Search found 3 matches

by Elevera
Thu Oct 15, 2015 9:36 am
Forum: ASHRAE 90.1 App. G - PRM
Topic: BPRM Report
Replies: 3
Views: 11861

Re: BPRM Report

The same happened to me.
There were some constructions assigned to shading elements and adjacent buildings that were coming up in the report.
I changed them all to constructions that are actually used in the building I am analysing.
In this way they are removed from the report as well, but:

1 ...
by Elevera
Mon Oct 12, 2015 12:05 pm
Forum: ASHRAE 90.1 App. G - PRM
Topic: PRM - Fan power calculation
Replies: 2
Views: 6932

Re: PRM - Fan power calculation

I have noticed the same thing.

For a baseline system type 7 with a fan supply flowrate of 19698.96cfm and a pressure drop adjustment of 4 in. w.c., IES gives a fan power of 23.9kW.

Manually applying the ASHRAE calculation I get 35.8kW.
It is quite a significant difference!

Has anyone found the ...
by Elevera
Sun Oct 11, 2015 11:58 am
Forum: ASHRAE 90.1 App. G - PRM
Topic: PRM Sizing reports bug?
Replies: 1
Views: 5867

PRM Sizing reports bug?

I noticed that the Airflows section in the sizing reports for both the baseline and proposed systems is not populated. It shows 0 l/s in all room and the %OA at the AHU level is 0% as well.
All OA flowrates and exhaust air flowrates are correctly set in all Loads spreadsheet and in the system file ...