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I felt the same about the AM portion, PM portion a little more rough for sure. I left confident-ish....now doubt is sinking in.

I am already to that point! Second time taker (TFS Exam) and I focused on doing as many problems as possible, some of which I did multiple times, and really understanding processes and what is going on. Looking back on my first go, I really didn't do as many problems as I should have to where...

Water at 40C at 1MPa is in the subcooled region, so there isn't any significant change in enthalpy with pressure increase at a certain temperature in the subcooled region. Looking at a P-h diagram will help give you a visual. 

Because 40C is below the Tsat for the given pressure (1 MPa = 10 bars, Tsat = 179.9C).

Thanks @squaretaper PE! Yes!! Mollier is much faster route. 

I have only worked with and have met mechanical PE's that took the TFS exam, and the consensus is that everyone they know that took the exam had to take it multiply times. Same, never met an HVAC exam taker.  This is my second go at the TFS exam, I was pretty close the first time (60%) but the...

The way I solved it: Qrad=(emissivity)(Stefan-Boltz Constant)(Area)(delta T^4), once you have Q then Q=(m-dot)(hfg). Solve for m-dot.

Is there not many TFS exam takers this round?

I am getting (D) 0.4 lbm/hr.

Lol! Yea I know what you mean. Just a few more weeks, then hopefully this is all over!

Look at your denominator for you losses for each branch (62.4 ft/s^2).

I got answer D (98 ft).

I have been using the unit conversions book by Lindeburg while studying. It has been very useful while working problems and a time saver. 

I recommend using the psych chart from Coolerado and print it in 11x17. It is really helpful and easy to read, plus it's free.