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  1. Dr. Barber

    April 2019 15k SPAM Thread

    Even my atheist *** is sad about the ND fire. I saw it in 2005 and it’s beauty and majesty could not be denied.
  2. Dr. Barber

    April 2019 15k SPAM Thread

    Last-minute tax prep spam
  3. Dr. Barber

    April 2019 15k SPAM Thread

    Spammity Spam
  4. Dr. Barber

    April 2019 15k SPAM Thread

    Hail Nimrod. Praise Bojangles.
  5. Dr. Barber

    April 2019 15k SPAM Thread

    Spamley Cup Spam
  6. Dr. Barber

    Linked Words Game

    Ball bearing 
  7. Dr. Barber

    April 2019 15k SPAM Thread

    Dock hag spam 
  8. Dr. Barber

    April 2019 15k SPAM Thread

    Peppermint Larry is not happy with the spam rate. Doubtful we’ll get to  6k.
  9. Dr. Barber

    April 2019 15k SPAM Thread

    Indeed.
  10. Dr. Barber

    April 2019 15k SPAM Thread

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  11. Dr. Barber

    April 2019 15k SPAM Thread

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  12. Dr. Barber

    April 2019 15k SPAM Thread

    S P A M
  13. Dr. Barber

    April 2019 15k SPAM Thread

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  14. Dr. Barber

    April 2019 15k SPAM Thread

    Lord Hotcakes wishes to spam
  15. Dr. Barber

    NECEES Mechanical PE Reference Manual Released

    I have reviewed this and although the expressions I highlighted here in purple appear to be different, it turns out they really aren't. Takes some algebra, but it can be shown that they're the same. So, I'm taking this back. Looks like they got this one right.
  16. Dr. Barber

    NECEES Mechanical PE Reference Manual Released

    Train wreck city, baby. Thermal efficiency of the Otto cycle is wrong: Compare to Thermo textbook by Cengel and Boles (shown here) or equation 28.42 of MERM13
  17. Dr. Barber

    NECEES Mechanical PE Reference Manual Released

    The clusterfudge continues... COP for dual-stage vapor compression refrigeration cycle is wrong. The mass flow rate through the low pressure circuit in a dual-stage system is never the same as that of the high pressure circuit. See example 4 in ASHRAE Fundamentals, Section 2.5 "MULTISTAGE VAPOR...
  18. Dr. Barber

    NECEES Mechanical PE Reference Manual Released

    I've been sending them the errata I"ve been posting here.
  19. Dr. Barber

    NECEES Mechanical PE Reference Manual Released

    COP for the gas refrigeration cycle (page 265) is wrong. Here is the correct definition from the Thermodynamics textbook by Cengel and Boles (also, see equation 33.17 in MERM13)
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