Heat storage device, heat storage system and method for operating a heat storage device

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Solution Overview

Problem

Existing heat storage devices have a heat storage capacity that leaves room for improvement, with efficiency being a key area for enhancement.

Innovation Solution

A heat storage device comprising a storage container with a support matrix for heating elements, heat storing means, and a gas flow system that includes a heating element for heating and storing gas, and a method for introducing and withdrawing heat using a gas flow through openings, with features such as flow homogenizers and honeycomb structures to enhance efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If a heating element is added to the storage container, then heat storage capacity and efficiency are improved, but device complexity increases

Engineering Contradiction:
Improveheat storage capacityVSAvoiddevice complexity
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The heating element is integrated directly into the storage container, merging the heating function with the storage structure. This combination allows the heating element to be supported by the container walls or integrated mounting structures, eliminating the need for separate external heating devices and complex mounting mechanisms, thereby improving heat storage capacity while minimizing additional complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The storage container serves multiple functions: it stores thermal energy, provides structural support for the heating element, and acts as a reaction mass for thermal management. This multi-functionality improves overall system efficiency by using the same structure for multiple purposes, adding heating capability without proportionally increasing device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If multiple heating elements are positioned at defined distances, then heat distribution uniformity is improved, but device complexity increases

Engineering Contradiction:
Improveheat distribution uniformityVSAvoiddevice complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The heating system is divided into multiple discrete heating elements positioned at specific intervals within the storage container. This segmentation allows each heating element to independently contribute to heat distribution, creating more uniform thermal fields throughout the storage medium while maintaining a modular structure that limits overall complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Heating elements are positioned at specifically defined distances from each other and from the storage medium based on thermal analysis. This local optimization ensures that heat is distributed uniformly across different regions of the storage container, with each heating element's position carefully selected to achieve optimal thermal coverage without requiring excessive numbers of elements

Inventive Principle:
Principle #3Local quality

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 device efficiently stores and releases thermal energy, stabilizing electrical grids by utilizing excess electrical energy from fluctuating sources, and minimizing electrical energy consumption and thermal inertia.

Implementation Method 1

a heating element (7) for heating the gas

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

storing means (11), which are disposed downstream of the heating element (7), for storing heat of the heated gas

Methodology Applied
Scientific EffectThermal energy storage: Thermal Energy Storage

Data Source

PatentUS12560389B2Heat storage device, heat storage system and method for operating a heat storage device
Publication Date: 2026.02.24 KRAFTANLAGEN ENERGIES & SERVICES SE
  • US12560389B2 patent drawing
  • US12560389B2 patent drawing
  • US12560389B2 patent drawing

AI summary

A heat storage device, a heat storage system comprising at least one heat storage device, and a method for operating a heat storage device.