[Equest-users] Calculation of Average efficiency in case of central chiller plant serving to both phase of building

[Mayank Bhatnagar via Equest-users]

Dear Vishal,

There is a methodology in *Appendix C* for calculation of average
efficiency for Proposed Case  for option 2 of "Treatment of district or
campus thermal energy in LEED v2 and LEED 2009- Design & Construction"
document.. Appendix C describes two methods for virtual plant average
efficiencies a). Monitoring b) Modelling.

To avoid complexity in modeling and if you are not seeking more than 10 or
12 points as per project type, you can also go for Option 1 which does not
require to model any plant side system (Chilled water meter is sufficient).

Hope this helps :)


Regards,

Mayank Bhatnagar
Sr. Energy Analyst,
Environmental Design Solutions Pvt Ltd.
New Delhi.
On Aug 25, 2016 7:27 PM, "Vishal Jagdale via Equest-users" <
equest-users at lists.onebuilding.org> wrote:

> *Hi,*
>
>
> Our working project has One (1) central chiller plant (4 nos. of chiller +
> 4 nos. primary & secondary pump + 4 Cooling Tower) which is serving to the
> both phase 1 & phase 2 area…whereas currently we are working on the phase2
> model.
>
>
> Hence our question is-*What capacity & efficiency to be consider for
> modelling phase2 chillers, pump & cooling tower in E-quest?*
>
>
> As per the USGBC guidelines for the *treatment of district cooling*, we
> need to calculate average efficiency. So can anyone guide us on *how to
> calculate the average efficiency? *
>
>
> However the same guidelines suggest to consider the *default efficiencies*
> in case of unavailability of average efficiency.it says COP of 4.4 for
> the total cooling plant average efficiency (including cooling towers &
> primary pumps).*Can anyone guide us on how to take it (default
> efficiency) into account for all the system while modelling in Equest?*
>
>
>
> *Regards,*
>
> *Vishal*
>
>
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