Gas Flow Enhancers for High-Temperature Heat Transport

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Solution Overview

Problem

Existing gas circulation systems for high-temperature heat transport, particularly those involving high-temperature fuel cells, face challenges with maintenance, wear, and efficiency due to the need for expensive and failure-prone moving parts, as well as issues with solids causing damage in the gas line.

Innovation Solution

Incorporating gas flow enhancers based on the Coandă and Venturi effects within the pipe system, which utilize pressurized impulse gas to accelerate the heat transfer medium without moving parts, reducing susceptibility to failure and maintenance needs, and enhancing heat transfer efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If high-temperature fans are used to maintain gas flow in the heat transport system, then the gas circulation is maintained, but the system becomes expensive and susceptible to wear and failure due to moving parts

Engineering Contradiction:
Improvegas flow velocityVSAvoidsystem reliability
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent replaces the mechanical fan system with a thermal-driven gas circulation system. Heat exchangers create temperature differences that naturally drive gas flow through the system, eliminating moving parts and mechanical components. This substitution of mechanical propulsion with thermal convection currents resolves the contradiction by maintaining gas flow velocity without relying on vulnerable mechanical fans.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system utilizes temperature parameter changes to drive gas circulation. By creating temperature gradients through heat exchangers, the system transforms thermal energy into kinetic energy of gas flow. This parameter-based approach replaces mechanical speed control with thermal field control, improving reliability while maintaining the necessary gas flow velocities for heat transport.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If moving parts are used in the gas circulation system, then gas flow can be maintained, but maintenance procedures become extensive and costs increase

Engineering Contradiction:
Improvegas flow controlVSAvoidmaintenance requirement
Core Design Contradiction:
Ease of operationVSEase of repair

Solution Approach 1:

The patent extracts and removes all moving parts from the gas circulation system. By eliminating fans, motors, and mechanical actuators, the system transforms from a mechanically-controlled flow system to a thermally-driven system. This extraction of problematic components directly addresses the maintenance issue while ease of operation is maintained through thermal control mechanisms.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system employs self-service principles where temperature differences automatically drive gas circulation without external mechanical intervention. The thermal fields themselves perform the work of moving gas through the system, eliminating the need for separate drive mechanisms and reducing maintenance requirements to minimal monitoring of thermal parameters.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If solids are present in the gas line, then the system can handle particulate matter, but damage to moving parts occurs

Engineering Contradiction:
Improvehandling capabilityVSAvoidcomponent durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

By replacing mechanical fans and moving parts with a thermal-driven circulation system, the patent eliminates components that would be damaged by solids. The gas flow is driven by temperature gradients rather than mechanical force, allowing solids to pass through the system without causing damage to propulsion components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The thermal field acts as an intermediary between the heat source and gas flow. Instead of direct mechanical contact between moving parts and gas (which would transmit solid particles to components), the thermal field mediates the energy transfer, allowing solids to remain suspended in the gas flow without causing mechanical damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution eliminates the need for moving parts, reduces maintenance, and increases efficiency by effectively propelling the heat transfer medium, allowing for reliable and cost-effective heat transport with reduced susceptibility to failure and improved heat transfer efficiency.

Implementation Method 1

one or more gas flow enhancers functioning according to the Coandă effect and/or the Venturi effect are provided in the pipe system in order to have an effect on the gas flow

Methodology Applied
Scientific EffectCoandă effect: Coanda Effect

Implementation Method 2

one or more gas flow enhancers functioning according to the Coandă effect and/or the Venturi effect are provided in the pipe system in order to have an effect on the gas flow

Methodology Applied
Scientific EffectVenturi effect: Venturi Effect

Implementation Method 3

Via the heat exchanger the heat from the heat source is absorbed and emitted to the heat transfer medium flowing therein

Methodology Applied
Scientific EffectHeat transfer: Convection

Data Source

PatentUS11329299B2Gas circulation system for transporting heat from a high temperature source
Publication Date: 2022.05.10 HELMHOLTZ ZENTRUM HEREON GMBH
  • US11329299B2 patent drawing

AI summary

The invention relates to a gas circulation system (1) for transporting heat from a high-temperature source (5) to a heat consumer (7), having a pipe system (2), through which a gaseous heat transfer medium flows, wherein part of the pipe system (2) is formed as a heat exchanger (4) following on from the high-temperature source (5), in which heat is transferred from the high-temperature source (5) into the heat transfer medium, and wherein part of the pipe system (2) is formed as a heat sink (6), in which the heat transferred to the heat transfer medium can be transferred to a heat consumer (7), or as a heat consumer. One or more gas flow enhancers (8) functioning according to the Coandă effect and/or the Venturi effect, which are supplied with pressurized impulse gas, are provided in the pipe system (2), in order to propel the heat transfer medium in the pipe system (2) in a flow direction (3).