Solar Water Heater

I. Product Overview

The flat plate integrated solar water heater is a premium solar thermal system that combines advanced solar collection technology, innovative structural engineering, and modern industrial aesthetics into one integrated solution. The product adopts a triangular overall structure with a stable center of gravity. The support frame features streamlined geometry with varying thicknesses, creating a balanced combination of mechanical strength and visual rhythm.

The overall appearance is finished in a refined space-grey tone that conveys a calm, elegant, and high-end industrial character. The color integrates harmoniously with different architectural styles and roof finishes, ensuring the unit blends naturally into modern buildings without visual heaviness.

Functionally, this system differs fundamentally from conventional solar water heaters. It delivers high hot-water output, stable mains-pressure operation, and perfectly balanced cold and hot water pressure, effectively eliminating temperature fluctuations during use. The system operates primarily on clean solar energy, offering low operating costs, long service life, and reliable long-term performance.

II. Core Technical Features

1. Innovative Thermal Storage System

The storage tank adopts a patented enamel-jacket structure. The jacket is filled with a heat transfer medium and connected to the flat plate collectors through a natural circulation loop. Solar heat absorbed by the collectors is transferred via the circulating medium into the jacket, where it is evenly transmitted into the inner water tank. The enamel lining offers excellent corrosion resistance and high-temperature durability, ensuring clean water quality and long service life.

2. Pressurized Top-Feed Operation

The system operates as a pressurized system, with water pressure supplied directly by the municipal water network. No additional booster pump is required to provide strong, consistent water flow for a comfortable showering experience. Cold and hot water pressure remains balanced at all times, and combined with accurate temperature control, the system ensures stable and comfortable outlet temperatures.

3. Separated but Integrated Design

The collector and storage tank are structurally separated but mounted together on an integrated support frame. This design allows optimized thermal performance while simplifying transportation and installation. The support structure is formed from hot-dip galvanized steel sheets with high-quality surface coating, providing excellent corrosion resistance and mechanical durability.

4. High-Efficiency Solar Collection Core

The flat plate collector frame is manufactured from electrophoretic aluminum profiles assembled by riveting, resulting in a lightweight yet rigid structure. The absorber plate is coated with a high-performance selective coating with a solar absorptance exceeding 95%, ensuring high collection efficiency under various solar conditions.

III. Working Principle

The system operates based on the thermosiphon natural circulation principle. Solar radiation heats the fluid inside the flat plate collector. As the fluid temperature rises, its density decreases and it naturally flows upward into the jacket surrounding the storage tank. Heat is transferred through the jacket to the domestic water inside the tank. The cooled fluid then returns to the collector for reheating, forming a continuous natural circulation loop.

This process requires no external pump or electrical power, resulting in silent, stable, and energy-efficient operation. For periods of insufficient solar radiation, such as during extended cloudy or rainy weather, an auxiliary electric heater is integrated into the system. The indoor controller allows users to monitor water temperature and water level in real time, ensuring reliable 24-hour hot water availability.

IV. Key Advantages

1. Flexible Configuration

Multiple installation angles are available, including 0°, 25°, and 45°, to suit different roof structures and solar angles. Storage capacities of 150 L, 200 L, and 300 L are offered to meet the needs of different household sizes. The tank is available with either enamel lining or stainless steel lining to match local water quality conditions and user preferences.

2. Modular and Expandable Design

Multiple units can be connected in series or parallel to meet higher hot-water demand. The collector, tank, and support frame are packaged separately, reducing transportation costs and simplifying on-site assembly.

3. Safety and Reliability

The design ensures complete separation between water and electricity, eliminating the risk of electrical leakage. The double corrosion protection of galvanized steel plus surface coating provides long-term durability for outdoor installation.

4. High Efficiency and Comfort

The use of high-performance D-DOS selective coating ensures excellent thermal efficiency, reducing electricity consumption by up to 80% compared with conventional electric water heaters. Pressurized operation ensures stable water flow and consistent temperature during use.

5. Easy Installation and Low Maintenance

The system is pre-assembled at the factory wherever possible, significantly reducing installation time. Natural circulation eliminates the need for pumps, reducing system complexity and maintenance requirements.

V. Conclusion

With its refined triangular form, space-grey aesthetic, advanced flat plate collection technology, innovative jacket heat exchange design, and intelligent control system, the flat plate integrated solar water heater represents a new generation of solar thermal solutions. It provides stable, comfortable, and energy-efficient hot water while harmonizing with modern architectural aesthetics. It is an ideal choice for users who value comfort, sustainability, and long-term reliability.

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