[Equest-users] Equest Air-Side HVAC Loads vs. HAP Calculated Loads

[Li, Lan]

I had a previous project - school. I compared eQuest with Elite. The
results are not that different.  I also used Trane Trace. The building
loads from three are all comparable - not same for sure.

 

Thanks!

 

Lan

 

________________________________

From: Carol Gardner [mailto:cmg750 at gmail.com] 
Sent: Tuesday, May 11, 2010 3:26 PM
To: Brooks Stout
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Equest Air-Side HVAC Loads vs. HAP
Calculated Loads

 

Phooey. forget the caps. That's what caused this to go prematurely. So,
don't tune equest to hap. equest is not a program designed for sizing
systems, yet. I used to use hap to inform me, ie provide info to input
into equest. A better use of time is a careful review of your output: is
it reasonable? On the other hand, depending on what you are using the
model for, it may be correct to input the btuh values for cooling &
heating from hap into equest. Is this a LEED project?

Give me a little more info based on the wandering remarks above, okay?

Regards,
Carol

On Tue, May 11, 2010 at 12:19 PM, Carol Gardner <cmg750 at gmail.com>
wrote:

Hi Brooks,

It has been a long time since I used HAP but I use eQUEST all the time.
I would not spend too much time worrying about making the output of
tuning eQUEST

On Tue, May 11, 2010 at 10:49 AM, Brooks Stout
<BStout at barrettwoodyard.com> wrote:

	We are working on a high-rise office building which is all
curtainwall, and has a high fenestration percentage. We have calculated
the air-side HVAC loads for our project via HAP, and are comparing them
to the "eQUEST System & Zone Air-Side Summary Report" calculated design
capacity values. The eQuest values appear to be much higher, and a large
part of this increase is in the "Window Glass+Frm Cond" value displayed
in the LS-B reports. Has any one compared the eQuest system sizing
values to HAP or another load calculation program and experienced
similar results? Should we spend the additional time trying to tweak the
model so it more closely matches the HAP calculated values, or simply
move forward with comparing the eQuest building to the baseline?

	 

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