Baseline System 8

The Reference Guide outlines two methods you can use to account for systems that are outside the project's scope of work.

Depending on the systems in the building you may need to model more than the floor, but the methods described allow you to allocate the HVAC loads to your single floor. So most projects only have to model the scope of work for the LEED project.

Hi,

Taking this question, I would like to verify the following:

- In may case, the whole building has the same schedule, so I am using the Adjustment Factor method.

- I only have to model the Floor in the LEED scope of work.

- The main building HVAC system consists on water and air cooled chillers, corresponding pumps and cooling tower.

- Adjustment Factor = Scope of Work surface/Total Surface Served by the chilling water system.

- For each equipment in the HVAC main system I apply:

• Chiller # 1 Power(1) = Adjustment Factor x Chiller #1 Power
• Primary Pump Power(1) = Adjustment Factor x Primary Pump Power.
• And so....

Is this right?,

Thank you!

That is correct, and would be done for all parameters relevant to the chilled water system (chilled water flow rate, condenser fan power, etc.).

Thank you Tyler!

relevant to this,

I have a case in which my space and other spaces are served by one AHU, so I considered that my AHU air flow (lps) = Adjustment Factor x whole floor's AHU flow (lps).
But if I do the same for the AHU fan power I'm getting to model (virtually) a fan that is not efficient at all (less than 20% efficiency), and not getting any savings, so in such case, I intend to keep the AHU fan efficiency constant, adjust flow rate, and keep fan power automatically calculated based on actual fan efficiency, is this acceptable?

This does not appear to be acceptable, as it will not result in a proportionate amount of fan power for the AHU being applied to your space.