Dear Leed users,
Baseline building based on ASHRAE 90.1-2010:
- In my case based on paragraph G3.1.2.11 and in accordance with Section 6.5.6.1 due to the climate zone and the %outdoor air at full design airflow rate “my baseline building” require Heat Recovery System.
- Due to the climate Zone from Table G3.1.2.6A an Economizer is not required.
My question is about the control of the heat exchanger in the baseline building. In paragraph 6.5.6.1 is mentioned: “Provisions shall be made to bypass or control the energy recovery system to permit air economizer operation as required by 6.5.1.1”.
The tables of 6.5.1.1, Table 6.5.1.1A and B mention about control of Economizer.
Also is in the baseline building required an economizer required or not? I mean, Table G3.1.2.6A and tables 6.5.1.1A and B seems to be in contradiction.
I am waiting gor you comments. Thanx
Tyler Thumma
7GroupLEEDuser Expert
67 thumbs up
February 14, 2020 - 8:35 am
If Table G3.1.2.6A does not require an economizer for your climate zone then an economizer should not be modeled in the Baseline system, and the heat exchanger would not need to be bypassed to permit economizer operation.
Konstantina Kalliakoudi
Mechanical Engineer13 thumbs up
February 18, 2020 - 2:27 am
Dear Stephan,
You don't need an Economizer at your baseline model. But maybe to consider that you will need a pass to by pass the heat Exchanger. The by pass will controled from Enthalpy conditions or Temperature Conditions it depends on your climate zone.