Counter Circulating Liquid Processing System for Thermal Desalination
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Solution Overview
Problem
Current desalination technologies are expensive, energy-intensive, and environmentally unsustainable, with low production yields due to inefficient use of thermal energy, making them unsuitable for large-scale, cost-effective freshwater production, especially in resource-poor regions.
Innovation Solution
A multi-stage vaporization and condensation system utilizing counter-circulating heat exchange processes and high-efficiency heat exchange devices to amplify low-intensity thermal energy, such as solar energy, for enhanced production yield and energy use efficiency in thermal desalination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional thermal desalination technologies (MSF, MED) are used, then freshwater production is achieved, but energy consumption is excessive and thermal energy is not fully utilized
Solution Approach 1:
The patent implements continuous circulation of brine liquid through multiple vaporization stages, where thermal energy is repeatedly utilized. The brine liquid circulates continuously, absorbing thermal energy at each stage and releasing latent heat during condensation, maintaining continuous useful action throughout the system rather than batch processing.
Solution Approach 2:
The patent recovers thermal energy that would otherwise be discarded. The condensed water vapor releases latent heat which is captured and used to pre-heat incoming brine liquid or maintain temperature in subsequent stages, converting waste thermal energy into useful heating capacity.
2Loss of energy
If solar energy is used for desalination, then environmental sustainability is improved, but production yield is very low due to low intensity solar energy
Solution Approach 1:
The patent divides the desalination process into multiple sequential stages, each operating at different temperature levels. This segmentation allows progressive utilization of thermal energy, with each stage contributing to overall freshwater production, thereby amplifying the effect of low-intensity solar energy input.
Solution Approach 2:
The patent adds temporal dimension to energy utilization by implementing counter-circulating flow patterns and multi-stage processing. Thermal energy is not just used once but is circulated and reused across multiple stages over time, effectively amplifying the energy input in the time dimension.
3Productivity
If thermal energy is used to vaporize and condense water, then freshwater is produced, but a substantial portion of thermal energy is discarded
Solution Approach 1:
The patent implements feedback loops where condensed water vapor returns thermal energy to the system through heat exchange with incoming brine liquid. This feedback mechanism ensures that thermal energy is not lost but is continuously recycled back into the vaporization process.
Solution Approach 2:
The patent merges the vaporization and condensation processes into an integrated counter-circulating system. The condensation process is spatially and temporally coordinated with vaporization, allowing thermal energy transfer between the two processes to occur efficiently within the same system framework.
4Loss of energy
If multi-stage flash distillation or multi-effect distillation is used, then thermal energy re-use is improved, but production yield is still limited
Solution Approach 1:
The patent implements dynamic counter-circulating flow patterns where brine liquid and water vapor move in opposite directions through the stages. This dynamic arrangement optimizes temperature gradients and heat transfer efficiency at each stage, enhancing both thermal energy re-use and production yield simultaneously.
Solution Approach 2:
The patent uses brine liquid as an intermediary medium that facilitates thermal energy transfer between stages. The brine liquid absorbs thermal energy in vaporization stages and releases it in condensation stages, acting as a mobile heat transfer intermediary that connects different parts of the system.
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 significantly increases freshwater production yield while reducing energy costs and environmental impact, making it a viable, sustainable solution for large-scale desalination and broader industrial applications.
Implementation Method 1
vaporization of original liquid to produce distilled liquid. If the boiling temperatures of the original liquid components are sufficiently different, liquid vapor generated will be distilled
Implementation Method 2
Evaporated vapor is then condensed into separate liquid
Implementation Method 3
counter-circulating heat exchange processes and high-efficiency heat exchange devices to amplify low-intensity thermal energy
Implementation Method 4
thermal energy re-use is quite limited. A substantial portion of thermal energy enters into the system is discarded
Data Source
AI summary
A liquid desalination, distillation, disinfection, purification, or concentration system by repeatedly re-using thermal energy is provided. Thermal heat source can be solar, fossil fuel, or low grade heat discharged from industrial systems. Multiple thermally insulated and isolated stages of vaporization-condensation chambers can be connected to enhance production yield. Vapor is generated by direct heating of liquid and flash evaporation. Vapor generated is condensed in condenser cooled by intake liquid. Counter circulating intake liquid will be heated by released latent heat from vapor. Externally provided thermal energy will accumulate and be re-used in the system. Vaporization and condensation process will be continuously re-cycled to enhance production yield. The system can be configured to support flexible deployment in various configurations and in different locations, including direct floating installation on water surface.