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Looking at cold weather psychrometric charts, it appears that air at around -23F or so has enthalpy of less than zero. How is this possible? http://www.homepower.com/sites/default/files/uploads/Psychrometric_Chart.jpg

I called the NY board today as the "next steps" link from NCEES just links to the info page about registering for the Spring exam. The lady on the phone said they don't even have the results yet and it will take at least 3 weeks. Does anyone know what happens next in terms of the registration...

I wanted to see if anyone who has taken the PE exam if they had any input on using incorrect answers to find the correct answer based on them being distractors based on common mistakes. For example, in 6MS book, on flow rate problems that require a conversion from minutes to hours or seconds...

Maybe I'm missing something but I have a disagreement with 2 of the ventilation rate questions in the HVAC 6 Minute Solutions Book. Question 66 refers to a "research facility", so I thought the appropriate thing to do would be to use the ventilation rates for a lab (10 cfm/person + .18...

I am currently waiting for my state board to approve my PE application. They have already approved me to take the FE. My plan as of now is to take both on the same weekend in April (PE on 4/11, FE on 4/12) so that I only have to study once. My problem is that I really don't know where to begin...