[Bldg-sim] ECB Vs Appendix G

[David Eldridge]

The purpose of the ECB method is to show pass/fail compliance with 90.1 due to trade-off within the building - for example where a prescriptive measure couldn't be met.  The answer is that the proposed design uses less (or more) energy cost than the base.

Appendix G is intended to provide a percentage improvement over a wide range.  It is designed to provide a comparison against a "standard baseline" instead of ECB which is intended for trade-offs within what might largely be a prescriptive compliance option.

Obviously there are many similarities between the two and some chance for overlap.  But think Appendix G for demonstrating performance, and ECB for code compliance, knowing the procedures for each are tweaked to be more effective for the respective goal.

-DSE

Sent from my iPhone

On Nov 30, 2010, at 2:42 AM, sambhav tiwari <tiwari.sambhav at gmail.com> wrote:

> Hi All,
>           Have any one  idea about the difference between Energy cost
> budget method and Appendix G for Baseline building  For example in ECB
> method we dont have to take average of four orientation like App G
> 
> Many this are similar like LPD building envelope U value HVAC
> efficiency ,are there any more difference may be like Baseline Fan
> power calculation is it same for both?
> 
> I shall be obliged if any one can elaborate more difference between the two
> 
> Thanks
> Sambhav.
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