Go Back   Data Center, Colocation, Cloud Computing, Storage, Dedicated Servers Forums > General DataCenter Discussion Forum > Data Center Design, Development, Building Systems and Operations

Reply

 

Thread Tools
  #1  
Old 01-10-2009, 11:24 PM
Zitibake Zitibake is offline
Senior Member
 
Join Date: Dec 2005
Posts: 113
Default change in ASHRAE humidity

ASHRAE has switched from using relative humidity to absolute humidity. The new "recommended" is dew-point between 41.9 degrees F and 51F. Anyone know what the new "acceptable" range is for dew-point?

Looking at the old ASHRAE recommendations, the dew-points for "recommended" would have been between 51.2F (55%@68F) and 50.8F (40%@77F). The dew-points for the "acceptable" would have been between 52.8F (80%@59F) and 43.5F (20% at 90F).

So the top of the new "recommended" dew-point range (51F) is right in the middle of possible dew-points in the "recommended" range under the old system; but the bottom of the new system (41.9F) is even below the minimum dew-point possible within the "acceptable" range of the old system! Anyone know what the dew-point range is for "acceptable"?
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 04:13 AM.

Member Area



Data Center Industry Daily News


Cloud and Dedicated Hosting


Sponsors Managed Servers Sponsored by DedicatedNOW.
Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.