[Bldg-sim] what shall be the reason that so little number of software is approved for California title 24?

[Joe Huang]

Because the California Energy Commission has a thorough and some would say onerous certification procedure requiring the software vender to do a suite of 160 certification test runs to demonstrate that their software produces results that are consistent with the Commission's results.  All this is spelled out in Chapter 5 (if my memory is correct) of the Commission's 350+ page ACM (Alternate Compliance Method) manual. How this will change in the future is not clear since the Commission has embarked in 2007 on a new procedure where they would take charge of the entire compliance calculation procedure, instead of specifying the rules.

Sent from my IPad

Joe Huang


On Feb 20, 2013, at 7:08 PM, zhang xiangjing <geshen516 at gmail.com> wrote:

> HI all
> 
> Do you have any idea why there are only three packages approved for California title 24 ACM?
> 
> Approved software list is at link below.
> http://www.energy.ca.gov/title24/2008standards/2008_computer_prog_list.html
> http://www.energy.ca.gov/title24/2005standards/2005_computer_prog_list.html
> 
> 
> Regards
> ZHANG Xiangjing
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