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Thank you very much. I actually took the Civil structural exam back in 2012 and my civil licence was awarded in December of that year. I am going after the Mechanical one now so i can stamp HVAC systems for the buildings i do structural work on. 

nice,do you remember how complicated the heat transfer and powercycle questions were? I plan to take the HVAC exam. 

Thank You so much! Are there any other ASHRAE standards we should bring in? I have got the 4 volumn hand book already.

Does any one have PDF copies of these standards? Thanks

I am taking the HVAC depth, so you think the enthalpy charts in MERM will be sufficent for refrigerant problems? 

The enthalpy diagrams for refrigerants in the MERM are kind of hard to read and I think ammonia properties are missing.  Does any one have a packet of better charts fir all refrigerants? 

i used the actual h'e leaving the turbine. however i didn't calculate the work at the pump at all. 

I understand the method in the merm. I was wondering if the way I did it will always be valid as well.  Basically the merm method looks at net work out (w from the pump subtracted from work from the turbine )divided by the heat addition at the boiler represented by (hd-ha). The method I used...

May I ask why you mention specific the Brayton cycle? 

Fit bit? I don't understand. Basically I find the needed Qout required on the condenser to get the fluid to the condition before the boiler feed pump then add that value to the turbine work out to get the total Qin. Then I divide the work out from the turbine by the Qin.

I am looking at problems 27.4 and 27.5 in the MERM companion and they both ask for the thermodynamic efficiency given the pump and turbine efficiency. The answer shows to use the steam tables then find all the enthalpies at all the stages and then find the actual  enthalpies  due to the pump and...

Funny you should ask, I actually have a scanned copy of this. How can I share it with you? 

Thank you so much.

I am going through the MERM practice problems and I am trying to do every one in every chapter.  My plan is to take the HVAC test in April.  I am having a really hard time with the problems in chapter 28 and 29. They are the reciprocating combustion and combustion turbine respectively.  How...

Hi all, When a compressible flow problem gives you a temperature and pressure in the set up, how do you determine if they gave you a static temp or a total temp? I think if the flow is originating in a tank the pressure and temperature of the gas in the reservoir would be considered the total...

What are the benefits of the Keenan and Keys Steam Tables over the MERM?