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I took the PE Mechanical HVAC exam on 2/14 and received notice that I passed on 2/23 at 8 AM CST. I talked with a few coworkers about my general experience and thought I would post it hear as well while it is still semi-fresh. PREPERATIONS I took an online refresher course through School of PE...

Thank you. The MERM equation is correct I was just looking for verification. As I’ve outlined, the NCEES answer gives a different answer which I believe is incorrect. As for your last point, this is not a heat exchanger problem. I’ve given all the information needed to solve the problem. The...

No, it does not make sense. We do know what the airflow is. The airflow is 700 cfm of OA. The SA is 3,600 cfm as stated. The assumption that the supply flow doesn't remain the same is irrelevant (we could have a constant volume system that always provides 3,600 cfm air). In my original post, I...

Perhaps my wording wasn’t the best. Basically what I’m asking is, how do you calculate the OA load? I believe the load is based on the enthalpy difference of OA and RA (q_t_OA = 4.5 x Q_s_OA x (h_OA - h_RA)). The NCEES solutions manual, which I believe is incorrect, says the load is based on the...

I have been going through the official NCEES practice exam for HVAC. I understand the main concepts and am combing through each problem to make sure I fully understand each step. I am stumped on one portion of the following problem though: A room in a building has the following characteristics...