Cool air at the floor is the key to more efficient heat removal @ the ceiling. Creating a flow up to the Hot Air Axe increasing efficiency.
Server rooms, I T room Cooling - cool air intakes at floor level, pointing existing A.C. unit cool air supply toward the floor, curtains containing the server heat, room coolers, HVAC, A.C. supply ceiling panels replacing conventional panels,supplies cooler air to the floor.
Kitchens - cool air intakes @ floor level, in the exterior door, curtains to contain grill & oven heat. Creating a calm(windless area) @ the ceiling. Cool air intakes @ bottom of doors pulls coolest air in from outside or adjacent office area.