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Thanks a lot guys, Quick question for Stainless, can you give a short example for the cash flow? I have tried to understand the way I should apply NPV for my case. Is it like: calculate U Calculate heat duty required with a reduced U due to fouling Calculate cost for that trim duty now this...

Hello, I found an article that deal on cleaning schedule optimization for HX's. They use a EUAW technique, but only the results are shown and not how they obtain the results using this EUAW. Any idea on how to use EUAW? I never heard of it and the books an resources I have looked into dont say...

Hello Group, I am trying to set up a spread sheet to help us schedule cleaning of our HX's. I found an article on the CEP magazine in which a technique using EUAW (equal Uniform Annual Worth) is used. After Google for 2 days I haven't been able to find how to do this. The article describes...

Hello Group, I am trying to set up a spread sheet to help us schedule cleaning of our HX's. I found an article on the CEP magazine in which a technique using EUAW (equal Uniform Annual Worth) is used. After Google for 2 days I haven't been able to find how to do this. The article describes...

Hello group I am currently designing spreadsheets applications for unit operations, I have ready a multiple evaporator, packed adsorption colum sheets, but now I am working on a packed bed dryer. I have set up cells to calculate mass transfer coefficient, difussion coeficients, and humidity...

Hello group I am currently designing spreadsheets applications for unit operations, I have ready a multiple evaporator, packed adsorption colum sheets, but now I am working on a packed bed dryer. I have set up cells to calculate mass transfer coefficient, difussion coeficients, and humidity...

Hello, I am trying to set up an Excel application for a 3 stage evaporator, my problem is I have no clue how to create macros, and the how to set up the different level of iterations, any pointer on how to set this up? The book I have by Boonin first edition, is for an old windows version and...

Hello, I am trying to set up an Excel application for a 3 stage evaporator, my problem is I have no clue how to create macros, any pointer on where to look for a book or web site that teaches how to create macros? The book I have by Boonin first edition, is for an old windows version and I...

Hello everyone I was wondering if there is someone who could tell me of an article or book with an example describing the Rosen Method for adsortion breakthrough curves. the articles and books I have found so far (Adsorption Egineering by Suzuki; Gas Separation, Yang; Adsorption calculations...

hi check Lyons Handbook Cheers Bill

hi This is along answer so u should check the following books Valves by Richard W. Greene Lyons Handbook Cheers Bill

Hi I am not quiet sure of your design, but from my experience you have to intall the relief valve as close as the equipment you want to protect, otherwise the opening pressure of the relief valve will be over the desire value (my guess is that you want to protect your pump for low flow...

Hi everyone, from Consolidated's catalog, section Thermal Expansion/API fire sizing. GPM = BH / (500*GC) where GPM=Flow rate, in US gallons per minute at the flowing temperature B=Cubical expansion coefficient per degree F for the liquid at the expected temperature differential. water...

Hi Dopa, I'm not quite sure if this might help, but here it goes. You can review the book, Analysis of water surge by John Pickford, it has a quite nice and easier way to explain this phenomena (easier than Streeter, at least for me). Hope this will help

Hi, I used to work sizing PSV and silencers for different applications. This info can give and idea of what to expect, first of all as our colleges have said, you must count for the back presure that your vent piping system has, if this back pressure is too high a bellow type valve should be...