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Refrigerant enthalpy diagrams

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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? 

 

Unintended Max P.E.

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Between what is in the MERM and what is in my Thermodynamics text book, I had adequate resources.  If you do not have a Thermodynamics text book, I still think you will be ok.  But I recommend having one as a resource for other information.  Mine was an old edition (2nd) of the Black and Hartley (english/SI edition) text, which I believe can be picked up from Amazon pretty reasonably.  I see they have the 3rd edition for 82 bucks.  But for this information specifically, I'm sure there are better resources.  I can only say that based on my exam experience, it was unnecessary to have additional resources.

 
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Between what is in the MERM and what is in my Thermodynamics text book, I had adequate resources.  If you do not have a Thermodynamics text book, I still think you will be ok.  But I recommend having one as a resource for other information.  Mine was an old edition (2nd) of the Black and Hartley (english/SI edition) text, which I believe can be picked up from Amazon pretty reasonably.  I see they have the 3rd edition for 82 bucks.  But for this information specifically, I'm sure there are better resources.  I can only say that based on my exam experience, it was unnecessary to have additional resources.
I am taking the HVAC depth, so you think the enthalpy charts in MERM will be sufficent for refrigerant problems? 

 

Unintended Max P.E.

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I guess I should have specified that my info/experience was with TFS.  I can't say with any certainty that it would be sufficient for HVAC depth.

 

starquest

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Oh I remember that question.  I went searching for NH3 tables on the net for awhile...ended up skipping it entirely.  

 

Habib

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Use ASHRAE fundamentals, it has all the tables and ph diagrams you are looking for.

I think, if the question requires the use of ref table then most likely it will be provided by NCEES so don't worry too much about it.

 

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