We are designing HVAC for a car showroom with ground floor and a mezzanine floor above it. So the front half of the showroom (entry) has 20 feet height and the back half having discussion rooms, conference rooms and accessories counters is 10ft height with a mezzanine floor of another 10ft on the top. The mezzanine floor has 3 side wall and 1 side glass.
What is the most energy efficient way of cooling the space?
The mezzanine floor has independent splits.
The idea we have for the remaining portion is to have duct running on the ceiling of the ground floor and throw air towards the front entrace. So the concern we have is that the air in front of the mezanine floor in the front portion may not be cooled and may affect the overall cooling of the space (ground floor and front portion of the mezanine floor.