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  1. jimkden

    Waste Heat Recovery

    The reason you don't find this equipment is because the internal combustion engine efficiency is too great and the invested cost plus annual maintenance of the recovery equipment and systems does not have a great enough rate of return. So, equipment manufacturers concentrate on the lower...
  2. jimkden

    Extending Service Intervals

    to patprimmer: You are mixing marketing methodology with this thechnical forum. Do you know what a pirmad scheme is? If you were in busines, you could obtain a business account just like with any other company. A small company with limited cash for advertising uses different methods to get the...
  3. jimkden

    Orifice plate sizing

    I concur with TD2K on .70 inches, by separate means of calculation for a permant head loss of 125 psi @100gpm in a 6 in nom size pipe. Can't comment on whether it is allowed to have orifices in fire mains, leave that to a NFPA guy. Orifices can be made thicker, but that isn't the question posted.
  4. jimkden

    Extending Service Intervals

    To carbulcle, You must have seen a very limited circumstance. But if you surveyed say 10 or more installations of the use of Amsoil, the data shows otherwise, along with 3rd party oil analysis results.
  5. jimkden

    Oil Paper

    It is also my understanding that SAE 40 and higher grades of engine oils are exempt from EPA limitations on ZDDP content. This comment should be confirmed before adopting.
  6. jimkden

    Ideal radius for a bellmouth inlet

    It's time for a little 200 series fluid mechanics. If you have 28"w.g. to pull the flow, you won't make it because the fluid when set in motion required energy to do it (fluid is at rest initially because you want a bell mouth inlet). Mean velocity is approx 41,300 fpm and the velocity...
  7. jimkden

    Extending Service Intervals

    Extending service life oil is an environmental improvement all around from source to disposal.
  8. jimkden

    True synthetics

    Does Aerospace Lubes have API grades on the label, indicating the lubes have been subjected to and passed the API certification tests?
  9. jimkden

    True synthetics

    Best value for the money - buy the one that warrants what they say for life expectancy and figure the cost per mile (or thousand miles). There is only one that warrants what they say, it's not the cheapest to buy but is cheapest per mile.
  10. jimkden

    Extending Service Intervals

    I'd like to modify slightly what Sprintcar has to say about synthetics. Not all synthetics are the same and maybe that he is referring to is a light base stock with VI added. One that does not and will not shear back (or loose viscocity on hard use) is Amsoil 20W-50 Motorcycle oil or their old...
  11. jimkden

    True synthetics

    evelrod is mistaken and probably is referring to another base stock that is not around anymore for just that reason. The name of it slips my mind and without referring to my file literature, I won't guess, but PAOs form the majority of synthetic base stocks out there and are full miscible with...

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