Heat-Activated Multiphase Pump Using Vapor-Driven Liquid Piston
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Solution Overview
Problem
Current fluid pumping technologies, especially those relying on heat energy, face challenges such as inefficiency, bulkiness, high maintenance costs, and limited ability to handle varying pumping loads or heat inputs, making them unsuitable for applications where cost, infrastructure, or reliability are concerns.
Innovation Solution
A heat-activated multiphase fluid-operated pump (HAMFOP) system that utilizes a hot chamber to convert a working fluid into vapor, which displaces the fluid to be pumped through a series of interconnected valves and chambers, allowing for efficient fluid movement and recirculation using heat energy as input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrical pumps are used, then pumping efficiency is improved, but cost and infrastructure requirements increase
Solution Approach 1:
The patent replaces electrical pumps with a thermally-driven multiphase fluid system that converts heat energy directly into pumping action through phase change and fluid expansion, eliminating the need for electrical motors and power infrastructure
Solution Approach 2:
The invention utilizes phase transitions of the multiphase fluid (liquid to vapor to liquid) to generate pressure differentials that drive the pumping action, converting thermal energy into mechanical work without electrical components
2Power
If solid piston or diaphragm pumps are used, then pumping power is improved, but device complexity and maintenance costs increase
Solution Approach 1:
The patent removes solid moving parts (pistons, diaphragms, valves, seals) from the pumping system, retaining only the essential fluid chambers and interconnections, thereby simplifying the device while maintaining pumping capability
Solution Approach 2:
The invention uses fluid pressure and phase change dynamics to perform the pumping function that would traditionally require solid mechanical components, replacing complex mechanical systems with simpler fluid-based mechanisms
3Device complexity
If fluid-driven pumps are used, then device complexity is reduced, but pumping efficiency decreases
Solution Approach 1:
The patent enhances simple fluid-driven pumping by incorporating phase transitions of the working fluid, which generate significant pressure differentials and improve pumping efficiency without adding mechanical complexity
Solution Approach 2:
The invention changes the physical parameters of the working fluid (temperature, pressure, phase state) to optimize pumping performance, allowing efficient fluid movement through thermal control rather than mechanical work
4Volume of moving object
If heat pipe or thermosyphon systems are used, then compactness is improved, but flow rate decreases
Solution Approach 1:
The patent introduces dynamic control of the multiphase fluid system through adjustable thermal inputs and outlet restrictions, enabling the system to adapt flow rates to match varying pumping demands while maintaining compact dimensions
Solution Approach 2:
The invention utilizes periodic phase change cycles (evaporation-condensation-Expansion) of the multiphase fluid to generate pulsating flow that can be summed to achieve higher average flow rates than continuous passive systems
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 HAMFOP system provides a simple, low-cost, and long-lasting solution for fluid pumping, effectively converting heat into useful work while being compact and easy to install, suitable for applications where traditional pumps are not feasible.
Implementation Method 1
a hot chamber or evaporator that is designed to utilize heat to convert a working fluid into vapor
Implementation Method 2
A hot chamber or evaporator that is designed to utilize heat to convert a working fluid into vapor
Implementation Method 3
a condenser that converts the vapor back into liquid form
Data Source
AI summary
A heat-activated multiphase fluid-operated pump. A hot chamber receptive of externally applied heat converts a working fluid into vapor. A pressure-control valve allows vaporized working fluid to escape the hot chamber only when a target pressure is exceeded. A liquid-piston chamber receives the vaporized working fluid, which expands adiabatically to displace pumped liquid within the liquid-piston chamber in a pump stage, expelling it through an exit port having a unidirectional check valve. A condenser receives the displaced liquid and allowing it in a suction stage to return to the liquid-piston chamber through another unidirectional check valve. An injector valve coupled between the liquid-piston chamber and the hot chamber facilitates jets of condensed working fluid to replenish the hot chamber in successive brief spurts responsive to periodic pressure pulses in the liquid-piston chamber that temporarily exceed the pressure in the hot chamber.