Patent ID: 11946661
Assignee: nan
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An HVAC system for use in a building having a return air duct, the building being maintained at one or more temperatures, the system comprising:
an air handling unit comprising a cooling circuit portion for providing a cold air airstream, a first return air damper for admitting return air from the return air duct into the cold air airstream, and a first cooling element disposed in the cold air airstream for cooling the cold air airstream, the air handling unit further comprising a bypass circuit portion for providing a bypass air airstream, independent of the cold air airstream, and a second return air damper for admitting return air from the return air duct into the bypass air airstream; and
a controller configured to determine a hot ambient air condition where the temperature of the ambient air is higher than the one or more temperatures maintained in the building, close the second return air damper, and use the first return air damper to provide return air to the building in response to the hot ambient air condition.