspective and want to make it as simple as possible for...
wow, never thought i'd start this much of a debate. I think its just a little dissapointing to me as a new engineer that a lot of this stuff hasn't been taken care of. i know most engineers aren't english majors (myself included) but people have been using this stuff for years and its just...
i'd love to, if i decide to stay in this industry. i've asked my inspector multiple times what it would take to get on these boards or have some kind of say on these things. When i have a problem with something that thouands of people use every day i'd like to fix it.
GatorOne,
sorry but its been my experience so for that most of these codes are written by lawyers. It would seem as though an engineer did the actually technical writing because so much of it is detailed and just plain "jargon". There are also enough loop holes in the whole thing...
abeltio,
thanks, you hit it right on the button. that my situation exactly. we weld nozzles to the plates and in this case its nessecary to weld the plate on the outside since the customer wants 2" 3000# cplg's attached for the inlet/outlet of a 2 passs HX.
ooh i like that quote.
carletes,
i find myself in this same situation and the company i work for uses the same guidelines that jproj lays out. i design everything with a 1/16 corosion allowance but most of what i do is steam, water and oil.
Hello,
I'm a young engineer who’s recently been thrown into a heat exchanger design job. When designing flat covers to be welded to standard slip-on flanges I’ve come across an odd problem. The ASME code dictates that the weld thickness should be at least 1.25 times tmin but it does not...
To all,
In my own limited experience it seems that the biggest problem with putting nozzles in the knuckle radius is that its harder to weld and causes the head to warp. It takes the welders longer to prep the joint and nozzle and increases the heat effected area.
To MJCronin...
