[Equest-users] Fwd: heat recovery and zone exhaust

[Vipul Babriya]

Thanks Bruce,


The project is located in NYC, and the DOB has already been approved the design. The intent is to recover the conditioned air from apartment and use it to preheat the 100% OA that will be supplied to Corridors using heat recovery wheel.

Thanks,
Vipul

 

 

 

-----Original Message-----
From: Bruce Easterbrook <bruce5 at bellnet.ca>
To: Vipul Babriya <vipulbabriya at aol.com>
Cc: wbishop <wbishop at pathfinder-ea.com>; JHANSEN <JHANSEN at ghtltd.com>; equest-users <equest-users at lists.onebuilding.org>
Sent: Thu, Sep 12, 2013 5:34 pm
Subject: Re: [Equest-users] heat recovery and zone exhaust


          
    I don't think building codes will allow you to do      that, not easily anyway.  An Ontario/Canada        perspective though.  Each of the apartments will          be it's own fire compartment.  Everything            breaking this barrier will need fire dampers.  All fire            dampers need man access.  May be much            more trouble than it is worth.
              Bruce Easterbrook P.Eng.
                Abode Engineering
                  
                    
On 12/09/2013 04:35 PM, Vipul Babriya      wrote:
    
    
Hello Bill/James,
          
          I have a typical situation for DOAS system that serves fresh          air (100% OA) to corridor spaces in multifamily building. The          DOAS unit is equiped with heat recovery wheel, and uses the          exhaust air from apartments, i.e. exhaust from bathroom and          kitchen rather than return air from corridor itself. How would          i model the system that uses recovered heat from one system to          another in the eQUEST.
          
          Thanks in advance for your help.
          
          Regards,
          Vipul   
                  
 
          
          
 
          
          
 
          
          
-----Original            Message-----
            From: Bishop, Bill <wbishop at pathfinder-ea.com>
            To: James Hansen <JHANSEN at ghtltd.com>; equest-users            <equest-users at lists.onebuilding.org>
            Sent: Wed, Dec 15, 2010 10:04 am
            Subject: Re: [Equest-users] heat recovery and zone exhaust
            
            
                            
                
                  
James,
                  
 
                  
Make sure                        to NOT enter zonal exhaust flows                        if your intention is for the air to return to                        the ERV. Specifying zonal exhaust                        simulates air leaving the zone through a                        separate exhaust fan (think bathrooms,                        kitchens, clothes dryers) and not returning to                        the air handling unit.
                  
 
                  
Regards,
                  
Bill
                  
 
                  
                    
William                            Bishop, PE,                            BEMP, LEED®                            AP | PathfinderEngineers                            & 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   Sustainability–                          the forest AND the trees. P 
                  
                  
                    
                          
                        
                    
From: equest-users-bounces at lists.onebuilding.org                          [mailto:equest-users-bounces at lists.onebuilding.org]                          On Behalf                              Of James Hansen
                          Sent:                          Wednesday, December 15, 2010                          9:59 AM
                          To:                          equest-users at lists.onebuilding.org
                          Subject:                          [Equest-users] heat                          recovery and zone exhaust
                  
                  
 
                  
I’m                        having the typical issues with getting an                        enthalpy wheel to show appreciable                        savings.  I’ve adjusted some of the control                        sequences, and have                        managed to show a savings in cooling energy, but                        I’m getting no heating                        savings, which is strange, unless my building is                        actually asking for cold OA                        during the winter because of the rather large                        internal heat loads (my guess is                        that this is true).
                  
 
                  
My                        question is whether you HAVE to define zonal                        exhaust airflow rates to properly                        show the savings from heat recovery, or if the                        program knows that the exhaust                        will roughly match the OA delivered to the                        space?  Do I have to turn on                        exhaust tracking?
                  
 
                  
GHT                          Limited
                        James                              Hansen, PE,                          LEED AP
                  
Senior                          Associate
                  
1010                            N. Glebe Rd, Suite 200
                  
Arlington, VA  22201-4749
                  
703-338-5754                        (Cell)
                  
703-243-1200                        (Office)
                  
703-276-1376                        (Fax)
                  
www.ghtltd.com
                  
 
                  
 
                
              
            
            
              
_______________________________________________
Equest-users mailing list
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
To unsubscribe from this mailing list send  a blank message to 
EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG

            
                      
              
      
      
      
_______________________________________________
Equest-users mailing list
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
To unsubscribe from this mailing list send  a blank message to EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG

    
    
  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20130913/fd080eee/attachment-0002.htm>