Solar Still Condensate Collection Using Vertical Conduits
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Solution Overview
Problem
Current methods for obtaining potable water from impure sources, such as solar distillation, are limited by size constraints due to gravity issues with condensate collection, are energy-intensive, environmentally unfriendly, or costly, making them unsuitable for large-scale or remote use.
Innovation Solution
A container-based apparatus with a condensing system comprising multiple conduits or sheets angled for condensate collection, combined with a collection device and heat transfer system using oil or solar energy, allows for efficient and scalable production of potable water by preventing condensate from falling back into the impure water source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the collection surface area is increased in a solar still, then more purified water can be produced, but the condensate droplets become too heavy and fall back into the impure water source
Solution Approach 1:
The patent transitions from a two-dimensional slanted collection surface to a three-dimensional network of vertical conduits. This dimensional change allows condensate to collect inside protected conduits rather than on an exposed surface, preventing droplet coalescence and gravity-induced fallback while enabling scalable water production.
Solution Approach 2:
The collection surface is segmented into multiple discrete vertical conduits distributed throughout the still body. Each conduit acts as an independent collection element, distributing the total collection area across many small units rather than one large surface, thereby maintaining droplet integrity and collection efficiency at scale.
2Ease of manufacture
If traditional solar distillation is used, then purified water can be obtained, but the system is too costly and limited in size for large-scale operations
Solution Approach 1:
The vertical conduits serve multiple functions simultaneously: they act as condensation surfaces, collection channels, and protective enclosures for the condensate. This multi-functionality reduces the need for separate components, simplifying the overall system design and enabling scalable deployment from small to large operations.
Solution Approach 2:
The conduits are positioned within the still body such that the evaporation chamber is nested around the condensation and collection conduits. This nested arrangement maximizes space utilization and allows the system to be scaled by adjusting the number and distribution of conduits within the still structure.
3Quantity of substance
If reverse osmosis is used to produce pure water, then potable water can be obtained, but the process is energy-intensive and environmentally unfriendly
Solution Approach 1:
The system utilizes phase transitions of water (liquid to vapor during evaporation, vapor to liquid during condensation) driven by solar thermal energy. This natural phase change process requires minimal external energy input compared to reverse osmosis, which requires high-pressure pumps and significant electrical energy consumption.
Solution Approach 2:
The solar still system uses free solar radiation as the energy source, requiring no external power supply. The evaporation and condensation processes occur naturally through solar heating, making the system self-sufficient and environmentally friendly without requiring energy-intensive infrastructure.
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 apparatus enables the production of larger quantities of purified water while being environmentally friendly and cost-effective, suitable for both small and large-scale applications, particularly in remote areas.
Implementation Method 1
a heater device for heating the volume of impure water to produce gaseous water molecules
Implementation Method 2
a condensing system located inside the container for providing water condensate from the water molecules
Data Source
AI summary
Apparatus for obtaining potable water from an impure water source comprising a container having at least a first end wall, a second end wall, a first sidewall, a second sidewall and a top wall; a volume of the impure water; a heater device for heating the volume of impure water to produce gaseous water molecules; a condensing system located inside the container for providing water condensate from the water molecules; an outlet for providing a flow of potable water from the water condensate; and a collection device for collecting the water condensate and moving the water condensate towards the outlet.