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NC-v4 EAp2:Minimum energy performance

End Energy Use Cost Consumption Air Cooled Vs Water Cooled Chiller

Dear All,

We are working on a hospital project outside USA where we have air cooled chiller because the region has shortage of water. We are losing big time in energy consumption as water cooled chillers are super efficient.

Our concern is that baseline energy cost should include water cost per month in order to have a fair comparison. Can we include make up water cost in this credit to prove that cost wise we are achieving mandatory 5 % even through we are losing in energy terms?

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Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 02/25/2019 - 23:36

This issue has been raised multiple times by projects primarily in the Middle East and I think such comparisons are not allowed. You could try to make your case with the reviewer to justify the rate difference but Appendix G is very clear about using identical rates.
Profile picture for user Marais.Jean
Jean Marais
b.i.g. Bechtold DesignBuilder Expert
LEEDuser Basic Member
581 thumbs up

Tue, 02/26/2019 - 05:53

I applaud the bigger picture thinking. LEED does have specific water credits and regional bonuses will apply if water is important in your region, but the design of the entire LEED certification has paid mind to how and where the points are distributed.

Tue, 02/26/2019 - 06:00

Thanks for your responses. Much appreciated.

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