- your overall HVAC system strategy
- your heating strategy and how you implemented it in your design
- your cooling strategy and how you implemented it
- any special HVAC system challenges that you encountered
I started my design with the climate consultant tool developed my UCLA, I used Quito's information, even though it has different climate conditions. My active system will not have a heating feature, only cooling and ventilation. One of the most important design strategies is internal heat gain, providing 4577 hours of comfort, and this can be achieved considering my project is going to have meeting rooms, seminars rooms, dinners, exhibitions rooms etc.
The passive design will take advantage of Ecuador's solar exposition, with curtain walls and also with the addition of glass at the roof above the atrium.
I add cooling loads and air flows to my space schedule to have a better idea of the demand each space will required.
Then I considered the roof, walls and floor slabs as a schematic type, considering the default properties. At this point I also joined spaces to make HVAC zones.
With all the previous work I run my heating and cooling analysis with 268,835W as the maximum cooling load.
For my modeling in this project I considered a rooftop air handler because I have a lot of free space in the roof, the I used rigid ducts to go down, I continued with the rigid ducts to cross all the way to the cafe. I used VAV zone controllers for the zones, I only modeled the south wing of the building. But for the last mile I used flex ducts to the air terminals.
I have problems with the sizing of the ducts based on the inspector.