Background of Thermal Storage Electric Boilers Development
In recent years, with the continuous development of China's power industry, there has been a significant shift in the industrial structure. Moreover, as the quality of life of the people continues to improve, especially in central cities with special environmental protection requirements and areas with abundant electricity supply, a fertile ground has been cultivated for the application of electric boilers in China. Furthermore, in the past few years, due to certain reasons, there was a temporary phenomenon of excess electricity supply over demand. As a result, power supply departments have introduced some preferential policies (such as promising to waive or reduce capacity fees, with electricity prices as low as 0.18 yuan/kWh in some places), creating favorable conditions for the birth of electric boiler storage in China.
Investment Analysis
1. New investment is minimal. Electric heat storage defers peak electricity usage without requiring capacity upgrades. No network infrastructure or additional facilities are needed; the factory has no special requirements, one machine can serve three purposes; traditional heating methods require investments in municipal networks, standard factories, and other basic supporting facilities.
2. Low operational costs. Electric heat storage utilizes inexpensive off-peak electricity, reducing electricity expenses. Electric heat storage systems have a long lifespan, compact size, simple structure, require no maintenance, and are fully automated with no need for on-site personnel; traditional equipment such as coal, gas, and electric boilers incur costs for major repairs, maintenance, and labor for operation.
3. Quick cash flow. Depending on the electric storage heating usage rate, investments are recouped within 1-5 years and begin to yield profits; assets appreciate annually. Traditional heating methods lack a return on investment concept; assets depreciate annually until they reach zero.
4. Policy supported. It's an energy-saving and emission-reduction technology promoted by 6 national ministries.
Product Advantages:
Extremely Long Lifespan
Heating elements are prone to deformation under high-temperature use, but maintain their structure, exhibit good plasticity, are easy to repair, and have a high radiation rate. They are non-magnetic, highly corrosion-resistant, and have a long service life. In frequently started, stopped, and long-term structurally designed and manufactured energy storage elements, the main body of the energy storage element can be maintenance-free during operation.
Energy Storage Element: This product utilizes energy storage materials, functional thermal fluids, and high-temperature ionic thermal fluid technology to design and manufacture energy storage elements that require no maintenance to the main element throughout the operation period of the unit.
(2) High thermal efficiency, no need for backup boiler
This product utilizes lightweight thermal insulation material for the equipment's outer thermal insulation layer, resulting in minimal heat loss. It employs heating elements featuring rapid temperature rise, even heat distribution, long-distance thermal radiation transfer, and fast heat exchange. Compared to metal heating elements, it boasts a higher electrical to thermal conversion rate, with the system's thermal efficiency exceeding 95%. This is higher than that of water tank-based heat storage systems. In other words, under the same conditions, operation costs can be saved.
(3) System is stable and reliable
The control system employs robust PLCs and distributed CPU parallel processing technology, capable of fully adapting to various environments. The system is designed with an integrated structure, featuring multi-point temperature measurement to ensure the safe and reliable operation of the boiler. Operation is simple, with a high degree of automation.
(4) Automated Unattended Control
Automated control with simple operation, the self-control system can automatically detect indoor and outdoor temperatures, water temperature, flow rates, and other operating parameters through sensors, and automatically run according to pre-set times, temperatures, and heat supply.
Heat Storage Electric Boiler Conditions
Due to the need to supply heating during off-peak hours while also storing thermal loads for flat and peak electricity periods, the power requirement is high, necessitating users to have a separate transformer and sufficient load capacity.
2. Solid thermal storage occupies less floor space, but has a slightly higher investment.
I. Working Principle:
High-temperature solid heat storage electric boilers utilize off-peak electricity (from 23:00 to 7:00, a total of 8 hours) to heat the storage medium to 800 degrees Celsius, storing heat. During peak electricity consumption hours, the heat is automatically released as needed through a control device, providing either adjustable temperature heating through a circulating water system or supplying domestic hot water. This achieves the effect of "shifting peak to fill valley," thereby reducing heating costs.
2. The technological breakthrough of the high-temperature solid heat storage electric boiler lies in the use of solid-state heat storage materials and an integrated structural design, combining heating, storage, heat exchange, heating supply, and control functions into a true vacuum phase change boiler.
3. Notable features of the high-temperature solid heat storage electric boiler:
(1) The product boasts high technological content, integrating the latest achievements in materials science, heat transfer, and control technology, and organically combining them into a single system.
(2) The system is stable and reliable, utilizing cost-effective solid heat storage magnesium bricks for thermal storage, with a lifespan of over 15 years. The internal circulation system is made of full stainless steel, extending its service life. The control system employs a PLC with strong anti-interference capabilities, featuring multiple protection functions in the control software to further ensure system reliability.
(3) High thermal storage capacity with an integrated structural design, occupying minimal land area. The thermal storage capacity reaches 700 Kcal/liter, which is 20 times that of atmospheric water; the system employs an integrated design, significantly reducing the land area required, with the boiler's overall area being only 1/10 of that of an atmospheric water tank boiler.
(4) The system boasts high thermal efficiency, utilizing radiant heat transfer for heating, ensuring stable and efficient heat transfer; the insulation employs advanced thermal insulation materials, delivering excellent insulation performance; the system's design achieves an electrical to thermal conversion efficiency of 95%.
(5) Vacuum phase change boiler, compared to conventional boilers, boasts higher safety performance and can be installed in underground basements.
(6) Easy installation and highly adaptable to boiler rooms. This product can be arranged according to the specific dimensions of the boiler room, with on-site assembly. All major components of the boiler can be transported through general building passages to the site for assembly; the boiler is designed in a modular manner, suitable for a wide range of users.
(7) On-demand heating with constant temperature supply. Thanks to its controllable heating method, this product can maintain a constant temperature supply below 85°C according to customer requirements. It also adapts to the actual climate temperature and supplies heat as needed, with a sensitive system response and simple operation.
(8) Simple operation, unattended. This product features a fully intelligent self-control system, with easy operation. Operators can be trained quickly and efficiently, allowing for unattended operation under full automation. It employs a touch screen interface for user-friendly human-machine interaction, with a full Chinese interface, making the boiler's operating status clear at a glance.
4. The advanced control system utilizes state-of-the-art programmable logic controllers (PLCs), ensuring reliability, stability, fast response times, high precision, and strong anti-interference capabilities. It can operate continuously for extended periods in harsh environments and is equipped with various communication interfaces and modules for easy connections and data recording at all levels.
Industrial Electric Heating Solid Thermal Storage Equipment Technical Specifications:
DZ-100KWDZ-200KWDZ-500KWDZ-1000KWDZ-2000KWDZ-20000KW Total Heat Storage: MJ/8h 2880 5760 1440 2880 5760 5760 576000 Working Pressure: Standard Atmosphere (Mpa) Input Power: 100KW 200KW 500KW 1000KW 2000KW 20000KW Heat Output: MJ/h 360 720 1800 3600 7200 72000 Rated Voltage: 380V 10KV Thermal Efficiency: 95% Outlet Water Temperature: 20-85℃ Heat Exchange Medium: Air (Internal Recirculation) High Temperature of Heat Storage: 800℃ Set Temperature for Heat Storage: Below 750℃ Heat Storage Medium: Solid (MgO) Operating Mode: Intelligent Automatic (PLC Programmable) Operation Interface: Touchscreen Color Screen Environmental Humidity: RH<85% Dimensions (L×W×H) mm: 4560×1760×2240 5360×2090×2400 5630×3140×2930 8230×3250×3360 10080×3610×5300 15300×16300×5300 Life Span: 15 Years Heating Area (㎡): 800-1000 1500-2000 4000-5000 8000-10000 16000-20000 160000-200000
