HVAC control system and methods for operating same

摘要

A system and method for operating an HVAC system having a cooling system and ventilation system to vent outside air within a structure is disclosed. The method includes monitoring an interior temperature of the structure, monitoring an exterior temperature of ambient air outside of the structure, defining a first time range and a second time range, associating one or more operating parameters of the HVAC system with the first time range, associating one or more operating parameters of the HVAC system with the second time range, monitoring operational time and operational load of the cooling system for the first time range, and controlling the ventilation system during the second time range based upon the monitored operational time and operational load of the cooling system in the first time range, and the monitored interior and exterior temperatures.

主权项

1. A method for operating a ventilation system and a cooling system to vent outside air within a structure, the method comprising:
monitoring an interior temperature of the structure; monitoring an exterior temperature of ambient air outside of the structure; defining a first time range and a second time range, wherein the second time range comprises a duration less than the first time range; associating one or more operating parameters of the ventilation system and the cooling system with the first time range; associating one or more operating parameters of the ventilation system and the cooling system with the second time range; monitoring operational time and operational load of the cooling system for the first time range; controlling the ventilation system during the second time range based upon the monitored operational time and operational load of the cooling system for the first time range, the monitored interior and exterior temperatures, and the one or more operating parameters of the cooling system associated with the second time range; and executing a first sum of products calculation for operational time and operational load of the cooling system associated with the first time range; executing a second sum of products calculation for operational time and operational load of a heating system associated with the first time range; differencing the second sum of products from the first sum of products; and controlling the ventilation system to an ON operating state during the second time range when the differencing result is a positive value.