Bidirectional Double-Circuit Heat Exchange for Flow Reversal Dehumidification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat exchange devices with fixed fluid flowing directions suffer from inefficient temperature difference distribution and humidity saturation gradients, leading to reduced heat exchange efficiency and increased dust accumulation and pollution.
Innovation Solution
A double flow-circuit heat exchange device with periodic positive and reverse directional pumping, controlled by a fluid direction-change operative control device, which also incorporates desiccant materials or moisture absorbing functions to enhance dehumidification and reduce impurity accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fluid flowing direction is fixed in conventional heat exchange devices, then the structure is simple and easy to operate, but the temperature difference distribution gradient between thermal exchange fluids and internal heat exchangers is inefficient, reducing heat exchange efficiency
Solution Approach 1:
The patent implements periodic reversal of fluid flowing directions through the bidirectional pump, alternating between positive and reverse directional pumping at set intervals. This periodic action optimizes temperature difference distribution gradients across the heat exchanger surfaces, enhancing heat exchange efficiency by preventing thermal boundary layer stagnation that occurs with fixed unidirectional flow
Solution Approach 2:
The system transitions from static unidirectional flow to dynamic bidirectional flow by incorporating a bidirectional pump controlled by a control device. The pump dynamically adjusts flowing direction based on operational requirements, enabling the system to adapt temperature difference distribution in real-time while maintaining manageable complexity through centralized control
2Productivity
If fluid flows in fixed direction, then the pumping system is simple, but humidity saturation degree differences at inlet/outlet ends create reduced dehumidification effect
Solution Approach 1:
The bidirectional pump periodically reverses fluid flow direction, causing the inlet and outlet ports to alternate roles. This periodic reversal equalizes humidity saturation degree differences that accumulate in fixed-direction systems, as each port experiences both high and low humidity conditions over time, significantly improving overall dehumidification performance
Solution Approach 2:
The system uses its own operational cycles to self-regulate humidity distribution. By alternating flow directions, the heat exchanger surfaces that would otherwise accumulate moisture saturation differences naturally reset and equalize humidity gradients through the periodic reversal, reducing the need for additional active dehumidification controls
3Object-affected harmful factors
If fluid flows in fixed direction, then the flow path is simple, but dust accumulation and pollution increase due to fluids flowing in the same direction continuously
Solution Approach 1:
The periodic reversal of fluid flow direction through bidirectional pumping prevents dust and pollutants from accumulating in fixed locations. By alternating flow directions, particles that would settle in unidirectional systems are continuously redistributed and flushed through the system, reducing pollution buildup on heat exchanger surfaces and in fluid channels
Solution Approach 2:
Instead of maintaining continuous unidirectional flow, the system inverts the flow direction periodically using the bidirectional pump. This inversion mechanism causes fluids to flow back through the same paths in reverse, effectively cleaning accumulated dust and pollutants from surfaces that would otherwise be subject to continuous one-way flow deposition
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 solution improves temperature difference distribution, increases heat exchange efficiency, promotes dehumidification, and reduces dust and pollution by dynamically changing fluid flow directions and rates, thereby optimizing the performance of the heat exchange process.
Implementation Method 1
periodically changing the fluid pumping direction of the two fluid circuits promoting heat exchange efficiency
Implementation Method 2
heat exchange device by pumping fluids in different flowing directions in a double flow circuit heat exchanger
Implementation Method 3
temperature difference distribution gradients between the thermal exchange fluids and the internal heat exchangers
Implementation Method 4
fluids flowing in different flowing directions through the heat exchanger
Implementation Method 5
heat can be further interposed or coated with permeation or absorbability type desiccant materials, or the heat exchanger itself can have a concurrent moisture absorbing function
Implementation Method 6
permeation or absorbability type desiccant materials
Data Source
AI summary
A double flow-circuit heat exchange device for periodic positive and reverse directional pumping having at least two bi-directional fluid pumps. The bi-directional fluid pumps produce positive pressure or negative pressure at fluid ports on two sides of the bi-directional heat exchange device to periodically pump the fluid in positive and reverse flowing directions. During operation of the periodically positive and reverse pumping, the directional flow of the fluid in first and second flow fluid circuits are maintained in different flowing directions.