[Equest-users] Radiant ceilings

[Shalini Modi]

Arpan,

Thanks a lot for your response. I totally see what you are saying. I can sure create a how water and a chilled water loop and select 'hot water loop' as my heating source in heating tab. But in my cooling tab, my model wouldn't allow me to select a 'cool source' at all! It sticks with n/a, even though the drop down menu shows chilled water and electric DX as options, it won't let me select any of them....what do I do and why is this so?

Your response will be greatly appreciated.



Date: Mon, 25 Apr 2011 14:19:51 -0400
Subject: Re: [Equest-users] Radiant ceilings
From: arpanbakshi at gmail.com
To: shalinimodi at msn.com
CC: equest-users at lists.onebuilding.org

I would still use baseboards for radiant heating, FCU for radiant cooling. Build secondary water-side loops and assign baseboards to heating hot water secondary loop and fan coil to secondary chilled water loop.



On Mon, Apr 25, 2011 at 2:05 PM, Shalini Modi <shalinimodi at msn.com> wrote:






Thanks, Rob and Arpan. I will try using fan coil units - will that be a good representation of radiant slab heating and AC? As soon as I select VAV/PVAV as the system type, the cool source in the cooling tab doesn't allow any change...why is that so?


Shalini



Date: Mon, 25 Apr 2011 13:54:36 -0400
Subject: Re: [Equest-users] Radiant ceilings
From: arpanbakshi at gmail.com
To: rdh4176 at gmail.com

CC: shalinimodi at msn.com; equest-users at lists.onebuilding.org


Shalini
An alternate method is using fan coil units with turned down fans. Have you tried this already?


On Mon, Apr 25, 2011 at 1:34 PM, Rob Hudson <rdh4176 at gmail.com> wrote:


eQuest forces the cooling system of "VAV" to chilled water.  if you use "PVAV" or packaged VAV, then the cooling type is forced to be DX coils.  


Happy Monday!

Rob

On Mon, Apr 25, 2011 at 1:31 PM, Shalini Modi <shalinimodi at msn.com> wrote:







Hello all,

I need to model radiant ceiling for heating and cooling both. As per the suggestions in the archive (quoted below), I kept the system as VAV, reduced fan usage to represent radiant slab system's fan usage, kept my heating by water loop baseboards and cooling by DX and coil head and loop temperatures as per radiant slab system but after selecting the system type as 'VAV', in the cooling page, it won't allow me to select 'electric DX' as the cooling source.




Kindly advice how can I solve this problem.

Thanks a lot,

Shalini

[Equest-users] How do I model a building with radiant slab heat	ANDair conditioning?

    Bishop, Bill 
    wbishop at pathfinder-ea.com
       

    Tue Mar  2 14:03:52 PST 2010
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Rob,
 
Select the system based on the DX air conditioning, then add hot water
baseboards for the radiant slab. Set your baseboard capacity, coil head,
loop temperature etc. to match the radiant slab heating system.



 
Regards,
Bill
 
William Bishop, EIT, LEED(r) AP | Pathfinder Engineers & Architects LLP
Mechanical Engineer
 
134 South Fitzhugh Street
Rochester, NY 14608
T: (585) 325-6004 Ext. 114



F: (585) 325-6005
wbishop at pathfinder-ea.com


www.pathfinder-ea.com
P Please strive to live sustainably.         
________________________________

From: equest-users-bounces at lists.onebuilding.org



[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Rob
Rosen
Sent: Tuesday, March 02, 2010 4:34 PM



To: equest-users at lists.onebuilding.org
Subject: [Equest-users] How do I model a building with radiant slab heat



ANDair conditioning?
 
To All,
 
Is it possible to model a building with radiant slab heat (hot water
loop) and air conditioning? It appears to me that the eQUEST airside
system type for radiant slab heating is FPH (floor panel heating



system), and that this is "heating only".
 
Can anyone suggest a way to model a building that has both radiant slab
heating and DX air conditioning?
 
Thanks,
 
Rob Rosen
Senior Energy Analyst



Taitem Engineering
110 S. Albany St.
Ithaca, NY 14850
Phone: 607-277-1118 ext 110
Fax: 607-277-2119


www.taitem.com
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