Subsurface Drip Hydrogel Irrigation Using Airborne Moisture
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Solution Overview
Problem
Existing irrigation methods using hydrogels are inefficient and costly, as hydrogels lose effectiveness over time and require significant effort and expense to maintain in soil, and there is a need for a more effective and cost-effective method to distribute hydrogels and absorb moisture from air.
Innovation Solution
A subsurface drip irrigation system is used to deliver hydrogels and air through separate or combined driplines, allowing hydrogels to absorb moisture from the air and supply it to plant roots, reducing the need for additional water delivery and extending the lifespan of hydrogels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogels are placed in soil to improve water delivery to root systems, then water retention and delivery to plants is improved, but hydrogels lose effectiveness over time requiring significant effort and expense to maintain
Solution Approach 1:
The system pre-delivers hydrogels to the soil through irrigation driplines before they become ineffective, ensuring continuous availability of functional hydrogels without manual intervention. This preliminary action maintains hydrogel effectiveness by automatically replenishing depleted hydrogels in the root zone.
Solution Approach 2:
The irrigation system automatically manages hydrogel distribution without requiring manual maintenance. The system self-regulates by delivering hydrogels through the existing irrigation infrastructure, eliminating the need for human effort to monitor and maintain hydrogel effectiveness in the soil.
2Reliability
If hydrogels are used to absorb and hold water in soil, then water delivery to plants is improved, but significant expense is required to maintain hydrogel performance
Solution Approach 1:
The irrigation system performs multiple functions: it delivers water to plants, distributes hydrogels to the soil, and replenishes depleted hydrogels all through the same infrastructure. This multi-functionality reduces overall system cost by eliminating the need for separate maintenance operations and utilizing existing irrigation components for hydrogel distribution.
Solution Approach 2:
The system continuously replenishes hydrogels that have been depleted or broken down in the soil, effectively recovering the hydrogel function without complete replacement. This approach reduces the quantity of new hydrogel material needed by recycling and replenishing what remains in the soil.
3Productivity
If traditional irrigation methods are used to deliver water to plants, then water can be supplied directly, but water usage is inefficient and does not extend hydrogel lifespan
Solution Approach 1:
The system uses air as an intermediary carrier to deliver moisture to hydrogels, which then transfer the water to plant roots. This indirect delivery mechanism through air absorption improves water usage efficiency by allowing hydrogels to actively draw and hold moisture, extending their functional lifespan compared to direct liquid irrigation.
Solution Approach 2:
The system utilizes phase transition of water from vapor in air to liquid in hydrogels through absorption. This phase change enables hydrogels to actively capture and retain moisture, improving water usage efficiency and extending hydrogel effectiveness duration compared to traditional liquid water delivery methods.
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 maintains hydrogel effectiveness by replenishing it through the irrigation system, reducing water usage, and extending its lifespan without additional capital costs, while providing moisture to plants via air absorption.
Implementation Method 1
hydrogels may be placed in the vicinity of a root system of the plants, crops, vegetation, trees, and/or other foliage (e.g., may be placed in the soil) to improve delivery of the water to the root system
Implementation Method 2
The three-dimensional network of hydrophilic polymers may swell when submerged in water due to their hydrophilic nature. That is, the three-dimensional network may hold a relatively large amount of water while maintaining structure
Implementation Method 3
delivering air to the hydrogel includes forcing air through the tubing
Implementation Method 4
Forcing the hydrogel through the first tubing may include pumping the hydrogel with a pump
Data Source
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AI summary
Provided is a method of delivering water to a root system of a crop, the method including causing the crop to be adjacent to, or in a region of, soil containing hydrogel, and delivering air to the hydrogel.