If a proposed chiller (or boiler) meets the Tables 6.8.1A-J in 2007 or 2010, when tested with water at AHRI conditions but is designed to be used with glycol for freeze protection, then its actual

The prescriptive path under Option 3 still references the "Advanced Buildings Core Performance Guide".  However, this guide has been "sunset" by NBI and no longer exists.  Typic

Hi all, does anyone have any reference to USGBC guidance or experience in modeling CHP when it is electricity lead not thermal lead? 

i need to know what is required to be filled exactly in roof construction and whatis meant by building ID ??

We have a project space where the built up area is 2 lakh sqft out of which the conditioned space is 1000 sqft. Is energy modeling necessary in this scenario?

As we are outside of the USA, ASHRAE 90.1:2010 is a new requirement that came with v4 and our designers have no experience in interpreting and applying the mandatory requirements.

Can you take credit for occupancy sensors that control HVAC systems? I am thinking probably not for system operation E.g setbacks, agree? But I am unsure for the ventilation.

We have a Green Building Council in Australia that has a very advanced energy simulation methodology that achieves the same outcomes as the ASHRAE 90.1 process outlined in LEED.

Hi all, Could anyone clarify if Ireland is in climate zone 5A or 5C? Thanks in advance

Does anyone know wether or not evaporator input power should be included in the efficiency calculation of a VRF system?