Overall HVAC System Strategy

Building Mechanical Plan

To achieve the goal of a good HVAC design, three things are taken into consideration in my design: Proper size of the HVAC system, energy reduction (utilising natural ventilation and sunlighting).

I used outdoor AHU - Horizontal as the Air Handling Unit and put it on the roof of the building. I also divided the room/space into different zoning as VRV dual zoning, which means places that need HVAC, and natural ventilation zoning, which includes the atrium and the balconies.

Analytical Space

The functionality on each floor is different. The office room size is different. Therefore, based on the required heating and cooling load of each room, I set the different number of air terminals in each room, and keep the hallway to be cooled or heated all the time. Every room in my building design has natural sunlighting and windows so that I can reduce quite a lot of energy.

HVAC system challenges

It is hard to organize the height of the input duct, output duct and air terminal. I spend a lot of time in adjusting the height of the duct to make it can keep in the same room or hallway.