Solar Heat Water System

I. Product Introduction

The 300L Flat Plate Enamel Solar Water Heater System (300L) is an efficient, durable, and intelligent centralized hot water solution. This system is composed of a flat collector array and an enamel inner tank pressure vessel as its core components. It adopts a split-type forced circulation design and is specifically designed for large-family homes, villas, small and medium-sized commercial venues, and construction projects to provide all-day constant temperature and pressure hot water. 

The flat plate collector adopts a high-strength aluminum alloy frame and low iron tempered glass panel. The appearance is smooth and modern, with excellent wind pressure and hail resistance. It can be flexibly installed on rooftops, floors or balconies to achieve integration of solar energy with buildings. The interior of the collector is a full copper flow channel, and the surface is covered with a highly selective heat absorption coating (blue titanium film). The absorption rate is ≥ 95%, and the emission rate is ≤ 5%. Even in low-light conditions, it can efficiently collect heat. 

The inner liner of the water tank is made of high-quality enamel material, which has undergone a 850℃ high-temperature sintering process. The surface is smooth and does not accumulate scale, possessing excellent corrosion resistance and impact resistance, ensuring clean and hygienic water quality. As a pressure-bearing solar hot water system, the working pressure of the water tank is 0.6 MPa. It can be directly connected to the water supply pipeline and the water output is as strong as tap water. The 300L large capacity design can meet the continuous water usage needs of 4-8 person households or small commercial venues. Multiple units connected in parallel can be expanded to a system of several tons. 

This system is widely applicable to various scenarios such as villas, high-end apartments, small hotels, restaurants, beauty salons, enterprise dormitories, and school bathrooms. It is the flagship product for distributors and engineering contractors to promote energy-saving hot water projects. 

II. Technical Parameter Table

300L Flat Plate Enamel Solar Water Heater System | 300L Solar Water Heater System with Flat Plate Design.

Flat Plate Solar Collector

Enamel direct solar water heater

Enamel indirect solar water heater

Stainless steel direct solar water heater

III. Working Principle

The flat-panel enamel solar water heater system operates based on the forced circulation principle. It achieves efficient utilization of solar energy and stable water supply through the intelligent controller. 

1. Thermal energy conversion: Sunlight passes through the low iron tempered glass of the flat collector and is directed onto the selective heat-absorbing coating. The coating efficiently converts solar radiation energy into thermal energy, heating the heat transfer medium (special antifreeze) inside the copper tubes of the collector. 

2. Thermal differential cycle: When the temperature of the collector is 5-10℃ higher than that of the water tank, the intelligent controller automatically starts the circulation pump, transferring the heat in the collector to the coil or jacket of the water tank, and heating the domestic water in the water tank through heat exchange. 

3. Pressure-supplied water supply: The water tank is a fully enclosed pressure-bearing structure that is directly connected to the water supply pipeline. When the user turns on the hot water faucet, under the pressure of the tap water, hot water is pushed out, achieving constant temperature and pressure water supply. Even when multiple points are using water simultaneously, the system still maintains stable water output. 

4. Auxiliary heating: In case of rainy days or insufficient lighting, the system can automatically activate the built-in electric auxiliary heating to ensure continuous hot water supply throughout the day. The controller supports a timed heating function, allowing for further cost reduction through the utilization of off-peak electricity prices. 

IV. Product Advantages

1. Pressurized water output, smooth and comfortable

As a Pressurized Solar Water Heater System, this system directly utilizes the pressure of tap water for water supply. The water output is powerful and the water temperature is stable, completely eliminating the pain points of traditional solar water heaters such as "weak water flow and fluctuating water temperature", and providing a comfortable experience comparable to that of electric water heaters. 

2. Flat plate collectors, elegant and efficient

The flat plate collectors feature all-copper channels and highly selective heat-absorbing coatings, maintaining excellent performance even under low light conditions. The design is sleek and modern, and they can be embedded in rooftops or balconies. They are the ideal choice for urban high-rise buildings to achieve the integration of solar energy and architecture. 

3. Stainless steel inner liner, durable and resistant to corrosion

The enamel inner liner is made through high-temperature sintering. Its surface is smooth and does not accumulate scale. It is resistant to acids and alkalis and has a much stronger corrosion resistance than ordinary stainless steel liners. This ensures pure water quality and a service life of over 15 years, significantly reducing the maintenance costs in the long run. 

4. 300L large capacity, flexible expansion

The 300L capacity design can meet the needs of families and small to medium-sized businesses. Multiple systems can be connected in parallel to form a hot water project of several tons. The modular design enables engineers to flexibly configure the system according to actual water consumption, and the system is simple and reliable. 

5. Intelligent control, energy-saving and hassle-free

Equipped with an intelligent controller, it features functions such as temperature difference circulation, anti-freezing protection, anti-dry-burning, leakage protection, and timed heating. An optional remote monitoring module is available, allowing users to check the water temperature and set the heating time via a mobile app. Engineers can remotely diagnose faults, reducing the cost of after-sales services. 

6. Multi-energy complementation, all-weather operation

The system is equipped with auxiliary heating interfaces, which can be combined with electric heating, air-source heat pumps or gas boilers to form a multi-energy complementary system. Solar energy is given priority, and the insufficient part is supplemented by clean energy to ensure stable hot water supply throughout the year and all seasons. 

V. Factory Advantages

Our company is a high-tech enterprise specializing in the research, production and sales of solar hot water systems. With many years of industry experience, we are long-term strategic partners for numerous distributors and engineering contractors. 

1. Qualification Certification: The factory has obtained ISO9001 quality management system and ISO14001 environmental management system certifications. Its products have received international certifications such as Solar Keymark and CE, meeting the standards for export to markets in Europe, Southeast Asia, the Middle East, etc., helping distributors expand their overseas business. 

2. Core self-production: We have an automated production line for enamel inner containers and a production workshop for flat plate collectors. Key components are produced independently, ensuring full control over quality and guaranteeing delivery schedules. This enables us to provide stable supply support to engineering contractors. 

3. Customization capability: Supports OEM/ODM services. The water tank volume, number of collectors, auxiliary heating schemes, control system configuration, etc. can be customized according to project requirements to meet the individual needs of different customers. 

4. Engineering Support: Provide full-process support ranging from scheme design, technical guidance to after-sales service, to ensure the smooth operation of the project for the engineering company. 

5. After-sales guarantee: We offer a 3-year warranty for the entire machine and a 5-year warranty for core components. Our nationwide service network ensures that dealers and contractors have no worries. 

VI. Accessories List

300L Solar Water Heater System with Flat Plate Design (3-5 sets, configured according to the project) 

VII. Installation Precautions

1. Collector orientation: It is recommended to face south or 15° west of south to ensure the best solar radiation angle. Avoid shading from obstructions. Multiple collectors should be installed in parallel, kept level and consistent. The pipeline should adopt a single-line design to ensure uniform flow. 

2. Water tank location: The water tank should be placed in the indoor equipment room, balcony or dedicated machine room. The floor must be flat and have sufficient load-bearing capacity. A drainage floor drain should be reserved at the bottom. The 300L water tank has a full-load weight of approximately 350kg. Ensure that the installation location meets the load-bearing requirements. 

3. Pipeline insulation: The circulating pipeline must be wrapped with insulation cotton, with a thickness of no less than 25mm. This is to reduce heat loss and prevent cracking in winter. Outdoor pipelines should be equipped with heating tapes and insulation layers. 

4. Anti-freezing measures: In cold regions, it is necessary to add antifreeze to the system and set up a low-temperature circulation protection function to ensure the normal operation of the system during winter. 

5. Electrical safety: Leakage protection switches must be installed to ensure reliable grounding wire connections. For commercial projects, it is recommended to equip with independent distribution boxes and electricity meters, which facilitate energy consumption statistics and safety management. 

VIII. Application Cases

1. Villa Family: In a villa complex, a 300L flat-panel enamel solar water heating system was installed. The collector was installed on the roof, and the water tank was placed in the basement equipment room. This system met the daily bathing and kitchen hot water needs of a family of six, saving approximately 2,000 yuan in electricity costs annually. 

2. Small hotel: Boutique hotel, equipped with 5 sets of 300L systems operating in parallel, providing centralized hot water for 25 guest rooms. The owner reported that "the hot water supply is stable and the electricity bill has decreased significantly." 

3. Restaurant: For medium-sized restaurants, install a 300L system to meet the needs of dishwashing in the kitchen and showering for staff. This will save approximately 5,000 yuan in gas expenses annually and the investment payback period is 2 years. 

4. Employee dormitory: A manufacturing enterprise installed 3 sets of 300L systems in parallel for the employee dormitory building to meet the daily bathing needs of 30 people. The contractor adopted a modular design, which made the installation quick and ensured stable operation. 

Certification:

X. Development Trends

As the green building and "carbon neutrality" policies continue to advance, the solar hot water system market is experiencing the following trends: 

1. Pressure-bearing and Comfort Enhancement: Consumers' demands for the comfort level of hot water are constantly increasing. Pressure-bearing solar systems, with their stable and constant water supply experience, are gradually replacing traditional non-pressure systems and have become the mainstream choice in both household and commercial markets. 

2. Platification and Balconization: Flat plate collectors, with their advantages of beauty, safety and ease of maintenance, are widely used in high-rise residential buildings. Wall-mounted flat plate solar systems on balconies have become the preferred choice for urban households. 

3. Stainless steel inner tank becomes widespread: Due to its excellent corrosion resistance and water quality safety, the stainless steel inner tank has become the standard configuration for high-quality solar systems. Replacing the traditional stainless steel inner tank is the inevitable trend. 

4. Multi-energy complementary system: From a single solar energy system, it evolves into multi-energy complementary systems such as "solar energy + heat pump" and "solar energy + electric auxiliary", achieving optimal energy scheduling through intelligent control to ensure stable water supply around the clock. 

5. Intelligence and Remote Maintenance: Smart controllers with Wi-Fi/4G remote monitoring capabilities have become standard equipment. Users can monitor the system status at any time and anywhere, and engineers can remotely diagnose faults, significantly improving service efficiency. 

Summary: The 300L Flat Plate Enamel Solar Water Heater System (300L Flat Plate Enamel Solar Water Heater System) boasts efficient heat collection from its flat collectors, long-lasting and corrosion-resistant inner enamel tank, comfortable pressure-bearing water supply experience, and a 300L large capacity that is flexible and adaptable. It offers an ideal energy-saving hot water solution for both residential and commercial users. We sincerely invite distributors and engineers across the country to join hands and collaborate, sharing the benefits of the green energy market! 

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