Heating and Cooling Analysis question

[mariam.said84939581]

Hi Everyone ,

I am new to Revit MEP 2013 and my supervisor has asked me to perform Heating and Cooling Analysis on our project , so I read the tutorial , I created spaces and did the zones , and set the offset height for spaces by creating sections on each space of the zones to get an accurate volume value.

Now when I do the analysis and the report shows up , some of the zones give me a " zero " Value for windows , walls , and roofs ....the wall of that area is an exterior "curtain wall" .. and about the roof I don't know why it is a "Zero Value" because I am sure that I assigned the right height .

I wish if anyone can help me with this issue because I repeated the calculations many times on that particular zones but it is still the same result.
Thank you,

Mariam

[tys90]

This is an easy one - don't use Revit for Heating and Cooling Analysis. All fixed!

[mariam.said84939581]

tys90 Can I know why?

[dennis howell]

http://forums.augi.com/showthread.ph...light=analysis

Hopefully you can click the link above to another discussion thread about using the Loads Analysis. And btw, nothing changed with the analysis from 2012 to 2013.

[Michael.c]

I can't speak for tys90 but my limited understanding is that there seems to be a significant variation from the results that Camel and IES spit out.
Whichever is the more accurate is anyone's guess.....perhaps.
Would it be true to say that Camel and IES have been around for such a long time that they are accepted as being the holy grail of air conditioning load estimation, whereas the in-built load estimation software in Revit is young and untested?
Personally I think that if it is there, it should be usable! And if there IS something drastically wrong, then it requires some sort of disclaimer.

[phyland]

I had a similar problem with a revit file. I started checking the architects model, none of the windows knew they were windows. I ended up breaking down the arch model to individual component parts. The load calc worked but I couldn't use it as I had substitued all the windows, walls etc for best guess out of the box elements.
When my engineer did a load in IES the values were very different as well.