Heat-Driven Pumping System Using Vapor Pressure for Autonomous Operation
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Solution Overview
Problem
Existing pumping systems rely on electricity and are not autonomous, limiting their ability to pump liquids against gravity without an external energy source, especially in renewable energy contexts.
Innovation Solution
A heat-driven pumping system with a closed circuit that vaporizes a first liquid using an external heat source, increasing gas pressure to transfer a pumping force to a second liquid through a sealed system, allowing for autonomous pumping without electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If electricity is used to drive pumps, then pumping performance is reliable, but autonomy and applicability in remote areas deteriorates
Solution Approach 1:
The pump system uses solar energy to heat water directly, creating vapor pressure that automatically drives the pumping mechanism without external control or electrical input. The system serves itself by converting solar energy directly into mechanical pumping action through thermal expansion and phase change of water
Solution Approach 2:
The patent replaces electrical motors and mechanical drive systems with a thermally-driven mechanism where solar-heated water vapor generates pressure to move the pump components. This substitution eliminates the need for electricity while maintaining pumping capability through thermal-mechanical conversion
2Force
If conventional pumps are used, then pumping against gravity is achieved, but dependence on external energy sources worsens
Solution Approach 1:
The system changes the state of water from liquid to vapor through solar heating, utilizing the phase change and associated volume expansion to generate pumping force. This parameter change (temperature and phase) converts solar energy directly into mechanical work for pumping against gravity
Solution Approach 2:
The patent exploits the phase transition of water from liquid to vapor when heated by solar energy. The vaporization process generates high pressure that drives the pumping mechanism, converting thermal energy into mechanical pumping force without electrical input
3Extent of automation
If heat-driven pumping is implemented, then autonomy and renewable energy use improve, but system complexity increases
Solution Approach 1:
The patent merges the heating function and pumping function into a single integrated system. The solar collector also serves as the heating chamber, and the vaporization process directly drives the pump mechanism, eliminating separate components and reducing overall system complexity despite the novel operating principle
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 efficient and autonomous pumping of liquids against gravity using renewable heat sources, such as solar radiation, with improved flow rates and system efficiency due to positive pressure operation, and the ability to handle contaminated or gritty liquids.
Implementation Method 1
The vaporization portion is configured to cause vaporization of first liquid within the vaporization portion. Vaporization of first liquid within the vaporization portion thereby increases an amount of gas in the closed circuit.
Implementation Method 2
The closed circuit is sealed such that the increase in the amount of gas increases a pressure exerted on the first liquid.
Implementation Method 3
The transfer means is configured to convert the pressure exerted on the first liquid into a pumping force. The pumping force is transferred to a pumping vessel for pumping a second liquid.
Data Source
AI summary
According to examples of the disclosure there is provided a heat-driven pumping system and a method of pumping. The heat-driven pumping system comprises a closed circuit for a first liquid. The closed circuit comprises a vaporization portion. The vaporization portion is configured to receive heat from an external source. The vaporization portion is configured to cause vaporization of first liquid within the vaporization portion. Vaporization of first liquid within the vaporization portion thereby increases an amount of gas in the closed circuit. The closed circuit is sealed such that the increase in the amount of gas increases a pressure exerted on the first liquid. The heat-driven pumping system comprises a transfer means. The transfer means is configured to convert the pressure exerted on the first liquid into a pumping force. The pumping force is transferred to a pumping vessel for pumping a second liquid.