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  1. DanTheMan

    proper pump alignment procedure

    I have worked with a laser alignment system which tells you where to place shims to align the motor shaft with the power end. I have seen a person use a dial gage also. The general procedure is to place the equipment on the shaft so that it is vertical up. Then rotate the equipment 90 degrees in...
  2. DanTheMan

    Electric heat

    Well, just look at it this way; the power company that provides the electricity has to burn a fuel to make electricity at less than 100% efficiency. So the direct method is the most efficient because the power company has to do very similar things to generate the electricity as you do with fans...
  3. DanTheMan

    Air compressor optimization

    load/unload operation is always less expensive to run than part load, or "modulating" service. The motors run at near full load even when you back off the ammount of air that you push with the compressor. Most of the time all that hapens in a modulating situation is that the inlet will...
  4. DanTheMan

    Backing Rings

    Typically Backing rings are less expensive than buying a 150# slip on flange for stainless steel pipe. We use stub ends and 150# backing rings on our piping, but we do not have any situations where we have high pressures going through the stainless steel lines. For carbon lines we just use weld...
  5. DanTheMan

    Chemical compatiblilty

    I am creating a piping specification for concentrated sulfuric acid. We have Kynar for indoor applications, but for outdoor applications we intend to use Alloy 20 (Carpenter 20). From my research I have seen chemical compatibility tables that say that it is ok, questionalbe, and not acceptable...
  6. DanTheMan

    I need inforamtion on a useful heat pump

    Thanks, I must not have been as specific as I should have when I searched because I didn't come up with many useful links. I was looking for more in depth data if I could get it. I am familliar with the cycle, just not all of the particulars and pitfalls. Dan The Man
  7. DanTheMan

    I need inforamtion on a useful heat pump

    I am looking for information on heat pumps. I have an industrial aplication where a heat pump could save us a lot of steam and cooling load by moving heat from one place to another. We were looking at ammonia-water absorption heat pump systems so we could use a pump instead of a compressor. So...
  8. DanTheMan

    Material Selection?

    Oops, that should be NACE at www.nace.org
  9. DanTheMan

    Material Selection?

    I took a course in college on corrosion, and it is a complex subject. Metals can react differently to acidic or basic solutions based on pH. Likely the aluminum is forming Al2O3 in the persence of HNO3 when it encounters a scratch, but that is not the issue. Aluminum corrodes in the presence of...
  10. DanTheMan

    ethanol engine

    To my adimttedly limited knowledge, if you completely replace your gasoline with ethanol the only bad things that happen have to do with the air/fuel mixture. Most all cars are designed to run on gasoline and the computers or whatnot are set up for that. The performance will decline unless you...

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