Comparison Cooling Load between Revit MEP and Carrier HAP

[just_vip2003]

Hi guys;

I finished the cooling load on Revit MEP and HAP, and you can see the result from the two calculations almost same.

Please guys see the attachment file and give your notes on it.

Thanks

[tys90]

Hi guys;

I finished the cooling load on Revit MEP and HAP, and you can see the result from the two calculations almost same.

Please guys see the attachment file and give your notes on it.

Thanks

Interesting, mind sharing the model? I might compare it to Trane TRACE700 if I have some time.

[shaneasemple]

Did you use gbxml export/import to get the model into HAP, or the old fashioned method?

[just_vip2003]

Did you use gbxml export/import to get the model into HAP, or the old fashioned method?

Not Export to HAP, create new HAP file and put all the values on it.

[walz]

I am just curious to know something ... if you can please answer how you did that.

I have been trying to do the same excercise for a couple of months.

My question is that how could you manage to U-Values of building envelope to be same in both HAP and Revit. In Revit MEP, for any space, you can chose the wall and galzaing type from the drop down list only, but in HAP you are able to create any kind of Wall and window for any U-Values.

2. When i did the test run comparison between HAP and Revit, i got the two loads close to each other but not that closer as yours. Tell me have you obtained both of these results occuring at same time of the day. In my case, it was one hour difference. e.g., in HAP it was showing at 1600 hours while in Revit it was 1500 hours.

[trythefly]

I am just curious to know something ... if you can please answer how you did that.

I have been trying to do the same excercise for a couple of months.

My question is that how could you manage to U-Values of building envelope to be same in both HAP and Revit. In Revit MEP, for any space, you can chose the wall and galzaing type from the drop down list only, but in HAP you are able to create any kind of Wall and window for any U-Values.

2. When i did the test run comparison between HAP and Revit, i got the two loads close to each other but not that closer as yours. Tell me have you obtained both of these results occuring at same time of the day. In my case, it was one hour difference. e.g., in HAP it was showing at 1600 hours while in Revit it was 1500 hours.

Bump thread......

[m20roxxers]

U values are an XML file which you can customize to suit the materials and standards you use.

This is located in the project file and can be manipulated with notepad.

[atailson_filho657706]

Not Export to HAP, create new HAP file and put all the values on it.

I tried to import gbxml file exported from Revit into HAP4.4, but message appears that U value range is too large or too small than HAP accept ?!!


How can I import gbxml into HAP?

[daniel.lodge]

I have also just tried this.
I setup my HAP model and Revit model to the NZBC reference building settings......and in Revit, I could not modify the wall constructions, so I just picked the closet U-Value that I could find.

It was a simple room with a roof and a floor and no windows or doors.

my heating loads came out almost bang on the same......but my cooling loads came out quite different.
(64kw in HAP and 56kw in Revit) 8kW is too much different in my opinion.
Also, just as your model.....Revit had a peak load occuring in Jan at 1500, whereas HAP had it occuring in Jan at 1400.

I have since realised you can edit the construction.xml file, but have not yet had a chance to play around with it.

Does anyone know where revit gets its weather data from? and can we define our own weather data?

[bashar_jaara285897]

Hi guys;

I finished the cooling load on Revit MEP and HAP, and you can see the result from the two calculations almost same.

Please guys see the attachment file and give your notes on it.

Thanks

thank you for your analysis,but i want to ask you question about revit calculations i couldn't understand it.
when i define space and make calculations,how revit will understand that there is partition with toilet or stair? because the result in the report give (0 watt) for partition, how can i identify partition in the space.

Thx
Bashar