Multifunction adaptive whole house fan system
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Solution Overview
Problem
Traditional air conditioning systems in buildings consume significant energy and fail to remove harmful environmental elements like dust and pollutants, as they merely circulate indoor air without bringing in fresh outside air.
Innovation Solution
A multifunction adaptive whole house fan system that uses motorized windows and a controller to automatically open and close for ventilation, leveraging outside air for cooling when temperatures allow, and integrating with air conditioning systems to optimize energy use based on temperature and air quality conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air conditioning systems are used to cool buildings, then cooling effect is achieved, but energy consumption increases and harmful environmental elements remain trapped inside
Solution Approach 1:
The patent combines the air conditioning system with a whole house fan system and automated window controls into an integrated ventilation system. This merging allows the system to switch between air conditioning mode and natural ventilation mode, reducing energy consumption by utilizing outside air when conditions are favorable while maintaining cooling capability when needed.
Solution Approach 2:
The system dynamically adjusts its operation mode based on real-time monitoring of outside temperature, humidity, and air quality conditions. The controller automatically switches between air conditioning, whole house fan ventilation, and automated window ventilation modes, optimizing energy usage while maintaining comfortable indoor conditions.
2Temperature
If air conditioning systems circulate indoor air, then cooling is provided, but harmful environmental elements like dust and pollutants remain within the building structure
Solution Approach 1:
The system extracts harmful pollutants from the indoor environment by introducing outside air through the whole house fan and automated windows. This extraction of fresh air replaces stagnant indoor air containing accumulated pollutants, dust, and chemicals, thereby improving indoor air quality while maintaining cooling effects.
Solution Approach 2:
The system changes the air composition parameter by introducing outside air with different quality characteristics. The controller monitors air quality conditions and adjusts the proportion of outside air intake versus recirculated indoor air, optimizing both cooling efficiency and air quality by varying the air source parameters.
3Use of energy by moving object
If whole house fan systems are used to move air through the building, then energy consumption is reduced, but automated window control and system complexity increase
Solution Approach 1:
The system achieves multi-functionality by integrating the whole house fan, automated window controls, air conditioning interface, and environmental sensing capabilities into a single unified system. This universal system can perform multiple functions including cooling, ventilation, air quality management, and energy optimization, reducing the need for separate systems while managing complexity through integration.
Solution Approach 2:
The system incorporates self-service capabilities through automated sensors and controllers that monitor environmental conditions and automatically adjust system operation. The automated window controls and controller system independently manage ventilation based on real-time conditions, reducing the need for manual intervention and simplifying user interaction despite the system's complexity.
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 reduces energy consumption by utilizing outside air for cooling, improves indoor air quality, and efficiently manages air conditioning usage, providing a comfortable and cost-effective environment by automatically adjusting ventilation and cooling modes based on temperature and air quality.
Implementation Method 1
Whole house fans include one or more high cubic feet per minute (cfm) fans, typically placed in the attic of a building structure, and function by creating a negative static pressure inside of the building structure to draw air in from the outside.
Implementation Method 2
The outside air is moved through the ceiling into the attic where the air is exhausted out through a vent by positive static pressure in the attic or upper floor.
Data Source
AI summary
A multifunction adaptive whole house fan system can include a whole house fan to pull large volume of air through a building structure. The whole house fan can pull air from a motorized window or damper into the building structure and expel air through an attic. The system can monitor the environment to operate the whole house fan when desired conditions are present in coordination with other systems of the building structure to reduce overall energy consumption.