Networked Load Switches for Plug-In HVAC Occupancy Control
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Solution Overview
Problem
Existing solutions for managing energy usage in portable heaters and window air conditioners lack effective temperature sensing and occupancy feedback, leading to inefficient energy management and potential user discomfort, as they are not compatible with central HVAC systems and lack sophisticated feedback mechanisms.
Innovation Solution
A networked load-control switch system that includes temperature sensors, occupancy sensors, and geolocation-enabled mobile devices, connected through the Internet to a server, which optimizes energy usage by adjusting settings based on occupancy and location data, ensuring efficient energy management and user comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If portable heaters and window air conditioners are used without networked load-control switches and sophisticated feedback mechanisms, then device simplicity and ease of manufacture are maintained, but energy management efficiency and user comfort deteriorate
Solution Approach 1:
A networked load-control switch is introduced as an intermediary device between the power source and the portable heater/window air conditioner. This switch includes a temperature sensor and microprocessor that can sense environmental conditions and control power delivery to the HVAC device, enabling efficient energy management without modifying the original simple HVAC device
Solution Approach 2:
The load-control switch is designed to be compatible with multiple types of portable HVAC devices (both heaters and air conditioners) and can be integrated into existing electrical outlets. The system provides multiple functions including temperature sensing, occupancy detection via mobile devices, remote control capabilities, and automated energy optimization, making a single device serve multiple purposes
2Use of energy by moving object
If portable heaters and window air conditioners are equipped with built-in thermostats and networking capabilities, then energy management capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The thermostatic control functionality, temperature sensing, and networking capabilities are extracted from the portable HVAC device itself and placed into a separate load-control switch. This allows the HVAC device to remain simple and easy to manufacture, while the control intelligence resides in the external switch that can be integrated into existing electrical infrastructure
Solution Approach 2:
The load-control switch serves as an intermediary that provides sophisticated control capabilities without requiring modifications to the original HVAC device. The switch includes a microprocessor, temperature sensor, and network connectivity, acting as a smart interface between the power source and the simple HVAC device
3Adaptability or versatility
If specialized load control thermostats are used for window air conditioners and portable heaters, then compatibility with portable devices is improved, but temperature sensing accuracy and occupancy feedback capability deteriorate due to lack of sophisticated sensors
Solution Approach 1:
The load-control switch includes a temperature sensor that continuously monitors environmental conditions and provides feedback to the microprocessor. The system also integrates with geolocation-enabled mobile devices to detect occupancy status, creating a feedback loop that enables accurate temperature control and energy optimization based on actual environmental conditions and user presence
Solution Approach 2:
Traditional mechanical temperature sensing and occupancy detection methods are replaced with electronic sensors and digital communication technologies. The system uses electronic temperature sensors with higher precision and wireless geolocation technology to detect occupancy, replacing simpler mechanical or non-digital approaches
4Use of energy by moving object
If programmable thermostats are used for central heating and cooling systems, then energy savings are improved, but operational complexity and user programming difficulty increase
Solution Approach 1:
The load-control switch is designed to operate automatically based on temperature sensor readings and occupancy detection, eliminating the need for manual programming by users. The microprocessor autonomously makes control decisions based on environmental conditions, providing energy savings without requiring user intervention or complex programming
Solution Approach 2:
The system continuously monitors temperature and occupancy conditions and automatically adjusts operation accordingly. This feedback-driven automatic control eliminates the need for manual programming while maintaining energy efficiency, as the system adapts to changing conditions in real-time
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables efficient energy management by optimizing heating and cooling based on real-time occupancy and temperature data, reducing energy consumption and user discomfort, while also allowing remote control and monitoring, thereby addressing the limitations of existing technologies.
Implementation Method 1
at least one load control device at a first location comprising a temperature sensor and a microprocessor
Implementation Method 2
A networked load-control switch system that includes temperature sensors, occupancy sensors, and geolocation-enabled mobile devices, connected through the Internet to a server
Data Source
AI summary
Thermostatic HVAC and other energy management controls that are connected to a computer network. For instance, remotely managed load switches incorporating thermostatic controllers inform an energy management system, to provide enhanced efficiency, and to verify demand response with plug-in air conditioners and heaters. At least one load control device at a first location comprises a temperature sensor and a microprocessor. The load control device is configured to connect or disconnect electrical power to the an attached air conditioner or heater, and the microprocessor is configured to communicate over a network. In addition, the load control device is physically separate from an air conditioner or heater but located inside the space conditioned by the air conditioner or heater.