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  1. Slay the P.E.

    Free TFS Video Tutorials

    We have now uploaded tutorial videos for Otto & Diesel Cycles and for Ideal Gas Mixtures @MikeGlass1969 https://www.slaythepe.com/coaching-plan-members.html
  2. Slay the P.E.

    Refrigerant enthalpy diagrams

    Well, yes ASHRAE fundamentals is good but people now should consider using only the electronic handbook provided by NCEES for studying, because that is what you're going to have to use on test day.
  3. Slay the P.E.

    Free TFS Video Tutorials

    Thanks Mike, It has been a while, but just recently we're picking up the pace again. We have two scripts ready for the voice actress so we'll be uploading those in about a couple of weeks.
  4. Slay the P.E.

    Happy New Year!

  5. Slay the P.E.

    Version 1.2 of NCEES Mech. Handbook is out now -- what's new?

    We asked them about what changed and this is all we got:  We do not publish errata for PE handbooks. Major revisions are indicated by a change in the first number; a small number of technical and editorial changes are indicated by a change in the second number; and a small number of minor...
  6. Slay the P.E.

    Version 1.2 of NCEES Mech. Handbook is out now -- what's new?

    Section 3.8.8 Open Channel Flow is brand new. It only has one equation: the definition of the Froude number and no equations useful to make open channel flow calculations. 
  7. Slay the P.E.

    Version 1.2 of NCEES Mech. Handbook is out now -- what's new?

    This post is regarding new material only. We haven't checked if they fixed the typos that have been reported.  If you find anything else, please add to this thread. Section 2.16.5.6 Helical Gears is completely new. The old section 2.16.5.6 Planetary Gears is now 2.16.5.7 Section 9.1.7 "Heat...
  8. Slay the P.E.

    How I Passed the Thermal / Fluid PE exam

    Congratulations!!!
  9. Slay the P.E.

    Free TFS Video Tutorials

    We've added a two-part series on refrigeration, covering:  Ideal Vapor Compression Cycle,. Multi-Stage Vapor Compression and the Ideal Gas Refrigeration Cycles.  Access them for free here: https://www.slaythepe.com/coaching-plan-members.html
  10. Slay the P.E.

    NECEES Mechanical PE Reference Manual Released

    This was already clarified in this previous post: http://engineerboards.com/topic/33324-necees-mechanical-pe-reference-manual-released/?do=findComment&comment=7618245
  11. Slay the P.E.

    Fundamental flaw... can you spot it?

    In the “technical data”...
  12. Slay the P.E.

    CBT - Mech Reference Errors

    OK, thanks.
  13. Slay the P.E.

    Free TFS Video Tutorials

    We have now uploaded video tutorials for the Carnot Cycle, the Brayton Cycle, and the Combined Gas-Vapor Power Cycles. Access them for free here: https://www.slaythepe.com/coaching-plan-members.html
  14. Slay the P.E.

    CBT - Mech Reference Errors

    Good catch. It appears that of the highlighted values, only the one for 64F is incorrect (it should be 0.3 psia). Did you report this to them?
  15. Slay the P.E.

    Free TFS Video Tutorials

    Update: We just uploaded a 3-part series on Entropy, Entropy Balances, Isentropic Processes and Isentropic Efficiency, as well as a tutorial on the Mollier and P-h Diagrams. https://www.slaythepe.com/coaching-plan-members.html
  16. Slay the P.E.

    When is Steam not an Ideal gas?

    No. Just never use ideal gas assumptions for steam. It’s safer that way. Use tables or a Mollier diagram.   For this particular problem: If you start at 3 psia and compress, there is some liquid present at the “inlet” therefore that liquid-vapor mixture is far from being an ideal gas. So...
  17. Slay the P.E.

    When is Steam not an Ideal gas?

    1. With the inlet conditions, find the enthalpy at the inlet, h1, and entropy at the inlet, s1 2. The entropy at the discharge for the isentropic process (s2s) is the same as s1, so for the isentropic process you have s2s and pressure. 3. Is s2s < sg at 3 psia? If yes, you have a saturated...
  18. Slay the P.E.

    When is Steam not an Ideal gas?

    Dense gases such as steam in power plants and refrigerants in refrigeration cycles in general cannot be modeled as ideal gases. Only when the pressure is VERY low can steam be treated as an ideal gas (this is done in psychrometrics, where the partial pressure of water vapor is in the order of...
  19. Slay the P.E.

    Free TFS Video Tutorials

    Really hard to say. Maybe the end of this fall.
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