We have a high rise mixed use development in Bangalore, India for which we are following Appendix G methodology for LEED Energy compliance. The project comprises of Office block + Hotel Block + Residential block.
My question is on the selection of base case HVAC systems for such mixed use projects. As per ASHRAE 90.1 2004 App G "Where attributes make a building eligible for more than one baseline system type, use the predominant condition to determine the system type for the entire building."
Question is would you classify Hotel Block under commercial category or residential category? Classification of this hotel block is key to determine the predominant condition (either residential or non-residential) for selection of respective HVAC base case system.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
December 20, 2012 - 3:57 pm
Hotel is residential. See definitions. For the office look to the exceptions under G3.1.1 to determine appropriate baseline system.
Jesus Deras
Energy AnalystThe Wall Consulting Group
1 thumbs up
February 18, 2013 - 10:22 am
Marcus,
How do you treat conditioned corridor space in the hotel residential block? Is it residential or nonresidential? Based on table G3.1.1A, if you have more than 5 floors of corridor space does it make sense to have a chilled water system just to serve the corridors if its considered nonresidential space as per G3.1.1.A Notes If the corridor is considered residential do you combine with nearest PTAC?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
February 18, 2013 - 11:02 am
That is debatable. I would consider it residential but you could make a case for non-residential as well based on the definition of residential since the corridors are not technically living space.
Agree that a corridor only chiller makes no sense (but often the baseline does not make sense). If corridor is residential they would have their own PTAC units.