Wall Air Passageways With HVAC Feedback for Moisture Control
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Solution Overview
Problem
Existing systems fail to effectively reduce, inhibit, or eliminate water and moisture accumulation and mold growth in exterior and interior walls of habitable structures, leading to potential damage and health issues.
Innovation Solution
The implementation of air passageways within walls, coupled with a HVAC system that supplies conditioned air, controlled by valves and nozzles, to dry and maintain a uniform temperature and moisture level, thereby reducing moisture accumulation and inhibiting mold growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air passageways are installed in walls to improve moisture removal, then moisture accumulation is reduced, but device complexity increases
Solution Approach 1:
The wall structure is segmented into functional zones including air passageways, weep holes, and cavities that separate moisture transport paths from structural components. This segmentation allows targeted moisture removal while maintaining structural integrity.
Solution Approach 2:
Air passageways serve as intermediary channels between the interior wall cavity and exterior environment, facilitating moisture transport without requiring direct penetration of wall structures. The passageways act as mediators that enable moisture control while preserving wall integrity.
2Reliability
If HVAC system with valves and nozzles is used to control air flow, then moisture accumulation is inhibited, but device complexity increases
Solution Approach 1:
The HVAC system incorporates adjustable valves and nozzles that dynamically control air flow rate and distribution patterns. This dynamic control allows the system to adapt to varying moisture conditions and environmental factors, optimizing moisture prevention while managing system complexity.
Solution Approach 2:
The system uses moisture sensors and environmental monitors that provide feedback to the HVAC control system. This feedback mechanism enables automatic adjustment of air flow parameters to maintain optimal moisture levels, reducing the need for complex manual control systems.
3Reliability
If weep holes are sized and spaced to control air flow out of walls, then moisture removal is improved, but manufacturing precision requirements increase
Solution Approach 1:
The wall system incorporates zones with different weep hole densities and configurations tailored to local moisture accumulation patterns. Areas prone to higher moisture accumulation have denser weep hole patterns, while drier zones have sparser patterns, optimizing moisture removal without requiring uniform high precision throughout.
Solution Approach 2:
The system varies weep hole parameters (size, shape, spacing) across different wall sections to achieve optimal moisture control. This parameter variation allows the system to meet moisture evacuation requirements while relaxing manufacturing precision requirements in less critical areas.
4Temperature
If conditioned air is supplied continuously to maintain uniform temperature, then temperature uniformity is improved, but energy consumption increases
Solution Approach 1:
The HVAC system operates in periodic cycles, alternating between conditioning phases and recovery phases. During conditioning phases, air is supplied to maintain temperature uniformity; during recovery phases, the system reduces operation allowing natural thermal equilibrium to establish, thereby reducing overall energy consumption while maintaining acceptable temperature uniformity.
Solution Approach 2:
The wall air passageway system provides passive thermal regulation by allowing natural convection currents to distribute heat through wall cavities. This self-service mechanism reduces the burden on the active HVAC system, lowering energy consumption while maintaining temperature uniformity.
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 effectively dries and maintains the desired moisture and temperature levels within walls, preventing mold growth and ensuring a healthier indoor environment by continuously adjusting air flow to maintain uniform conditions throughout the structure.
Implementation Method 1
a heating, ventilation, and air conditioning unit (HVAC) that supplies conditioned air to the air passageways
Implementation Method 2
the conditioned air flow is designed to dry, to reduce moisture accumulation
Implementation Method 3
valves, nozzles, and a size and a spacing of weep holes or air outlets associated with the walls and passageways or pathways to control the amount and direction of air flow
Implementation Method 4
to maintain a substantially uniform temperature in the structure throughout the day
Data Source
AI summary
A structure comprises at least one outer wall having an internal wall section and an outer wall section with an air flow passage therebetween. A circulation system circulates air through the flow passage to inhibit moisture accumulation and mold growth. A sensing system determines the presence of moisture in the flow passage and generates a signal in response thereto. A controller receives the signal from the sensing system and controls the circulation system to maintain a predetermined temperature and relative humidity in the flow passage.