[Bldg-sim] Ened Results analysis

[Cheney]

Hi Sambhav,

I just did a quick yet simple calculation for you as follows:

1. Assuming plant load is X
2. Assuming chiller energy requirement is Y
3. Y1= X/3.2 and Y2 = X/2.6
4. Y1/Y2 = (X/3.2) / (X/2.6) = 0.81

In this case, around 20% difference is possible.

Cheers,

Cheney
LinkedIn @ http://ca.linkedin.com/pub/yu-cheney-chen/27/637/72b

On Mon, Nov 22, 2010 at 9:28 PM, sambhav tiwari <tiwari.sambhav at gmail.com>wrote:

> Hi All,
>            In one of Projects i have air cooled chillers (VAV system)
> in Proposed Case and Packaged VAV system in base Case. I defined one
> alternative of Proposed Case in which i changed VAV system to Packaged
> VAV with COP decrement of 2.6 from 3.2 of Air cooled screw chiller my
> energy consumption is going up as excepted but it is going up to  20%
> which is a matter of concern .Just by changed the HVAC system from VAV
> to PackagedVAV and reducing COP from 3.2 to 2.6 can bring  20% of
> increment is it ok?
>
> I look forward for some response
>
> Thanks
> Sambhav
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