[Bldg-sim] IES VE Dehumidification Question

[Dr Paul Carey]

Kevin,

 

Is this not because the room heat loads and cooling loads calculation sheet
pulls results from your .clg and .htg files not your .aps file?

 

Paul

 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kevin Campbell
Sent: 14 February 2013 22:39
To: Chris Yates
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] IES VE Dehumidification Question

 

I'm using all prototype systems, and they all have humidity controllers
attached to the coil/room when imported.  Looking at those controllers they
have a setpoint of 50% RH with a 10% deadband.  I don't know if that's
standard with the prototype systems or if it's pulling that from my room
conditions tab, but either way everything seems to be pointing to 50% RH.

 

 


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KEVIN CAMPBELL, EIT, CxT


ANALYST


t: 402.464.3833 x2129


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From: Chris Yates [mailto:chris.malcolm.yates at gmail.com] 
Sent: Thursday, February 14, 2013 4:21 PM
To: Kevin Campbell
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] IES VE Dehumidification Question

 

Difficult to diagnose from your description but certain zone level system
settings become redundant when you use aphvac. 

Are you using the controllers in aphvac to control humidity via coils or are
you expecting aphvac to the "find" settings in your zone "room
conditions"tab?

It's not always obvious what settings become redundant.

Sent from my Android device. Please excuse typos, etc.

On 14 Feb 2013 14:16, "Kevin Campbell" <Kevin.Campbell at megroup.com> wrote:

Building Simulation Community - 

 

I'm having issues with humidity in some models I'm running while trying to
use ApacheHVAC. I have set my "Maximum Percent Saturation" to 50%, and in
the VE ASHRAE Loads Results Data tab of the loads data spreadsheet it shows
that max input as 50%. If I go into Vista and highlight my "filename.asp"
file for the run that is linked to my ApacheHVAC system and run the "Heating
and Cooling Report" and look at the "Comfort - Occupied" section all of my
rooms have a Max% Relative Humidity of 85-100%. This is the same if I select
"Systems" from the drop down and investigate Relative Humidity on a node by
node basis at the rooms in my ApacheHVAC system.

Rooms in my model that are not assigned to an ApacheHVAC system and are left
with the default ApacheSystems system show that they are being maintained at
50% RH.

All rooms whether assigned to the ApacheHVAC systems or the default systems
show that they're letting room temperatures float to Unoccupied setpoints
during the "Comfort - Occupied" times.

Any help on this would be greatly appreciated, the buildings I'm trying to
work on are located in Louisville, KY and Tampa, FL so not accounting for
dehumidification is going to vastly effect the cooling load.

Thanks,

 

 


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KEVIN CAMPBELL, EIT, CxT


ANALYST


t: 402.464.3833 x2129 <tel:402.464.3833%20x2129> 


 <http://www.megroup.com/index.php/greenbuild2012> WE'RE ON OUR JOURNEY TO
GREENBUILD 2012!

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