Solar Irrigation Pumping With Elevated Water Storage for Off-Grid Reliability
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Solution Overview
Problem
Modern irrigation systems face high power demands for pumping water, which are costly when relying on the electrical grid and polluting when using fossil-fueled engines, and solar power systems are limited by power generation capacity, weather dependence, and nighttime non-operation.
Innovation Solution
A solar power system integrated with a mechanized irrigation system that includes solar panels, a charge controller for maximum power point tracking, battery storage, and an inverter to convert DC to AC, utilizing stored pressurized water for irrigation and generating electricity via a water turbine, with a system controller managing power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If solar power is used to power irrigation systems, then operational costs are reduced and environmental pollution is decreased, but power generation capacity is limited and reliability is reduced due to weather dependence and nighttime non-operation
Solution Approach 1:
The system performs preliminary action by using solar panels to pump water into an elevated storage tank during daytime when solar power is available. This stored pressurized water is then used during nighttime or cloudy periods when solar power is unavailable, ensuring continuous irrigation operation and improving reliability without compromising environmental benefits.
Solution Approach 2:
The elevated storage tank acts as an intermediary between solar power generation and irrigation usage. It stores pressurized water during periods of high solar generation and releases it during periods of low or no generation, mediating the mismatch between intermittent solar power availability and continuous irrigation demands.
2Adaptability or versatility
If solar panels are used to generate power for irrigation, then dependency on external power sources is reduced, but the power generation capacity is insufficient for high-demand irrigation operations
Solution Approach 1:
The system uses hydraulic principles by utilizing an elevated storage tank to create water pressure through gravity. This hydraulic pressure is sufficient to power irrigation operations without requiring additional large-capacity solar panels, thereby maintaining off-grid capability while meeting power demands through efficient hydraulic energy conversion.
Solution Approach 2:
The system performs preliminary power generation and water storage during daytime when solar power is available, building up sufficient water pressure in the elevated tank before nighttime irrigation operations. This preliminary action allows the limited solar capacity to support higher overall power demands through temporal load shifting.
3Quantity of substance
If conventional solar power systems are used for irrigation, then initial investment costs are high, but power generation is insufficient during high-demand periods and nighttime
Solution Approach 1:
The elevated storage tank serves multiple functions: it stores water for irrigation, generates hydraulic pressure to reduce pump power requirements, and acts as a buffer for load balancing between solar generation and irrigation demands. This multi-functionality reduces the need for additional specialized equipment, thereby reducing overall system complexity while maximizing water storage utility.
Solution Approach 2:
The system replaces high-capacity electrical pumps with a gravity-based hydraulic system using an elevated storage tank. This mechanical substitution reduces the need for additional solar panels and complex power management systems, thereby reducing device complexity while providing sufficient power during high-demand periods through potential energy conversion.
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
Enables off-grid operation of irrigation systems using solar power, optimizing energy use and reducing reliance on external power sources, while providing reliable and efficient water supply and pressure for irrigation.
Implementation Method 1
solar panels which produce DC current
Implementation Method 2
generating electricity via a water turbine
Implementation Method 3
an inverter to convert DC to AC
Data Source
AI summary
The present invention provides a solar power system for use with a mechanized irrigation system. According to a first preferred embodiment, the solar power system of the present includes solar panels which produce DC current which is used to power the irrigation system and to store water in an elevated storage tank. The systems of the present invention selectively use the water stored in the elevated storage tank to provide water pressure to the irrigation system. According to a further preferred embodiment, the system of the present invention preferably converts the power from the solar panels to AC current and uses AC current to power the movement of the irrigation system and other sub-systems.