Recent content by Slay the P.E.

Agreed. That made looking at the steam tables terribly inconvenient.

Hi all, In case you didn't know, NCEES regularly updates their errata but makes no "official" announcement (that I know of). Check your discipline exam errata here: NCEES exam prep errata The Mechanical Engineering TFS and MDM errata were both updated yesterday, 4/4/2022. The HVAC errata was...

Following up on this, Section 4.5.2.1 Internal Combustion Engines has been cleaned up a little and now they provide a helpful definition for the parameter "n".

Here's a preliminary list of things I noticed. Other things might come up upon further review. I was focusing only on Thermal-Fluid Systems: Section 2.15.6 Vibration Isolation—Fixed Base is completely new (this is 100% irrelevant to TFS) Section 10.5.2 Incomplete Combustion has been deleted...

You should get it if your exam date is after April 1, 2022.

Our live course for TFS is starting Saturday 1/8/22. You can sign up for a free trial period for the first two weeks: no credit card info required. More details here Live Course

Ok, I see now. As you have also noted, the table you linked uses the Darcy-Weisbach equation and the table in the reference handbook uses Hazen-Williams. One can find references recommending C=150 for Hazen-Williams in new steel pipe. Using C=150 brings the results a lot closer. It is worth...

@ZDG For 8-inch pipe, (ID=7.981”) with Q=1000 gpm, the Hazen Williams equation with C=100 yields 3 ft head loss for a length of 100 ft, matching the value in the table. From 3.4.2.3, Hazen-Williams for 1 foot length is: h = 10.44 (Q^1.85)/(C^1.85*D^4.87) If you plug in the numbers you’ll see...

What error do you see in this table?

Hi @GTGodzilla If you’re looking for TFS study resources, you may want to consider downloading the free sample pages from our study guide, here. In addition to the study guide, we have a free, full-length TFS practice exam which you can also download from our website. Cheers!

We can help you out in these boards if questions arise . However, we are much more responsive in our private Slack channel, which comes for free when you buy our Practice Problems book. You can download a free preview (more than 80 pages) of the book from our website, here: Free PE Exam problems...

If it’s for the PE exam (the focus of these boards) then a sphere would be a bad idea simply because the correlation for drag on a sphere is not in the reference handbook (I think) Also, we’re getting into “spherical cow in a vacuum” territory: Spherical cow - Wikipedia

If it’s for the PE exam, perhaps you can model it as a flat plate (or two plates) and use the correlations for the drag coefficient. Then from there you can get the drag force.