FAQs about EAp2 :

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

Our project has a diesel backup generator. Should we include it in our energy model?

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

Can mezzanines open to floors below be excluded from the energy model?

How do I provide a zip code for an international location?

For a project outside the U.S., how do I determine the climate zone?

For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

water cooled chillers

Hi Marcus, I am working on a project in KSA of about 404330ft2. According to that area and with reference to ASHREA appendix G, a water cooled chiller should be considered in baseline of the model. The HVAC represents 56% of the total energy consumption of the building. The building is totally under the ground and complying with ASHREA requirement for envelope, heating, lighting,...etc. The availability of water and approval of municipality to provide water for the HVAC system is almost impossible and if so contractor shall extend the grey water line for about 60km to reach the site. The other option is to transport water by vehicles and this can severely affect the operation of the building. Is there any possible solution? or can be any relax to this prerequisite to respect the environmental conditions of this project?

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Sun, 10/23/2016 - 19:51

You are not required to install a water cooled chiller for your project. You are only required to model a water cooled chiller in the Baseline model.

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