Solar-Powered Borehole Pump with Reciprocating Plunger
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Solution Overview
Problem
Conventional borehole pumps are inefficient in pumping water from shallow aquifers, particularly in terms of flow rate and energy consumption, and lack effective mechanisms for utilizing renewable energy sources like solar power.
Innovation Solution
A double-action reciprocating pump system with a tubular encapsulation and internal motor, utilizing solar energy harvesting and energy storage to power the plunger's reciprocal motion, with valve configurations for efficient fluid communication and a controller to optimize energy use, allowing for double-action pumping and increased flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional borehole pumps are used, then the pump can operate in shallow aquifers, but the flow rate is low and energy consumption is high
Solution Approach 1:
The pump employs a reciprocating plunger that alternates between upward and downward strokes to pump water. During the upward stroke, the plunger displaces water through the discharge valve, and during the downward stroke, it draws water in through the suction valve. This periodic reciprocating motion enables continuous water delivery while maintaining efficiency in shallow aquifer conditions, achieving over 2 cubic meters per hour flow rate
Solution Approach 2:
The double-action pump design ensures that water is pumped during both the upward and downward strokes of the plunger, maximizing the utilization of each motion cycle. The suction and discharge valves are strategically positioned to enable continuous water flow without idle periods, thereby increasing productivity while reducing overall energy consumption compared to single-action pumps
2Adaptability or versatility
If solar energy is utilized to power the pump, then renewable energy is harnessed, but the system complexity increases
Solution Approach 1:
The pump system integrates solar panels, energy storage battery, motor, and pump mechanism into a unified subsystem that fits within the borehole. The solar panels convert sunlight to electrical energy, which is stored in the battery and then used to drive the motor that powers the reciprocating plunger. This merged design harnesses renewable solar energy while maintaining a compact, integrated structure rather than separate distributed components
Solution Approach 2:
The pump system employs a nested configuration where the plunger and valves are housed within the borehole structure, and the solar energy subsystem (panels, battery, motor) is integrated within the same spatial envelope. This nesting approach reduces overall system complexity by eliminating the need for external mounting structures and interconnections, while still enabling effective solar energy utilization
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 a flow rate of over 2 cubic meters per hour at a 30-meter pump head, efficiently utilizing solar energy and reducing energy consumption by optimizing the plunger's motion and valve operation.
Implementation Method 1
utilizing solar energy harvesting and energy storage to power the plunger's reciprocal motion
Implementation Method 2
a plunger, reciprocally movable within the suction cavity along an axis
Implementation Method 3
an inlet port controlled by an inlet port valve, a connection port controlled by a connection port valve
Data Source
AI summary
A pump system for pumping liquid from a well into a pipe is disclosed. The pump system comprises: a suction cavity in fluid communication with the well via an inlet port controlled by an inlet port valve, a plunger, reciprocally movable within the suction cavity, and a delivery conduit. The delivery conduit is in fluid communication with the pipe via an outlet port, and with the suction cavity via a connection port controlled by a connection port valve. The pump system also comprises a tubular encapsulation, encapsulating the suction cavity, the plunger, the delivery conduit and the valves.