Valved Regenerator Compression for Isochoric Heat Exchange

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Solution Overview

Problem

Existing Stirling engines face challenges in achieving true isochoric displacement heat transfer and thermal efficiency due to the blending of neo-isochoric, neo-isobaric, and neo-isothermal processes, leading to inefficiencies in heat exchange and thermal energy transfer.

Innovation Solution

Implementing a valved cell concept with synchronized volumes connected by valves to achieve true isochoric displacement heat transfer, using a valved regenerator to replace traditional counter-flow heat exchangers, and integrating a Rankine cycle for vaporization of working fluids to eliminate the need for mechanical compressors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If traditional counter-flow heat exchangers are used in Stirling engines, then heat exchange function is provided, but thermal efficiency is reduced due to neo-isochoric, neo-isobaric, and neo-isothermal process blending

Engineering Contradiction:

Improvethermal efficiencyVSAvoidheat exchange process complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent divides the heat exchange process into distinct isochoric (constant volume) and isobaric (constant pressure) phases using separate heat exchangers for each process. This segmentation allows true isochoric heat addition and removal, eliminating the blending of processes that causes thermal inefficiency in traditional Stirling engines.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a regenerator as an intermediary thermal storage device between the isochoric heat exchanger and the working fluid. The regenerator stores thermal energy during one phase of the cycle and releases it during another, enabling efficient heat transfer while maintaining true isochoric conditions and improving overall thermal efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stress or pressure

If mechanical compressors are used to pressurize working fluids, then compression function is achieved, but mechanical losses increase

Engineering Contradiction:

Improveworking fluid pressureVSAvoidmechanical losses

Core Design Contradiction:

Stress or pressureVSLoss of energy

Solution Approach 1:

The patent replaces mechanical compressors with a gasification system that uses thermal energy to convert liquid working fluid into pressurized vapor. By substituting mechanical compression with thermal gasification, the system eliminates the mechanical losses associated with compressors while achieving the necessary working fluid pressure for the heat engine cycle.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes the phase transition of the working fluid from liquid to vapor through gasification. This phase change occurs at constant temperature and pressure, naturally pressurizing the working fluid without requiring mechanical compression. The latent heat of vaporization provides the energy needed for this transition, replacing mechanical work with thermal energy.

Inventive Principle:

Principle #36Phase transitions

3Loss of energy

If synchronized volumes with valves are used to achieve true isochoric displacement, then heat transfer efficiency is improved, but device complexity increases

Engineering Contradiction:

Improveheat transfer efficiencyVSAvoidvalved cell system complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent segments the heat exchange system into multiple synchronized volumes, each equipped with valves to control fluid flow during specific phases of the cycle. This segmentation enables true isochoric displacement in each volume, improving heat transfer efficiency by eliminating process blending while maintaining manageable system complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs periodic valve operation to control the timing of fluid displacement between synchronized volumes. Valves open and close at specific intervals to achieve true isochoric conditions during heat addition and removal phases, coordinating the periodic action of multiple volumes to improve overall heat transfer efficiency while maintaining systematic control.

Inventive Principle:

Principle #19Periodic action

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

Enhances thermal efficiency by achieving isochoric heat input and removal phases, improving heat exchange efficiency, and reducing mechanical losses, thereby approaching the theoretical maximum thermal efficiency of a heat engine.

Implementation Method 1

achieving isochoric heat input and removal phases

Methodology Applied

Scientific EffectIsochoric heat transfer:

Implementation Method 2

integrating a Rankine cycle for vaporization of working fluids

Methodology Applied

Scientific EffectVaporization: Evaporation

Data Source

PatentUS20260028921A1Systems and methods for applying thermolysis and/or electrolysis gas compression to bland/ewing chemo-thermodynamic cycles

Publication Date: 2026.01.29 BLAND JOSEPH BARRETT

AI summary

A method includes using an isochoric displacement through a valved or ducted thermal regenerator to raise the pressure of a vaporized reactant or vaporized reactant constituent as a means to regeneratively capture waste exhaust heat from the product or product constituents of a previous endothermic dissociation of a previous charge of said reactant.