[Bldg-sim] System sized by "block" or "peak"?

[Karen Walkerman]

There can be a large difference but depends on your particular building.
For example, buildings with lots of glass on the east and west.  The cooling
loads in these individual spaces may be quite large, but the east has a high
cooling load in the morning while the west has a high cooling load in the
afternoon/evening.  My understanding for LEED is that the design case
systems are sized as in the design documents.  This provides punishment for
system inefficiency due to oversizing.

--
Karen


On Thu, May 1, 2008 at 3:24 AM, <yizhao1 at vt.edu> wrote:

> Hi -
> How great the difference could be if a system is sized by "block"
> compaired to
> being sized by "peak" in Trace? If "sized by peak" means sizing the system
> based on peak load, what about "sized by block"? For LEED credit
> application, Iov
> thought that it is not right to size an AHU by "block" in the design case
> while
> size it by "peak" in the baseline.
>
> Thanks!
>
> Ying
>
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