Re: [EnergyPlus_Support] New US weather data set available

["David Scheer - L+U" <david@xxxxxxxxxxxxxx>]

A question about the new TMY3 data.

The precipitation value in the EPW version of the file seems to be the "Pwat" or "Precipitable Water", which is defined in the TMY3 user's manual as "The total precipitable water contained in a column of unit cross section extending from the earth's surface to the top of the atmosphere."  How is this used, or can this be used in E+?  How can we translate this to information about rainfall?  There is a column for Liquid Precipitation Depth in the TMY3 (mostly no data -9900, but...), wouldn't this be more useful for, as discussed, green roof calcs, etc?  Is there a plan to translate Pwat to chance of liquip precip?

Thanks.  Nice to see all the new stations.

r3  



  ----- Original Message ----- 
  From: Crawley, Drury 
  To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
  Sent: Friday, May 16, 2008 1:06 PM
  Subject: [EnergyPlus_Support] New US weather data set available


  Last week NREL released a new TMY3 weather data set for 1020 US
  locations. These completely update and replace all of the locations in
  the older TMY2 data set.

  All 1020 TMY3 files are available on the EnergyPlus web site: 

  http://www.eere.energy.gov/buildings/energyplus/cfm/weather_data.cfm

  (Look under North and Central America or Southwest Pacific.)

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



   

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


------------------------------------

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.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

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

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> 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/