Thermally Conductive Pump Heat Engine Cycle
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Solution Overview
Problem
Conventional heat engines often waste energy during phase changes from high-enthalpy to low-enthalpy states and fail to capture work output during the reverse transition, leading to inefficiencies in energy conversion.
Innovation Solution
A fully-regenerative heat engine cycle utilizing a working medium that undergoes phase changes from liquid to vapor or vapor to liquid, capturing mechanical work by varying the volume and pressure within a controlled chamber, allowing latent heat to be converted into mechanical energy through a pump mechanism, such as positive-displacement pumps or gerotors, ensuring efficient energy capture at each phase transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional heat engines are used for phase change from high-enthalpy to low-enthalpy state, then the phase transition occurs, but the latent heat energy is wasted and work output is not captured
Solution Approach 1:
The patent converts the previously wasted latent heat energy during high- to low-enthalpy phase change into useful mechanical work by utilizing the volume change associated with the phase transition to drive a piston or expand a spring, thereby transforming the harmful energy loss into a beneficial work output
Solution Approach 2:
The patent specifically exploits the phase transition characteristics of the working medium (such as liquid to vapor or solid to liquid transitions) to generate mechanical work through volume expansion, capturing energy that would otherwise be lost during the phase change process
2Productivity
If work is captured during low- to high-enthalpy phase change, then energy efficiency improves, but the system complexity increases due to additional components
Solution Approach 1:
The patent merges the phase change process with mechanical work extraction in a single integrated chamber, combining what would traditionally be separate functions (phase change containment and work extraction) into one unified system, thereby reducing overall system complexity while maintaining high energy capture efficiency
Solution Approach 2:
The working chamber serves multiple functions simultaneously: it contains the working medium, facilitates phase change, and extracts mechanical work through piston movement or spring expansion, making the system more efficient without proportionally increasing complexity
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
This approach enhances energy capture efficiency by converting latent heat to mechanical work during phase changes, improving the overall energy conversion process compared to traditional systems.
Implementation Method 1
a working medium which undergoes a first phase change while absorbing latent heat of transformation, then undergoes a return phase change to complete the cycle
Implementation Method 2
converting the thermal energy contained in a uniform-temperature environment directly to mechanical or electrical energy
Implementation Method 3
Method and apparatus utilizing thermally conductive pumps for conversion of thermal energy to mechanical energy
Data Source
AI summary
A heat-driven engine having a first, thermally conductive, pump to which a working medium is admitted and within which the working medium subsequently absorbs its latent heat while undergoing a phase change from low to high enthalpy phase before being expelled from the first pump. Also, a restrictive cooling element accepts the working medium in its high enthalpy phase and allows it to release its latent heat and undergo a phase change from a liquid to a low enthalpy phase. A first and a second passage, through which the working medium traverses, connects the first pump and the cooling element. The second passage incorporates a thermally conductive element, placing the working medium in thermal contact with a heat source or sink. Also, a heat pump is in thermal contact with the first pump and the cooling element. Finally, a power transmission element links the first pump to the heat pump.