[Bldg-sim] converting CDD from Celsius to Fahrenheit

Larry Degelman ldegelman at suddenlink.net
Sat Oct 27 08:26:43 PDT 2012


Assuming you’re referring to degree day bases that are exactly equal (e.g. “50F and 10C”  or “68F and 20C”, then the conversion should be simply HDDF = 1.8 * HDDC and CDDF = 1.8 * CDDC, since the values are incremental above a base temperature and not an absolute temperature.  In a literal sense, these are actually Rankine DD and Kelvin DD respectively.

Larry Degelman
Professor Emeritus of Architecture
Texas A&M University.
========================== 

From: Christian Stalberg 
Sent: Saturday, October 27, 2012 8:54 AM
To: bldg-sim at lists.onebuilding.org 
Subject: [Bldg-sim] converting CDD from Celsius to Fahrenheit

Can anyone tell me what the conversion equation would be for going from cooling degree days in Celsius to same in Fahrenheit?

 

Thanks!

 

---

Christian Stalberg
Principal
Natural Intelligence, LLC  
http://naturalintelligence.us 
Tel. 919.986.9237



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