Vertical Solar Distillation Reactor with Concentrate Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing water desalination and purification technologies are limited by complexity, cost, and inefficiency, particularly in continuous operation and scalability, and often suffer from mineral buildup and reduced thermal efficiency.
Innovation Solution
A vertically oriented, tubular solar evaporation reactor with a metal outer tube and inner tube configuration, using a tension member to create a watertight seal, and a solar reflector to direct radiation, allowing for continuous operation and efficient separation of feed liquid and concentrate without moving parts or membranes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional solar distillation systems are used, then water purification can be achieved, but the devices are limited by size and thermal efficiency
Solution Approach 1:
The solar distillation system is divided into separate functional modules: an evaporation chamber containing water to be purified, a condensation chamber for steam condensation, and a collection chamber for purified water. This segmentation allows each chamber to be optimized for its specific function, improving overall thermal efficiency while maintaining reliable water purification.
Solution Approach 2:
The patent transitions from traditional horizontal or simple vertical solar still designs to a multi-chamber vertical configuration with distinct functional zones. This dimensional reorganization allows for improved heat transfer paths and thermal efficiency while maintaining the portability and simplicity needed for reliable operation in resource-limited settings.
2Productivity
If tube-based solar evaporation systems are used, then continuous operation is possible, but mineral buildup occurs in the evaporation tubes
Solution Approach 1:
The harmful effect of mineral buildup is eliminated by extracting the evaporation process from enclosed tubes and transferring it to an open evaporation chamber. Water evaporates from the chamber surface where minerals remain behind, preventing tube blockage while maintaining continuous operation capability. The condensed steam is collected separately, ensuring continuous productivity without mineral accumulation in conduction paths.
Solution Approach 2:
An open evaporation chamber serves as an intermediary space between the water source and condensation system. This intermediate chamber allows continuous evaporation and steam generation without the mineral buildup problems of direct tube heating, enabling sustained productivity while preventing harmful scale accumulation in the heat transfer pathways.
3Ease of manufacture
If simple solar distillation designs are used, then ease of manufacture is improved, but device size and scalability are limited
Solution Approach 1:
The solar distillation device is segmented into modular chambers (evaporation, condensation, collection) that can be manufactured separately and assembled. This modular approach maintains manufacturing simplicity while allowing the device size to be scaled by adding or removing chambers, thus resolving the contradiction between ease of manufacture and device scalability.
Solution Approach 2:
The multi-chamber design creates a universal platform that can serve different purification needs by adjusting the number and configuration of chambers. The basic modular unit maintains ease of manufacture, while the system can be scaled up for larger capacity applications, providing versatility across different deployment scenarios without complicating the fundamental manufacturing 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 system achieves efficient desalination and purification using solar energy, maintaining a constant liquid level and regulating concentrate flow, reducing mineral buildup and enhancing thermal efficiency, while being scalable and cost-effective.
Implementation Method 1
A vertically oriented, tubular solar evaporation reactor... using a solar reflector to direct radiation
Implementation Method 2
using a solar reflector to direct radiation
Implementation Method 3
evaporation reactor adapted to provide a liquid concentrate region below a feed liquid region
Implementation Method 4
The steam vapor generated rises above the water surface and condenses on the inside cover of the reactor
Data Source
AI summary
A solar distillation apparatus utilizing a substantially vertical reactor assembly is disclosed. The reactor includes a tubular outer shell, a base, a cap, and a central tension member. The annular space between the outer tube and the central tension member forms the reactor chamber. Seawater or other feed liquid enters the reactor chamber through the base plate. Reflected or direct solar energy heats the feed liquid, generating low pressure vapor. The vapor exits the reactor through the cap structure or the base. The concentrate left behind settles by gravity to the bottom region of the reactor's liquid column. Extension tubes on the feed openings allow feed liquid to enter the liquid column above the concentrate layer and avoid excessive mixing of the feed liquid and the concentrate. The concentrate exits the reactor through one or more openings in the base.