Dynamic humidity control system
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Solution Overview
Problem
Conventional humidity control systems are energy intensive and struggle to maintain precise relative humidity due to the non-linear relationship between relative humidity, temperature, and moisture content, often requiring constant rate additions or removals of humidity.
Innovation Solution
A dynamic humidity control system that includes a damper, motor, humidity sensor, and controller to adjust airflow and humidity levels based on real-time readings, using a humidifier to maintain desired relative humidity with minimal energy consumption, and optionally incorporating air circulation and image or gas sensors to adapt to specific items within the chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional humidity control systems cool and reheat air to control humidity, then relative humidity can be controlled, but energy consumption increases significantly
Solution Approach 1:
The system changes the control parameter from temperature-based indirect control to direct humidity control using a humidity sensor. The controller directly adjusts the humidifier based on real-time humidity feedback, eliminating the need for cooling and reheating cycles, thus reducing energy consumption while maintaining control accuracy.
Solution Approach 2:
The patent replaces the mechanical thermal processing system (cooling and reheating) with a direct humidification system controlled by electronic sensors and a controller. This substitution eliminates the energy-intensive thermal cycles while achieving precise humidity control through electronic feedback.
2Ease of operation
If conventional systems add or remove humidity at a constant rate, then the control process is simple, but it is difficult to maintain desired relative humidity due to non-linear relationship between temperature and humidity
Solution Approach 1:
The system implements a feedback control mechanism where a humidity sensor continuously monitors the actual humidity level and sends signals to the controller. The controller compares the measured humidity with the desired setpoint and dynamically adjusts the humidifier operation, enabling precise humidity maintenance despite the non-linear temperature-humidity relationship.
Solution Approach 2:
The control system transitions from static constant-rate humidification to dynamic control where the humidifier operation is continuously adjusted based on real-time humidity measurements. This dynamic adjustment allows the system to adapt to changing conditions and maintain accurate humidity levels.
3Use of energy by moving object
If a damper system is added to control airflow exchange, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The damper is integrated into the existing air circulation system, serving dual functions: controlling airflow exchange between the chamber and external environment, and working in conjunction with the humidifier to achieve humidity control. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in system 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 effectively regulates relative humidity within a chamber with minimal energy use, maintaining desired levels between 75% and 100% RH, and can dynamically adjust based on the presence of different items, enhancing preservation of food and artifacts.
Implementation Method 1
a damper adjustable between one or more open positions and a closed position for selectively allowing an airflow exchange between the chamber and the low humidity environment
Implementation Method 2
activate the humidifier to provide moisture to the chamber
Data Source
AI summary
A humidity control system for regulating the relative humidity of a chamber enclosed within a low humidity environment is provided. An exemplary humidity control system includes features that can provide for dynamic control of the relative humidity of the chamber, utilize relatively minimal energy, readily maintain the desired relative humidity within the chamber, and/or some combination thereof.