Radiation Heating Elements for Building Board Drying
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Solution Overview
Problem
Existing drying devices for building boards, particularly gypsum-based and cementitious boards, face challenges in reducing energy consumption while maintaining drying efficiency, and often require significant spatial and energetic resources.
Innovation Solution
The proposed drying device incorporates a plurality of radiation elements with a heating medium circulating in ducts, allowing for a temperature fluctuation of at most 30°C, which enhances uniform drying and reduces energy consumption. This configuration can be integrated into existing drying devices without increasing their volume, utilizing alternative heating sources like heat recovered from the drying process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If convective heating with hot air is used for drying building boards, then drying efficiency is achieved, but energy consumption is high
Solution Approach 1:
The patent replaces the conventional convective heating system (mechanical air circulation) with a radiation heating system using infrared radiation elements. This substitution eliminates the need for large volumes of hot air circulation, significantly reducing energy consumption while maintaining drying efficiency through direct radiative heat transfer to the building boards.
Solution Approach 2:
The patent utilizes infrared radiation to directly excite water molecules in the building boards, causing phase transition from liquid to vapor. This direct thermal excitation through radiation enables efficient evaporation without requiring high-volume air circulation, thus reducing energy consumption while maintaining drying performance.
2Manufacturing precision
If multiple drying zones with different temperatures are used, then drying uniformity is improved, but device complexity increases
Solution Approach 1:
The patent divides the drying chamber into multiple zones with independent radiation element control. Each zone can be adjusted to provide optimal drying conditions for different sections of the building boards, achieving uniform drying without requiring complex mechanical air circulation systems. The segmentation allows independent temperature control of each zone while simplifying the overall device structure.
Solution Approach 2:
The patent implements dynamic control of radiation element temperatures in different zones, allowing real-time adjustment of heating intensity. This dynamic temperature control enables uniform drying by adapting to varying moisture distribution in the building boards, while the electronic control system simplifies the overall device complexity compared to mechanical air circulation systems.
3Use of energy by moving object
If radiation elements with temperature fluctuation of at most 30°C are used, then energy consumption is reduced, but drying capacity must be maintained
Solution Approach 1:
The patent changes the temperature parameter of radiation elements to operate within a narrower range (at most 30°C fluctuation). This parameter control optimizes energy consumption by avoiding excessive temperature variations while maintaining sufficient drying capacity through prolonged exposure time and optimized radiation intensity. The controlled temperature parameter enables efficient heat transfer without energy waste.
Solution Approach 2:
The patent ensures continuous operation of radiation elements with stable temperature output (at most 30°C fluctuation). This continuous useful action maintains consistent drying conditions throughout the drying process, preventing energy waste from temperature cycling while ensuring sufficient drying capacity. The continuous radiation provides steady heat input that efficiently removes moisture from building boards.
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 achieves high drying efficiency with low energy consumption, maintaining or improving drying performance while reducing spatial and energetic requirements, and allowing for lower investment costs.
Implementation Method 1
a plurality of radiation elements, each comprising a heating medium circulating in a duct
Implementation Method 2
Water is usually evaporated by convective heating, where hot air passes along the surface of the board and removes the water vapour
Data Source
AI summary
A drying device for building boards including at least one drying zone. The at least one drying zone includes a plurality of radiation elements each including a heating medium circulating in a duct. Each radiation element has a temperature fluctuation of at most 30° C.