See all forum discussions about NC-2009 EAc4
 Subscribe to new posts about NC-2009 EAc4 Post a new question aboutNC-2009 EAc4
See LEEDuser’s guidance on NC-2009 EAc4»
FAQs about EAc4 :

We plan on pursuing this credit only if we need to do so to meet our certification target, i.e. if another credit we are counting on gets rejected. How late can we apply for this credit?

I'm working on a renovation project and we'll be keeping some of the existing equipment. Shoud we include these systems in our calculations?

Which portions of a VRF/VRV system should be considered for this credit?


For a split system, does the cooling capacity refer to the cooling power of the interior device (evaporator) or of the outdoor unit (condenser)?

What is the required timeline for completing a CFC phase-out for EAc4?

How can I document a longer equipment life (20 or 30 years) than what is listed in the LEED Reference Guide?

Do the requirements apply to portable fire extinguishers or only permanently installed building-wide fire suppression systems?

View answers »

Forum discussion

NC-2009 EAc4:Enhanced Refrigerant Management

GWP / ODP of Water & Lithium Bromide

In our project a absorption chiller will be used to cover part of the cooling load. The chiller will run on lithium bromide / water solution. In this case, water is the refrigerant. Water is a natural refrigerant with GWP, but my feeling says in the LEED Online form GWP and ODP should be set to 0. As far as I know the water content in the atmosphere depends on temperature mainly and not on water vapour released by humans. Any hints or comments?

4
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user Nadav Malin
Nadav Malin
CEO
Green Commons, LLC
LEEDuser Expert
586 thumbs up

Sun, 02/19/2012 - 13:52

Hi Jens,Wow--it wouldn't have occurred to me that water would have to be listed as a refrigerant with its own GWP. I think that you're safe just omitting that--it's generally assumed that absorption chillers don't use climate-changing refrigerants. I haven't encountered this question before, though--anyone else have experience with this?

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.