Heating device, heating system, heat storage device and heat storage system
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Solution Overview
Problem
Existing heat storage devices for gas streams have inefficiencies in heating and unloading processes, with high material temperatures and low heating output, which do not meet the demands for efficient thermal energy storage and utilization.
Innovation Solution
A heating system comprising multiple heating plate units with conductive spacer structures, allowing for parallel electrical connection and a large surface area for heat transfer, with corrugated and flat heating plate strips forming a honeycomb structure to facilitate high flow velocities and low flow resistance, and a ceramic insulating partition for efficient heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If heating plate strips are arranged in parallel with large surface area, then heating output is improved, but material temperature increases
Solution Approach 1:
The heating device is segmented into multiple heating plate strips arranged in parallel, each contributing to the total heating output. This segmentation allows the heat distribution to be spread across multiple elements, preventing excessive temperature concentration in a single material region while maintaining high overall heating power.
2Productivity
If heating plate strips are arranged perpendicular to gas flow, then heating efficiency is improved, but flow resistance increases
Solution Approach 1:
The heating plate strips are arranged in a dimension parallel to the gas flow direction rather than perpendicular to it. This dimensional change allows the gas to flow along the heating plates, maintaining high flow velocities while still achieving efficient heat transfer over an extended surface area.
3Power
If conductive spacer structure is used to connect heating strips, then electrical connection is improved, but thermal insulation performance deteriorates
Solution Approach 1:
The connection structure is segmented into discrete conductive spacers positioned only at the end regions of heating plate strips rather than along the entire length. This segmentation provides electrical connection where needed while minimizing the thermal conduction paths that would otherwise cause energy losses along the heating strip connections.
4Speed
If corrugated heating plate strips are used to form honeycomb structure, then flow resistance is reduced, but manufacturing complexity increases
Solution Approach 1:
The heating plate strips incorporate corrugations (wave-like curvatures) that form a honeycomb structure when assembled. This curvature design reduces flow resistance by creating streamlined pathways for gas flow, while the corrugated shape can be manufactured using standard forming techniques, balancing flow performance with manufacturing feasibility.
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 system achieves low material temperatures during operation while providing high heating output, enabling efficient thermal energy storage and release, suitable for stabilizing power grids with fluctuating renewable energy sources.
Implementation Method 1
adjacent heating plate strips in the first end regions and the second end regions are each connected to one another via a conductive spacer structure
Implementation Method 2
The heating plate strips of the heating plate package are electrically connected in parallel
Implementation Method 3
which comprises a plurality of heating plate strips which lie in the gas stream
Implementation Method 4
the structured heating plate strips are, in particular, corrugated and, together with the flat heating plate strips, form a kind of honeycomb structure through which the gas flow can flow
Implementation Method 5
a ceramic insulating partition for efficient heat distribution
Implementation Method 6
two electrical connection elements for connection to a power source
Data Source
Figure 1
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AI summary
A heating system for a gas flow is proposed, comprising an inlet side and an outlet side and a heating arrangement (20) comprising at least one heating unit (28) which includes a heating device (34) with a flow surface oriented perpendicular to the gas flow, and at least one bearing element (33) on which the heating device (34) is arranged and which is permeable to the gas flow, such that the flow surface of the heating device (34) is exposed to the gas flow or the gas flow can flow from the heating device (34) through the bearing element (33). The bearing element (33) comprises a shaped block in which the flow channels leading to the heating device (34) are formed, or the bearing element is made of ceramic rods, a plate, or a perforated plate.