Commercial Split Solar Water Heating System

I. Product Introduction

This system is a high-efficiency hot water supply system that separates the collector from the water storage tank and achieves solar thermal conversion through forced circulation. It consists of four core modules: flat plate solar collector, pressurized water storage tank, intelligent pump station, and control system. The collector can be flexibly installed on the roof, ground, or wall, while the water storage tank can be placed in any location - the tank does not need to be installed above the collector, providing great installation flexibility for high-rise buildings, villas, and commercial spaces.

The system adopts closed dual-loop forced circulation technology: at the collector end, antifreeze liquid (ethylene glycol-water mixture) is used as the heat transfer medium, driven by the pump station to circulate between the collector and the built-in coil heat exchanger in the water tank, transferring solar heat to the water tank; the inner liner of the water tank is made of food-grade stainless steel (SUS304/316L), with a pressure-bearing capacity of up to 7 bar (0.7 MPa), and can be directly connected to municipal water pressure. This design ensures that the system can operate stably even in cold regions (with antifreeze protection) and in high-rise buildings (with pressurized water supply).

Working principle

The system adopts the forced circulation indirect heat exchange principle: The flat collector absorbs solar radiation, and the blue titanium film heat-absorbing coating converts light energy into heat energy, heating the anti-freezing medium in the heating channel. When the temperature of the collector is 5-8℃ higher than that of the water tank bottom, the intelligent controller starts the circulation pump, pumping the high-temperature medium into the heat exchange coil inside the water tank. The heat is transferred through the pipe wall to the domestic water, and the cooled medium returns to the collector, forming a closed loop. The water tank is directly connected to the tap water, with a pressure of 0.6 MPa, and the water pressure is constant. On rainy days or when there is insufficient light, the system automatically starts electric auxiliary heating or联动 heat pumps and gas boilers to ensure constant temperature water supply throughout the day. 

II. Product Parameters

Parameter Item Technical Specifications

Product Name Commercial Split Pressurized Solar Water Heating System

Flat Plate Solar Collector

Stainless Steel Water Tank

Workstation:

III. Product Advantages

1. Split Design, Flexible Installation

The collector and water tank are installed separately, with the collector placed on the roof, balcony, wall, or ground, and the water tank placed in any location within the building. This design perfectly solves the problem of traditional integrated solar water heaters' inability to be installed in high-rise buildings, while achieving harmonious integration with the building's appearance.

2. Pressurized Operation, Multi-point Constant Temperature Water Supply

The water tank operates at a pressure of up to 7 bar, directly connected to municipal water pressure, without the need for a booster pump to achieve simultaneous constant temperature water supply. Hotels, schools, dormitories, and villas can all enjoy stable and comfortable hot water experiences.

3. Anti-freezing Design, Year-Round Peace of Mind

The system adopts a closed-loop circulation of ethylene glycol antifreeze, and can operate normally even in extremely cold regions (-40°C). This completely solves the problems of pipe freezing and collector scaling in traditional solar water heaters during winter.

4. Efficient heat collection, significant energy saving

The flat plate collector uses a high-selectivity absorption coating (blue film/black film), with an absorption rate of ≥ 94% and an emissivity of ≤ 6%. Combined with low-iron ultra-white tempered glass cover plates (transmittance ≥ 92%), the system can provide 50%–80% of the building's hot water demand annually, significantly reducing electricity or gas expenses.

5. Intelligent control, automatic operation

A temperature difference controller is equipped, which monitors the temperature difference between the collector and the water tank in real time and automatically starts and stops the circulation pump. The system can automatically switch between solar heating and electric auxiliary heating according to the set temperature (35°C–75°C), achieving intelligent operation 24/7.

6. Long lifespan, low maintenance

The entire copper flow path is combined with laser-welded heat-absorbing plate cores, which are corrosion-resistant and resistant to thermal shock. The inner tank of the water box is made of food-grade stainless steel, and the insulation layer is high-density PU foam. The entire machine has a design life of 20-25 years, with extremely low maintenance costs.

IV. Application fields

The Commercial Split Solar Water Heating System is widely applicable to the hot water supply of various commercial and public buildings:

• Hotels/Business Venues - Constant temperature hot water supply for guest rooms

• Hospitals - Washing, disinfection and domestic hot water

• Schools/Dormitories - Central hot water supply

• Enterprise dormitories/Factories - Employee living hot water

• Large constant-temperature swimming pools - Pool water heating

• Residential communities/Apartment buildings - Central or individual hot water supply

• Villas - High-end residential hot water solution

Industrial preheating - Boiler water replenishment preheating, leather factories and other industrial uses

V. Factory advantages

As a professional manufacturer of commercial split pressure solar water heating systems, our company has the following core advantages:

• Full-process layout: From flat plate collector production, water tank manufacturing to pump station integration, we have complete independent production capabilities

• Advanced production equipment: We have first introduced German whole-panel automatic welding equipment and adopted laser welding technology to ensure the welding quality and heat conduction efficiency of the plate core

• Self-produced high-selectivity coatings: The company also masters the core production technologies of blue film and black film, and the quality of the collector absorption coating is completely under our control

• Comprehensive international certifications: Our products have passed Solar Keymark, CE, TÜV, ISO 9001 and other international authoritative certifications

• Production capacity: Annual production of standard flat plate collectors exceeds 100,000 pieces, with stable large-scale supply capability

• Customized services: The water tank capacity can be customized to 5000L, and the size and material of the collector can be customized as needed

VI. Packaging and transportation

Packaging methods:

Flat plate collectors are packaged in export-grade corrugated cardboard + pallets, with foam/particle foam for shock protection inside

Water tanks are packaged in wooden boxes or high-strength cardboard boxes, with polyurethane foam insulation layer that also has buffering protection function inside

Pumps and controllers are packaged in independent cardboard boxes, with components classified and labeled

Customized packaging can be provided according to customer requirements

Transportation method:

Support various transportation methods including sea, air and land transportation.

Full container (20ft/40ft container) or unpacked cargo container consolidation is available.

Delivery cycle: 10-20 working days

Provide one-stop logistics service including export customs declaration and clearance

Contact us immediately to get project quotations and technical solutions!

Whether you are a hotel engineering company, real estate developer, school logistics purchaser or an investor in new energy projects, we are willing to provide you with professional consultation and customized solutions for commercial split-pressure solar hot water systems.

Send an inquiry to obtain a dedicated solution!