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Thanks Montemayor, The project will be in the Canadian oil sands and we're looking for 10,000 PPH (or 10 MM BTU/hr) steam generation. Local supply is preferred, but we're sourcing equipment out of Asia for other parts of the project, so that's not a terribly big issue. Are there any process...

I'm working on a project that is looking to use TEG as a heating medium to produce <50 psig steam from indirect heating of boiler feed water in a "package" type boiler (initial thoughts are tube-in-shell units). I've found plenty of information about glycol reboilers used in the gas dehydration...

I estimated it using beam stresses under displacment and just used the tube's moment of inertia in the equations. The formulas I used I found in "Mechanics of Materials, 2nd Edition" by Roy R. Craig, Jr. Now, this may not be a correct way of doing this, but this is the only way I could...

WCL, Thanks for the insight. I have a means of estimating the natural frequency and the forcing frequencies within the exchangers (Chenowyth's work in the Heat Exchanger Design Handbook). The transfer function is not something that I know at the moment, and is something I should look into...

I believe I'm using the homogenous flow method. Neither reference to the Bell-Delaware method (Heat Exchanger Design Handbook & Wolverine Tube Heat Transfer Data Book) mention anything about 2 phase flow. Only some assumptions about vapor. Is there another source out there that will take into...

As a quick update, you guys were absolutely correct. I used Bell-Delaware Method for pressure drop of a shell side with vapor at vacuum conditions, and it came up with 22 psi pressure drop, which is absolutely impossible since in the field the vessel ran fine for many years with an unoticeable...

The tubes will be fixed at each end to the tubesheets, however, the tubes are simply supported by baffles in between the tubesheets. The baffle spacing and number varies from design to design, so it looks like I need to do a little more in depth research into mode shapes for various...

Thanks for the input. Is there a cutoff for which modes (i.e. 1st, 2nd, 3rd mode/harmonic) will produce noticeable stresses within the tubes, or is it simply a function of the geometry? For future evaluations, I would like to be able to safely judge whether a forcing frequency will cause...

I'm relatively inept at vibration analysis and frequency response, but I'm trying to predict vibration problems with tube and shell heat exchanger designs. I've followed J.M Chenoweth's guidelines in the Heat Exchanger Design Handbook and have come up with all the forcing frequencies (turbulent...

There's a longitudinal baffle in the shell side that splits condensing tubes approximately 75% on one side and 25% on the other side. These make up the two passes. Vapor enters the larger of the two passes and after initial condensing, the remaining vapors into the smaller of the two passes...

The purpose for the calculation is that there seems to be a 5" Hg pressure drop across the second shell side pass as measured at the current flow rates. The customer believes this to be a design issue (as a competitor convinced him it was), although the unit ran for 10 years at design pressure...

I've been charged with finding the pressure drop across a two pass shell side TEMA F heat exchanger with process vapor as the shell side fluid. Each pass is individually baffled with double segmental baffles. I've been trying to use Kern's equations for the pressure drop calculations but I...