Custom Flat-Plate Solar Water Heater

I. Product Overview

The flat plate integrated solar water heater is a modern hot water supply system that combines visual elegance, functional reliability, and environmental responsibility into a single solution. Through innovative design and refined engineering, it provides stable and efficient hot water for residential households and small-scale facilities.

The system adopts a triangular structural form that ensures mechanical stability under wind and weather conditions. The streamlined support frame uses carefully proportioned lines to balance strength and visual lightness. The space-grey finish offers a calm and elegant industrial character that integrates smoothly into different architectural styles and rooftop environments.

II. Core Functions and Product Characteristics

The system operates as a pressurized mains-fed unit, delivering strong and stable water flow without auxiliary pumps or manual filling. The collector and storage tank are designed as separate functional components but assembled into an integrated structure, simplifying installation and reducing site complexity. Balanced cold and hot water pressure combined with precise temperature control eliminates water temperature fluctuation and ensures consistent user comfort.

During extended periods of low solar radiation, the auxiliary electric heater supports the system to maintain reliable hot water supply. The indoor control interface allows users to monitor system status conveniently and intuitively.

III. Working Principle

The system operates based on thermosiphon circulation and natural convection. Solar energy is absorbed by the flat plate collector and transferred into the internal fluid or water. As the temperature rises, the heated fluid naturally flows upward into the jacket surrounding the storage tank, transferring heat into the domestic water. The cooled fluid then returns to the collector, creating a continuous natural circulation loop.

This passive circulation requires no mechanical pump, ensuring silent, energy-efficient, and maintenance-free operation. The auxiliary electric heater activates only when solar input is insufficient to meet hot water demand.

IV. Product Advantages

The system offers multiple configuration options to suit different users and environments. Installation angles of 0°, 25°, and 45° allow adaptation to various roof slopes and solar orientations. Storage capacities of 150 L, 200 L, and 300 L accommodate different household sizes. Tank lining options include enamel and stainless steel to suit different water quality conditions.

The modular design allows multiple units to be connected in series or parallel, enabling customized system capacity. Separate packaging of collectors and tanks improves transportation efficiency and simplifies on-site installation.

V. Safety and Reliability

Electrical and water systems are fully separated, eliminating the risk of leakage or electrical hazards. The support structure is formed from hot-dip galvanized steel with surface coating, providing dual corrosion protection for long-term outdoor durability. Supported by mature manufacturing processes and extensive industry experience, the system delivers high operational stability and long service life.

VI. High Efficiency and Easy Installation

The collector absorber surface uses high-efficiency D-DOS selective coating with solar absorptance exceeding 95%, ensuring excellent thermal performance and reducing electricity consumption by up to 80% compared with conventional electric water heaters. The natural circulation system eliminates pumps and additional components, reducing failure points and maintenance requirements. Factory pre-assembly and integrated design simplify installation and reduce labor time.

VII. Environmental Value

By using solar energy as the primary heat source, the system significantly reduces reliance on conventional energy and lowers operating costs. It represents a clean, low-carbon, and sustainable hot water solution for environmentally conscious households.

Enamel direct solar water heater

Enamel indirect solar water heater

Stainless steel direct solar water heater