[BLDG-SIM] System 6 and High Efficiency Window

[Fred Porter]

Newer DOE-2.2 versions allow choice of keyword COOL-SOURCE for PIU
system type. Values either ELEC-DX or CHILLED-WATER. Choosing
COOL-SOURCE = ELEC-DX and, for the zones, TERMINAL-TYPE = PARALLEL
creates "System 6." 

 

This option may only be available in text mode. See the latest  I can't
find it on the menu screens in my version of EQ v3.61.

 

 

--

Fred W. Porter, B.S., LEED A.P.
Senior Engineer
Architectural Energy Corp.



 

  _____  

From: Garcia, Robert [mailto:RGarcia at akf-eng.com] 
Sent: Thursday, August 23, 2007 10:57 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] System 6 and High Efficiency Window

 

There seems to be little reponse to the issue of modeling System 6 of
ASHRAE 90.1-2004.  Has anyone been able to model a Packaged VAV with PFP
Boxes in eQUEST?

 

Robert Garcia

AKF Engineers, LLP
1500 Walnut Street, Suite 1400
Philadelphia, PA 19102 
Phone:   (215) 282-2182

Fax:        (215) 735-6706
www.akf-engineers.com

   -----Original Message-----
   From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of
   Garcia, Robert
   Sent: Wednesday, August 22, 2007 2:46 PM
   To: BLDG-SIM at gard.com
   Subject: [BLDG-SIM] System 6 and High Efficiency Window

   I would like to discuss question number 1 as well.  Appendix G
   specifies that Direct Expansion be used as the cooling type for
   System 6.  However, the PIU system in eQuest does not allow you to
   use DX coils.  I have seen several archived posts on this same
   question that say to model a chiller equivalent to the DX coils, but
   nothing further.  I have redefined the chiller performance curves
   accordingly with no success.  Has anyone set up this system
   succesfully in eQuest?  

    

   In response to Questions 2 and 3, the U-value and Shading Coefficient
   of the glass has significant impact on the energy savings with the
   HVAC system.  In addition, the visible light transmittance of the
   glass directly impacts the Daylighting controls within the rooms
   affecting electric usage.  The selection of glass should be
   investigated when determining the window-wall ratio and the resulting
   savings.

    

   Robert Garcia

   AKF Engineers, LLP
   1500 Walnut Street, Suite 1400
   Philadelphia, PA 19102 
   Phone:   (215) 282-2182

   Fax:        (215) 735-6706
   www.akf-engineers.com

    

   -----Original Message-----
   From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Virdi
   Permana
   Sent: Wednesday, August 22, 2007 1:59 PM
   To: BLDG-SIM at gard.com
   Subject: [BLDG-SIM] System 6 and High Efficiency Window

      Hello All,

      Quick question on System 6: Package VAV w/PFP boxes.

      1. How do you use system 6 in eQUEST? Do you have to use parallel
         PIU at the zone? 
      2. At what percentage of window to wall ratio that high efficiency
         can star contribute significant saving? 
      3. At what number is considered significant saving? 

      Any respond is greatly appreciated.

       

      Sincerely,

       

      Virdiansyah "Virdi" Permana

      EMSI

      Energy Analyst

      (202) 291 3102 T

      (202) 291 3107 F 

       

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