300l Flat Plate Pressured Solar Water Heater

I. Product Introduction

The 300L Flat Plate Pressured Solar Water Heater (300L Flat Plate Pressured Solar Water Heater) is an efficient and energy-saving hot water device specially designed for large-sized households, small commercial spaces, and construction projects. The product adopts a split structure, consisting of a flat collector and an enamel inner tank water tank. It combines the advantages of efficient heat collection, long-term corrosion resistance, and stable pressure bearing, and can meet the centralized hot water needs of households with multiple people, small hotels, restaurants, beauty salons, and enterprise dormitories, etc. 

The flat plate collector is equipped with a high-strength aluminum alloy frame and low iron tempered glass panel. Its appearance is smooth and modern, with excellent wind pressure and hail resistance. It can be flexibly installed on rooftops, floors or balconies, achieving the integration of solar energy and architecture. The interior of the collector is a full copper flow channel, and the surface is covered with a highly selective heat absorption coating, with a heat absorption efficiency of over 95%. It has low heat loss and can stably output heat even under weak light conditions. 

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 Pressurized Solar Water Heater, the water tank has a fully enclosed and pressurized structure. The working pressure is 0.6MPa, and it can be directly connected to the water supply pipeline, with strong water output similar to that of tap water. The 300L large capacity design can meet the continuous water usage needs of 4-8 person households or small-scale commercial venues. 

II. Technical Parameter Table

300L Flat Plate Pressured Solar Water Heater | 300L Flat Plate Pressured Solar Water Heater.

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 plate pressure-bearing solar water heater adopts the forced circulation working principle and realizes 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 (antifreeze) in the copper tubes inside 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. Through heat exchange, the domestic water in the water tank is heated. 

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 showering

As a Pressurized Solar Water Heater, the 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 inner liner is made of enamel material. It undergoes high-temperature sintering, resulting in a smooth surface that 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, suitable for both commercial and household use

With a 300L large capacity design, it can meet the daily bathing needs of 4 to 8 person households, and can also serve as the basic hot water module for small to medium-sized commercial venues. Multiple units can be connected in parallel to expand to a system of several tons, meeting the requirements of large-scale projects. 

5. Intelligent control, energy-saving and convenient

The device is equipped with an internal intelligent controller, featuring 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 also remotely diagnose faults, reducing the cost of after-sales services. 

V. Factory Advantages

Our company is a high-tech enterprise specializing in the research, production and sales of solar water heaters. We have extensive industry experience and are long-term strategic partners for numerous distributors and engineering contractors. 

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

2. Core 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. 

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. List of Accessories

300L Flat Plate Pressured Solar Water Heater | 300L Flat Plate Pressured Solar Water Heater

VII. Installation Precautions

1. Collector orientation: It is recommended to face south or 15° west of south. This ensures the optimal sunlight angle and avoids shading by obstructions. Multiple collectors should be installed in parallel, kept level and consistent, and the pipeline should adopt a single-pass 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. 

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. Large-sized Family: A villa, equipped with a 300L flat-panel pressure-bearing solar water heater. The collector is installed on the roof, and the water tank is placed in the basement equipment room. It can meet the daily bathing and kitchen hot water needs of a family of six, saving approximately 2,000 yuan in electricity costs annually. 

2. Small and medium-sized hotels: A high-quality guesthouse, equipped with 2 300L systems operating in parallel, providing centralized hot water for 10 guest rooms. The owner reported that "the hot water supply is stable and the electricity bill has decreased significantly." 

3. Medium-sized restaurants: Medium-sized restaurants, equipped with a 300L system to meet the needs of dishwashing in the kitchen and showering for staff. Annual gas cost savings are approximately 5,000 yuan, and the investment payback period is 2 years. 

4. Enterprise dormitory: A manufacturing enterprise in Hangzhou, Zhejiang Province, installed three 300L systems in parallel for the dormitory building to meet the daily bathing needs of 30 employees. The contractor adopted a modular design, which made the installation quick and ensured stable operation. 

IX. Development Trends

As the green building and "carbon neutrality" policies continue to advance, the market for flat-panel pressure-type solar water heaters shows 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: 300L Flat Plate Pressured Solar Water Heater (300L) With its efficient flat plate collectors, durable enamel inner tank, comfortable pressurized water supply experience, and 300L large capacity for flexible adaptation, it provides an ideal energy-saving hot water solution for both household 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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