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Product Details:
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1. Overview of solid thermal storage system
The solid thermal storage system is an efficient and environmentally friendly thermal energy storage and release technology. It uses the off-peak electricity price period to convert electrical energy into thermal energy and store it for release during peak hours or specific heat demand. This system is based on high-efficiency thermal storage materials such as metal oxides. Through precise control and efficient heat exchange, it is suitable for the heating needs of industry, commerce and public facilities.
2. Principle
Using valley electricity, electrical energy is converted into thermal energy and stored in thermal storage bodies such as metal oxides. The storage temperature can reach above 650℃.
When the load needs heat, the equipment can be controlled by the PLC program according to the preset program, the set temperature and heat supply, and the circulating high-temperature air provided by the automatic variable frequency fan exchanges heat with the load circulating water through the steam-water (water-water) heat exchanger, and the load water pump provides hot water to the terminal equipment.
3. Parameters
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No. |
System composition |
Functional Description |
Key Parameters |
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1 |
Electric heating elements |
Convert electrical energy into heat |
Power |
100-500 kW |
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Efficiency |
≧95% |
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2 |
Thermal storage |
Stores heat energy, storage temperature can reach over 650℃ |
Material |
Metal oxide |
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Heat storage density |
200-400 kWh/m³ |
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PLC control system |
Automatically controls heat output and temperature settings |
Control accuracy |
±1℃ |
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Response time |
<5 seconds |
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4 |
Heat Exchanger |
Heat exchange between high temperature air and water |
Heat exchange efficiency |
≧90% |
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Temperature resistance |
700℃ |
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5 |
Fan |
Provide circulating high temperature air |
Air volume |
5000-20000 m³/h |
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Noise |
<70dB |
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6 |
Load water pump |
Transfer hot water to terminal equipment |
Flow rate |
10-50 m³/h |
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Head |
20-50 m |
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4. System working principle
4.1.Thermal energy storage:
During the off-peak period of the power grid load, the system uses electric positive wires to convert electrical energy into thermal energy and stores it in the thermal storage body. The heat storage body is usually made of materials such as metal oxides, which have high specific heat capacity and high thermal conductivity. They can withstand high temperatures above 650°C and keep heat from being lost for a long time.
4.2. Heat release:
When the load needs heat, the system accurately adjusts the heat output by the PLC control module according to the preset program. The heat energy in the heat storage body is transferred to the air-water heat exchanger through the high-temperature circulating air provided by the fan to complete the conversion of heat energy into circulating water. Subsequently, the circulating water is transported to the terminal equipment at the user end, such as heating pipe network, industrial heating equipment, etc., through the load water pump.
4.3. Automatic control:
The system adopts PLC intelligent control, real-time monitoring of the operating status, and dynamically adjusts the output heat and heating temperature according to the preset parameters and load requirements to ensure that user needs are met efficiently and safely.
5. Technical features
5.1. Efficient heat storage:
Metal oxide heat storage materials have high heat storage density and heat storage efficiency of more than 95%.
The system can quickly respond to heat demand and achieve efficient release of heat energy.
5.2. Precision control:
PLC control module has high-precision adjustment function, and the control temperature accuracy can reach ±1℃.
Heat output can be adjusted according to load demand to avoid energy waste.
5.3. High-temperature storage capacity:
The system storage temperature can reach up to 650℃ or even higher, which is suitable for various high-temperature heating demand scenarios.
5.4. Economic efficiency:
Use low electricity price period to store heat and greatly reduce operating costs.
Reduce dependence on fossil fuels and reduce energy costs.
5.5. Modular design:
The system can be modularly expanded according to demand to adapt to heating needs of different scales.
6. Application scenarios
6.1. Industrial field:
High-temperature industrial heating, such as kiln preheating, metal processing, chemical reactions, etc.
Replace traditional gas and oil boilers to improve environmental protection performance.
6.2. Commercial heating:
Central heating system for large buildings such as office buildings and shopping centers.
6.3. Public facilities:
Hospitals, schools and other places that require efficient heating and hot water.
6.4. Energy peak shaving:
As an auxiliary facility for grid peak shaving, it balances the grid load.
7. System advantages
Environmental protection: Reduce carbon emissions, in line with the development requirements of green buildings and low-carbon economy.
Flexibility: Flexible energy use, which can serve both heating needs and industrial thermal energy requirements.
Stability: The system operates stably, reducing the impact of equipment maintenance and heat fluctuations.
Cost savings: Utilize valley electricity resources to achieve economic operation and significantly reduce energy expenditure.
8. Illustration of solid thermal storage system
