[Bldg-sim] Expert advice to show minimum efficiency compliance Table 6.8.1C [1 Attachment]

[Mayank Bhatnagar]

Hi Javed,

In my opinion the air-cooled chiller efficiency should be used. As in the
hybrid cooler (with water sprayer), the water spray is limited to only 200
hours in a year which is approximately 2-5% of the total hours in a year.
So the worst case scenario would be air-cooled chiller.

Thanks.

Regards,
Mayank Bhatnagar
Senior Project Manager

*Environmental Design Solutions Pvt. Ltd. [EDS]*
D - 1/25
Vasant Vihar
New Delhi - 110057
India

On Mon, Mar 5, 2018 at 10:47 PM, Javed Iqbal via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> Hello,
>
>  I would appreciate your expert advice on selecting 90.1-2010 Baseline
> system to show minimum efficiency compliance as given under *Table 6.8.1C*.
> One of the proposed project i am working on has two* Chillers*
>
>    1. *One  with Std. Dry Coolers *
>    2. Second chiller has special arrangement where the surrounding air of
>    cooling tower being cooled (dry bulb) by some sort of misting to increase
>    the dry cooler effectiveness during extreme outdoor condition (CZ5A) ~ 80%
>    lower water consumption compared to typical water cooled cooling tower. In
>    this hybrid cooling tower, evaporation effect is happening but not like
>    std. water cooled cooling tower.
>
> ​ To show minimum efficiency compliance, *what condenser type do i need
> to choose*; Air or Water Cooled in both the Cooling tower type; Std Dry
> cooler and Hybrid Dry cooler (see image below)?  ​Also find an attachment
> to have more info
> ​​
> ​
> on the product.
>
>
>
> ​
> ​Thank you so much.
> regards,​
>
> --
>
>
> Javed Iqbal, LEED AP, CEA
> Sr. Energy Analyst
>
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