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Results,muchtothesupriseoftheauthors,provedthatthefan is moreefficient than the BakerBlower for pressures as high as twenty ounces per squareinch.The air was measured by noting the. Buffalo Fan Manual - Inlet Vanes.pdf. Buffalo Fan Manual - Inlet Vanes.pdf.
Hi all, I'm working on a project which will move flue gas from a plant to a processing plant some distance away. In planning for a worst case scenario, we need to move the gas up to 10 km by pipe.
Due to its properties and potential water content, high pressure transport is not an option. Sizing a fan for approx. 75,000 m^3/hr is giving me some trouble given the pressure drop over this distance.What is the maximum delta-P across a fan if in series? I cannot seem to find an easy guide to getting rough estimates.
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I can easily calculate pressure drop across the line using ASPEN Plus and know that several boosters will probably be needed along the way, even if a very large (1.5 m) diameter pipe were used.Thanks for any advice. RE: Duct/fan sizing over long distance.
Hi Goober Dave,Thank you for the reply. To be honest, I am not sure what a typical static pressure limit would be. We have not specified the materials of construction for the pipe, but are considering corrosion resistant stainless steel and possibily even fiber glass options. Ideally, we would have one or more blowers which would be able to work in such a way to mitigate the frictional losses.Here is what I imagine:Inlet (1 atm) - Fan/Blower (2 atm output)- Pipe Length X (1 atm outlet due to frictional losses) -Fan/Blower (re-up to 2 atm)- and continue until the end of the process.As a new chemical engineer, I am just not sure where to begin.Thanks again, I appreciate it!
RE: Duct/fan sizing over long distance. 10 kM of 1.5 M diameter stainless pipe!Please post who you are giving the order to before you actually award it so that we can all buy stock.Where to start?Either start by picking a pipe size, work out the pressure drop and select fans accordingly.Or, select fans and then design a pipe size to match the available pressure.You should really do a life-cycle calculation - but pumping costs are going to be huge - so the lower pressure drop (bigger pipe) the better in the long run. RE: Duct/fan sizing over long distance (Chemical).
BJS,In that pressure range, we call 'em blowers or compressors instead of fans, even though they may just look like huge fans. I have worked with some waste treatment plant aeration blowers that were designed for 300,000 m^3/h at 0.5 atm - so roughly twice the motive power of your hypothetical 75,000 m^3/h at 1.0 atm. Each machine delivered about 2800 KW at the shaft and had a 5000 KW electric motor.
That's the order of magnitude of the energy need you're looking at.Like MintJulep said, this is worth doing cost-optimization analysis. Don't worry at first about having to put blowers in series, that's a detail for later. I wish I could give you a quick method to follow, but I've never gone beyond a few hundred meters with my work.I would advise finding a consultant with some experience in tunnel ventilation or something?Let's see if anyone else pitches in, though - this forum has really amazed me with its breadth of experience.Good on y'all,Goober DaveRE: Duct/fan sizing over long distance (Chemical). I am now considering a multistage centrifugal blower. I found this one from HSI as an example (PDF - ).
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At my flow rate (50000 m^3/hour), it discharges 24 psig. I know this is an enormous blower and probably very expensive. I will have to get in touch for a quote.
But in other regards, what are the typical concerns in running this type of blower? How much moisture can safely remain in the flue gas?
With a fan, I was not concerned. With a compressor, I would be very concerned. I am not sure what to think with this system.Thanks again- invaluable help has been given so far. RE: Duct/fan sizing over long distance. My guess for moving flue gas (probably it is at high temperature) for such a long distance with duct is not a good idea.You had better discuss this with a process engineer first. On the way the temperature will drop down and corrosion will be a big problem, the duct material will be very expensive. Of course the type of flue atmosphere is an issue here, you have already mentioned the water content.Therefore, from my experience the distance should be a short as possible to treat/process the gas.
If it is definit to deliver the flue gas to that distance you may need to provide a couple separator/filter stations in between to eliminate the water content.In case the elevated temperature of the flue gas you need to reduce the temperature to an acceptable level before entering the compressors. Additionally, compressor manufacturers will ask you to filter the gas before accepting into the compressors for the life expectancy of the compressors.Regards,Ibrahim Demir RE: Duct/fan sizing over long distance (Mechanical) 24 Mar 09 09:42. You should first find a manufacturer that will fabricate a fan/compressor that will work in an atmosphere with sulfuric/nitric acids and lots of moisture.There are fan manufacturers (Buffalo Forge and etc) that will produce custom pressure/flow fans to suit you.You should also familiarize yourself with fan control as starting fans in series can be tricky.There are consultants who do nothing but large ventilation projects and you may do better hiring one for this project. RE: Duct/fan sizing over long distance (Mechanical) 25 Mar 09 21:34. This is a more complex problem than it appears. The issue of suitable fan(s) is not the major problem as other respondents have stated fan suppliers will provide a suitable machine to suit the specific requirements but fan suppliers do not design systems like this - it is a specialist business.
The effects of compressibility and leakage along the length are the main reason for the complexity and it is likely that several fans would be needed at intervals along the duct. It is a common issue in the ventilation of long tunnels during construction but is further complicated by the flue gas. At another level gas pipelines have similar issues but operate at much higher pressures. Good luck.Fred.
Engineering book published by the company in 1914, edited by.In 1902, an engineer at Buffalo Forge, submitted drawings for what became recognized as the world's first modern system. In 1915, he left the company to form. Cccam script install fonts download. Other products Heating equipment, dust collectors, and a range of metal cutting and forming equipment were also manufactured by the company. In addition to being one of the largest employers in the city of Buffalo (during its heyday), Buffalo Forge operated several other plants in the,.
The Wendt family retained ownership of the company until 1941, when the ownership was broadened by a public stock offering. Buffalo Forge was one of the 'big three' that made blacksmith equipment in the United States. Champion and Canedy-Otto companies were the other domestic competition. Buffalo Forge Company (Advertisement) for a mill exhauster (March, 1919) Mergers, acquisitions & significant events 1900Buffalo Forge was incorporated with a capitalization of $500,000.1902Geo. Squier Manufacturing Company of Buffalo was purchased, opening the company up to a South and Central America market.1941It was decided that the company would be best served if the stock was offered on the. A reorganization was made at that time so that The Squier Corporation, Buffalo Pumps, Inc., and the Canadian Companies became wholly owned subsidiaries of Buffalo Forge Company.1993Buffalo Forge was acquired by the Howden Group.1997of was created from the machine tool division of Buffalo Forge.1999The Howden subsidiary containing the remainder of Buffalo Forge was renamed.2006The company's 14-acre original manufacturing plant located at 490 Broadway St. In Buffalo was razed.
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This included the six story 'Building 3' at 470-474 Broadway St. Which was the final building to be destroyed.2010The Howden subsidiary containing the remainder of Buffalo Forge was renamed.2010The Buffalo Machine Tools subsidiary containing the machine tool division of Buffalo Forge was renamed to ofWikimedia Commons has media related to.References.
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