We are working on a retail mall where each tenant retail space is provided with a chilled water tap off. The Supply air CFM, fresh air CFM and cooling capacity tr is already calculated and the type of air side system (Ceiling suspended unit, fan coil unit) is already determined in the HVAC design.
The base builder will only provide the tap off. Air side HVAC system is not provided by the base builder. Under these circumstances, what type of system should be modeled in designed case for tenant retail areas? Do we go ahead with the base builder envisaged systems or consider identical to base case as the base builder is not providing the air side system.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
February 2, 2017 - 10:32 am
It depends. You can model these spaces identical to the baseline system. If you wish to claim some savings you could possibly model the least energy efficient possible air system type from your base design and make the case that the results are conservative. You could also provide some requirements in the tenant lease agreement to install a certain type of system and use that.