High Temperature Heat Exchange Unit with Overflow Pipes
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Solution Overview
Problem
Existing high temperature heat storage devices suffer from low heat exchange efficiency due to intermittent and low-flow molten salt circulation, high flow resistance from solid iron-based heat storage materials, and inefficient heat transfer, leading to environmental pollution, high operation costs, and inadequate heat storage/release capacity.
Innovation Solution
A high temperature heat exchange and heat storage unit with a housing containing solid heat storage particles, featuring a fluid inlet, multiple fluid outlets, overflow ports, and overflow pipes, which allows for efficient circulation and heat exchange of a high temperature heat transfer fluid, reducing flow resistance and enhancing heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nitrogen is used to intermittently drive molten salt circulation, then heat storage device can operate, but heat exchange efficiency is low and operation cost increases
Solution Approach 1:
The heat storage device uses the heat energy stored within the solid heat storage material to drive the circulation of molten salt, eliminating the need for external nitrogen driving. The system serves itself by utilizing its own stored energy to maintain operation, thereby reducing operation costs and improving heat exchange efficiency.
Solution Approach 2:
The patent implements continuous circulation of molten salt through the heat storage device by utilizing the stored heat energy to maintain constant flow, replacing the intermittent nitrogen-driven circulation. This continuous action significantly improves heat exchange efficiency between the molten salt and solid heat storage material.
2Quantity of substance
If solid iron-based heat storage material in powder form is used, then heat storage capacity is achieved, but flow resistance of molten salt becomes high
Solution Approach 1:
The patent changes the physical parameters of the solid heat storage material by controlling particle size distribution and shape characteristics. By optimizing these parameters, the material maintains high heat storage capacity while reducing flow resistance to molten salt circulation, achieving a balance between storage capacity and fluid flow efficiency.
3Loss of energy
If molten salt flow rate is too low, then flow resistance is reduced, but heat exchange capacity becomes insufficient
Solution Approach 1:
The patent optimizes the flow rate parameter of molten salt to achieve the best heat exchange performance. By carefully controlling the flow rate within an optimal range, the system maintains sufficient heat exchange capacity while keeping flow resistance at acceptable levels, resolving the contradiction between these two parameters.
4Productivity
If uneven distribution of flow resistance occurs in molten salt flow range, then some regions experience standstill, but heat exchange fails
Solution Approach 1:
The patent applies local quality optimization by ensuring uniform distribution of solid heat storage material particles and designing the flow channel structure to achieve even flow resistance distribution throughout the molten salt flow range. This prevents localized standstill and ensures stable, uniform heat storage and release capacity across the entire device.
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 achieves high heat exchange efficiency, reduces operational costs, minimizes environmental impact, and enhances the heat storage and release capacity, making it suitable for improving load adjustment capabilities in thermal power plants and integrating with new energy sources.
Implementation Method 1
a high temperature heat exchange and heat storage unit with a housing containing a plurality of solid heat storage particles
Implementation Method 2
exchanges heat with the solid heat storage particles filled in the housing
Implementation Method 3
each overflow pipe communicates with one corresponding overflow port and one corresponding fluid outlet of the housing
Data Source
AI summary
The present invention relates to a high temperature heat exchange and heat storage unit, and mechanism and device thereof. The high temperature heat exchange and heat storage unit comprises a housing containing a plurality of solid heat storage particles. The housing has a fluid inlet on the top of the housing, and has a plurality of fluid outlets on the bottom of the housing; a plurality of overflow ports, a plurality of overflow pipes, and a heat exchange pipe is disposed inside the housing; each overflow pipe communicates with one corresponding overflow port and one corresponding fluid outlet of the housing, and a highest point of each overflow pipe is lower than the top of the housing. No sealing structure needs to be disposed at the fluid inlet of the housing, so that the high temperature heat exchange and heat storage unit is simple in structure. It is also very convenient and flexible to assemble, and the assembly requirements of high temperature heat exchange and heat storage mechanism of various different specifications can be satisfied.