Abstract:
Method to automatically manage and provide energy control and estimated energy savings for duty cycled HVAC&R equipment in an improved manner as compared to operation with hysteresis on/off thermostat control itself, wherein a time delay for control signals is determined which can provide selected energy savings and can be applied to control signals to a load unit. An electronic controller can be used as an add-on device in HVAC&R systems with thermostat control which automatically manages and provides the energy control for estimated savings for duty cycled HVAC&R equipment.
Abstract:
Method to automatically manage and provide demand control of duty cycled HVAC&R equipment in an improved manner as compared to operation with thermostat control itself, wherein electrical demand consumption can be controlled by exercising duty cycle control on an on/off system. An electronic controller can be used as an add-on device in HVAC&R systems with thermostat control which automatically manages and provide the demand control of duty cycled HVAC&R equipment.
Abstract:
A method for automatic control of HVAC&R equipment is provided with a controller that uses a short on cycle protection algorithm in an integrated manner with algorithms used to adjust the delay, on, and off time of a cycled control signal sent to a load unit from the controller to achieve energy and/or demand setpoints. Control is provided to detect and eliminate the short on cycle condition. Systems also are provided which include the controller providing short on cycle protection.
Abstract:
An electronic controller device for automatic control of a heating, ventilating, air conditioning or refrigeration (HVAC&R) system has a digital recycle counter that is capable of intercepting a thermostat command for cooling, refrigeration, or heating and replacing the thermostat command with a modulated binary signal that operates in an "on" state or "off state, and a computer-readable storage medium that comprises a program that includes an auto-configuration mode that is capable of determining a base line performance of the HVAC&R system through a commissioning phase and is capable of determining an adjusted performance based on energy consumption, temperature regulation, humidity regulation, or power limit or any combination thereof. The program can adjust the digital recycle counter "on" and "off states based on the adjusted performance determination to reduce energy consumption.