[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[EnergyPlus_Support] entering residential thermal distribution efficiency

I am trying to figure out how to best incorporate duct losses using energy plus in my model of a typical residential home with all the ducts located within an unconditioned basement.  For starters, I am going to use a Delivery Effectiveness of 0.80 for both the heating and cooling.  Currently, I am using the "direct air" air distribution option to connect my systems to my zones.  Can I include the duct leakage by specifying a small fraction of my supply air to the basement zone and then include the conduction losses by using a simple energy balance to specify the air temperature leaving the registers as slightly reduced from the air temperature leaving the system coils.  

It seems that a duct heat transfer model was implemented as a function within the systems simulation module in DOE-2.1E for RESYS and I am wondering whether something similar was done for EnergyPlus.  Overall, my question is whether I can use "direct air" or some other air distribution system to include duct losses and if so, how can I go about doing this.

Thanks
Ian Doebber

[Non-text portions of this message have been removed]



------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com.  Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/dkFolB/TM
---------------------------------------------------------------------~->

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
     http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
     EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
     http://docs.yahoo.com/info/terms/