Wireless HVAC Zone Control Using Energy-Harvesting Dampers
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Solution Overview
Problem
Conventional HVAC systems face challenges in efficiently controlling environmental parameters across multiple zones in buildings, leading to temperature and humidity inconsistencies, high installation costs, and energy inefficiencies due to the need for complex wiring and centralized control systems.
Innovation Solution
A wireless HVAC system that includes energy-harvesting dampers with integrated energy storage and temperature controllers, allowing for zone-specific control of air flow and temperature regulation using wireless communication between dampers, temperature controllers, and a control box, which can operate independently of central power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single centrally located thermostat is used to control HVAC systems, then the system complexity is reduced, but the temperature control precision in various regions deteriorates
Solution Approach 1:
The patent divides the building into multiple environmental zones, each with its own thermostat and control capabilities. This segmentation allows independent temperature control in different regions (e.g., upstairs/downstairs, different rooms) while maintaining overall system coordination, thus improving temperature control precision without excessive complexity
Solution Approach 2:
The patent introduces a hierarchical control structure with both local zone thermostats and a central HVAC controller operating at different levels. This multi-dimensional control approach enables simultaneous local precision (zone level) and global coordination (building level), resolving the contradiction between simplicity and precision
2Measurement precision
If manually adjustable dampers or valves are installed in duct work and pipes, then the temperature control in various regions is improved, but the ease of operation deteriorates
Solution Approach 1:
The patent replaces manual mechanical damper adjustment with automated electronic control systems. Electronic dampers receive control signals from thermostats and automatically adjust their positions, eliminating the need for manual intervention while maintaining precise temperature control in different zones
Solution Approach 2:
The system enables dampers to self-adjust based on temperature feedback from sensors and control logic in thermostats. The automated control system continuously monitors temperature conditions and makes real-time damper adjustments without requiring user intervention, thus maintaining precision while improving ease of operation
3Ease of operation
If electric motors or pneumatic components are used to actuate dampers, then the ease of operation is improved, but the device complexity and installation cost worsen
Solution Approach 1:
The patent extracts the complex wiring and pneumatic infrastructure from the damper control system by implementing wireless communication between thermostats and dampers. This removes the need for extensive electrical wiring or pressurized air lines while maintaining automated control capabilities, thus improving ease of operation without adding device complexity
Solution Approach 2:
The system transitions from wired/pneumatic control parameters to wireless communication parameters. By changing the control medium from physical connections to wireless signals, the patent eliminates complex installation requirements while preserving automated damper actuation functionality
4Measurement precision
If multiple thermostats and sensors are installed in each room or zone, then the temperature control precision is improved, but the device complexity and installation cost worsen
Solution Approach 1:
The patent replaces extensive wired thermostat and sensor networks with wireless communication devices. Each zone can have its own thermostat and sensors that communicate wirelessly with the HVAC system, maintaining zone-specific temperature control precision while eliminating complex wiring requirements
Solution Approach 2:
The wireless communication devices serve multiple functions: temperature sensing, humidity sensing, user interface, and communication with the HVAC system. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing overall device complexity while maintaining precise zone control
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
This solution enables efficient, zone-specific control of environmental parameters, reduces installation costs by eliminating complex wiring, and enhances energy efficiency by allowing for decentralized operation and real-time adjustments to temperature and humidity levels.
Implementation Method 1
an energy harvesting device adapted to capture energy within an HVAC conduit
Implementation Method 2
an energy storage device adapted to store energy captured by the energy harvesting device
Data Source
AI summary
A system and method to control environmental parameters of predefined zones within a structure. An embodiment of the system uses damper assemblies that are entirely wireless as a result of energy capturing devices which convert air flow within the HVAC system ductwork into electrical current and a wireless control module that remove the need for hard-wiring for power or control. Still further, an embodiment of the system uses wireless components to monitor the environmental parameters of a structure's zones, process and communicate necessary zone adjustments, and actuate system components.