709results about How to "Significant energy saving" patented technology

A method of controlling and managing a plurality of system managers, a plurality of lights and devices, including human interfaces and building automation devices is disclosed. The method includes a system manager collecting data from the plurality of lights and devices. The system manager uses the collected data to determine an adjacency of lights and devices. The system manager dynamically places the plurality of lights and devices into zones and binding human interface devices to the zones, and a dynamically configures the devices to control the zones. The devices perform self-calibration and self-commissioning. The system manager and devices perform ongoing calibration and commissioning. The system manager and devices operate resiliently in case of failure of the system manager, other devices, or software or hardware failures in the devices. The system manager and the devices operate on the collected data to determine usage patterns, and to efficiently manage the plurality of lights and devices.

An energy-reducing method and apparatus for retrofitting a constant volume HVAC system, with or without an economizer, that provides heating, cooling, and ventilation to occupants within a building space. The present invention includes the introduction of a programmable logic controller and variable frequency drive (VFD) that takes control of the existing fan, heating, cooling, and optional economizer operation. The controller is programmed for the reduction of fan speed in the heating and cooling modes. The reduction of the fan speed in the ventilation mode when the 100% operation is not needed saves significant energy of the existing constant volume HVAC system where the fan motor is designed to run 100% of the time. The fan speed may be further reduced upon a reduction in sensed occupancy levels of the space, such as with a CO2 sensor. Additionally, the fan speed may be reduced in the heating and / or cooling mode to further reduce energy consumption. The controller may also be programmed and equipped with sensors to allow simultaneous mechanical compressor cooling and economizer free cooling operation, for the operation of the economizer in response to the monitoring of outside air and return air to determine the preferred source for cooling operations, to keep the outside air damper closed during the unoccupied heating modes such as morning warm-up, and / or to provide fault detection. The retrofit method and apparatus may be employed in a stand-alone or networked version.