Method and system for improving energy efficiency in an hvac system
AssigneeSiemens Industry, Inc.
InventorsColin Bester, Robert Bartmess
Life of this patent
Estimating the term…
Abstract
A method performed by a zone controller for a zone of a building for improving energy efficiency in a heating, ventilation, and air conditioning (HVAC) system is provided. The method includes operating in a ventilation mode. A temperature of the zone and outside air conditions for the building are monitored. A determination is made regarding whether to switch from the ventilation mode to an economizing mode based on a first set point for the temperature of the zone and based on the outside air conditions. The first set point is determined based on a second set point for the temperature that is different from the first set point. A determination is made regarding whether to activate the HVAC system based on the second set point.
Claims20
A method performed by a zone controller for a zone of a building for improving energy efficiency in a heating, ventilation, and air conditioning (HVAC) system, comprising:
- operating in a ventilation mode;
- monitoring a temperature of the zone;
- monitoring outside air conditions for the building;
- determining whether to switch from the ventilation mode to an economizing mode based on a first set point for the temperature of the zone and based on the outside air conditions, wherein the first set point is determined based on a second set point for the temperature different from the first set point;
- and
- determining whether to activate the HVAC system based on the second set point.
A zone controller for a zone of a building, comprising:
- a memory configured to store a subsystem application;
- and
- a processor coupled to the memory, wherein the processor is configured, based on the subsystem application, (i) to operate in one of a ventilation mode and an economizing mode, (ii) to monitor a temperature of the zone, (iii) to monitor outside air conditions for the building, (iv) to switch from the ventilation mode to the economizing mode based on a first set point for the temperature of the zone and based on the outside air conditions, wherein the first set point is determined based on a second set point for the temperature different from the first set point, and (v) to activate a heating, ventilation, and air conditioning (HVAC) unit based on the second set point.
A non-transitory computer-readable medium encoded with executable instructions that, when executed, cause one or more data processing systems in a zone controller for a zone of a building to:
- operate in one of a ventilation mode and an economizing mode;
- monitor a temperature of the zone;
- monitor outside air conditions for the building;
- determine whether to switch from the ventilation mode to the economizing mode based on a first set point for the temperature of the zone and based on the outside air conditions, wherein the first set point is determined based on a second set point for the temperature different from the first set point;
- and
- activate a heating, ventilation, and air conditioning (HVAC) system based on the second set point.
Dependencies are inferred from the claim text.