Elementary/ High Schools Double Duct
(Dual Duct)
with Central
Air-Handler and
Chilled Water

Double Duct (Dual Duct) with Central Air-Handler and Chilled Water

This system is most applicable for buildings with a high volume of people such as classrooms, meeting rooms in hotels and public spaces in commercial buildings. These applications typically have high ambient loads. This system uses two ducts per zone of constant volume air with one for cooling and the other for heating. These feed mixing dampers in the space (zone), which blend the air to control comfort. The mixing boxes are available in small supply air capacities making this system applicable to small spaces encountered in multiple room buildings. Combining with the chilled water system, it allows for part load control enhancing the overall system efficiency.

This system requires the following components: