It prohibits the design of dual duct
systems with hot/cold air mixing in new buildings, additions, and replacement of portions or existing buildings.
The configuration of the dual duct
air-handling system at the end of the living wall project will look as shown in Figure 5.
Project Overview: modify one (1) existing air terminal box to one (1) room, provide new VAV cooling only air terminals and air distribution system to two (2) rooms, install an existing dual duct
air terminal and air distribution system for one (1) office, all diffusers to be owner furnished, controls updated by Automated Logic of Wisconsin.
* Dual duct
VAV with minimum airflow control on the cold duct
It focuses on single duct VAV reheat systems, but most of the principles apply to other VAV system variations, such as dual duct
and fan-powered box systems.
The existing built-in dual duct
air handler serving dual duct
mixing boxes shall be replaced with rooftop gas pack type air conditioners.
The equipment used in those days to air condition commercial office buildings was high velocity, dual duct
systems--and bypass multizone systems for large office buildings.
This study also found that the global thermostat strategy had less of an impact on buildings served by a central plant using dual duct
systems since this system type would respond to a zone setpoint temperature increase by reducing the cold deck air flow rate.
An alternate system considered is a dual duct
This article will demonstrate that a version of a dual duct
HVAC system will save considerable amounts of operational energy compared to the standard system.
An unusual feature is that the metal decking installed to form the floors was used to convey air from dual duct
boxes to air outlet grilles on the floor above.
Converting dual duct
constant volume systems to variable volume systems without retrofitting the terminal boxes.