Thermochemical Heat Storage Screw Conveyor with Integrated Heating
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Solution Overview
Problem
Existing methods for charging and discharging thermochemical heat storage media are inefficient, often requiring extensive equipment and taking a long time to fully charge or discharge the medium.
Innovation Solution
The method involves using mechanical screw conveyors to transfer the heat storage medium between two storage containers, with electrical heating during transport to separate the reaction medium and simultaneous heat flow management, eliminating the need for separate reaction chambers and allowing for flexible operation in both loading and unloading modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If heat storage medium is conveyed back and forth between two storage containers using a single line, then the process can only run in one direction (either loading or unloading), but this limits operational flexibility and productivity
Solution Approach 1:
The single conveying line is divided into two separate conveying lines: a first conveying line for loading the heat storage medium and a second conveying line for unloading it. This segmentation allows simultaneous operation of loading and unloading processes, eliminating the directional limitation while maintaining operational flexibility.
Solution Approach 2:
The system is designed to dynamically switch between loading and unloading modes by controlling the direction of heat flow and the operation of heating/cooling devices on each conveying line independently, enabling flexible adaptation to different operational requirements.
2Reliability
If separate reaction chambers and additional equipment are used for loading and unloading processes, then the reaction medium can be properly managed, but the device complexity and equipment outlay increase significantly
Solution Approach 1:
The conveying lines are designed to serve dual purposes: they convey the heat storage medium while also functioning as reaction chambers where the thermochemical reactions occur. The heating devices on the conveying lines provide the necessary heat for the reaction, eliminating the need for separate reaction chambers and reducing equipment complexity.
Solution Approach 2:
The conveying lines are designed as multi-functional components that simultaneously perform material transport and thermal processing functions. The heating/cooling devices integrated into the conveying lines enable them to serve both as conveyors and as thermal reaction zones, reducing the overall equipment count.
3Reliability
If conventional heat exchanger tubes are used for heat transfer, then the heat transfer process is reliable, but the process becomes sluggish and takes a long time to fully charge or discharge the heat storage medium
Solution Approach 1:
The conventional passive heat exchanger tube system is replaced with an active heating/cooling device system integrated into the conveying lines. This allows direct and rapid heat transfer to and from the heat storage medium during conveyance, dramatically accelerating the charging and discharging rates while maintaining reliable heat transfer through controlled thermal exchange.
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 significantly accelerates the loading and unloading process, reduces equipment complexity, and allows for flexible operation, enabling efficient and rapid heat transfer without the need for additional processing steps or equipment.
Implementation Method 1
supplying the heat flow by means of an electrical heating device with simultaneous complete removing the reaction medium from the now loaded heat storage medium
Implementation Method 2
the reaction medium released during loading is fed to the heat storage medium and a heat flow released in the process is removed from the heat storage medium
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a method for charging and discharging a thermochemical heat storage medium, wherein, during charging of the heat storage medium (5), a heat flow (Q1) is transferred to the heat storage medium (5), thereby releasing a reaction medium from the heat storage medium (5), and wherein, during discharging of the heat storage medium (5), the reaction medium released during charging is fed back to the heat storage medium (5), and a heat flow (Q2) released in the process is discharged from the heat storage medium (5). A method of the type mentioned above, in which the charging and discharging of the heat storage medium (5) is carried out quickly and efficiently, is characterized according to the invention by the following process steps: - providing the discharged heat storage medium (5) in a first storage container (3);- Conveying the discharged heat storage medium (5) along a first conveying section (6) from the first storage container (3) to a second storage container (4) and - Charging the discharged heat storage medium (5) along the first conveying section (6) by supplying the heat flow (Q1) by means of an electric heating device (10) while simultaneously completely removing the reaction medium from the now charged heat storage medium (5); - Filling the second storage container (4) with the heat storage medium (5) charged along the first conveying section (6); - Conveying the loaded heat storage medium (5) along a second conveying section (7) from the second storage container (4) back to the first storage container (3) and - Unloading the loaded heat storage medium (5) along the second conveying section (7) by supplying the reaction medium removed during loading while simultaneously releasing and dissipating the heat flow (Q2) by means of a heat transfer medium;- Filling the first storage container (3) with the heat storage medium (5) discharged along the second conveying section (7).;