Portable EMW Drying for Flood-Damaged Wood Frames
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Solution Overview
Problem
Wood-frame constructions exposed to floodwaters face significant challenges in drying structural members quickly enough to prevent mold and fungal growth, as existing methods are time-consuming and require disassembly or complex equipment, leading to prolonged building unavailability.
Innovation Solution
A portable electromagnetic-wave (EMW) drying apparatus and method that directs EMW at structural members within a wood-frame construction to reduce moisture content, allowing for in-situ drying with a sequence of EMW exposure and resting periods, ensuring structural integrity and safety without the need for disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional air drying methods are used for flood-damaged wood-frame structures, then the drying process is simple and requires no special equipment, but the drying time extends to three-to-five weeks or longer, allowing mold and fungal growth
Solution Approach 1:
The patent replaces the passive mechanical air drying process with an electromagnetic wave-based heating system. The electromagnetic waves penetrate the wood and generate internal heat through dielectric heating, actively accelerating moisture evaporation from the cellular structure. This substitution of the drying mechanism reduces drying time from weeks to minutes while preventing mold growth by rapidly lowering moisture content below the 20% threshold.
Solution Approach 2:
The patent utilizes phase transition of water from liquid to vapor through electromagnetic heating. The electromagnetic waves heat the water molecules within the wood, causing rapid evaporation and removal of moisture. This phase change process is dramatically accelerated compared to natural evaporation, achieving the required moisture reduction from 30% or greater to below 20% in minutes rather than weeks.
2Productivity
If existing drying equipment is used, then drying capability is improved, but the equipment is complex, stationary, and requires disassembly of wall coverings and structural members
Solution Approach 1:
The patent replaces complex stationary drying equipment with a portable electromagnetic wave generator. The system uses electromagnetic radiation to heat and dry wood directly, eliminating the need for mechanical air circulation systems, kilns, or other complex drying infrastructure. The portable design allows deployment without disassembling structural members or removing wall coverings.
Solution Approach 2:
The electromagnetic wave drying system is self-contained and portable, requiring no external infrastructure or complex setup. The device can be positioned anywhere and autonomously performs the drying function through electromagnetic heating, eliminating the need for disassembly of wall coverings or structural members that would be required by traditional drying methods.
3Ease of operation
If structural members are disassembled for drying, then drying access is improved, but building availability is prolonged and restoration cannot proceed
Solution Approach 1:
The patent replaces the need for mechanical disassembly and physical access to structural members with non-contact electromagnetic wave heating. The electromagnetic waves penetrate the wall coverings and directly heat the wood from the interior, eliminating the need to remove wall coverings or disassemble structural members for drying access. This allows the building to remain occupied and restoration to proceed concurrently.
Solution Approach 2:
The electromagnetic drying system requires no physical access to or disassembly of structural members. The portable device can be positioned externally and the electromagnetic waves penetrate through wall coverings to treat the wood internally, allowing the building structure to remain intact and available during the drying process.
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 EMW treatment method accelerates the drying process, reducing moisture content to safe levels within minutes, compared to weeks, while being portable and cost-effective, allowing for rapid remediation of flooded wood-frame structures without physical damage or prolonged downtime.
Implementation Method 1
providing a source of electromagnetic waves; directing said electromagnetic waves to contact at least a portion of said structural member
Implementation Method 2
accelerates the drying process, reducing moisture content to safe levels within minutes
Data Source
AI summary
A portable electromagnetic wave drying apparatus is provided for the in-situ reduction of moisture in structural members within a wood frame construction. The apparatus comprises at least one electromagnetic wave generation assembly and an electromagnetic wave applicator. Also provided is an electromagnetic wave treatment method for the in-situ reduction of moisture content in a structural member within a wood frame construction. The method comprises contacting a portion of the structural member with electromagnetic waves for a period of not more than 30 minutes and then allowing the structural member to rest for a period of not more than 90 minutes. The apparatus and method are useful in the remediation of wood frame structures that have been exposed to flood waters.