Evacuated Tube Solar Heating System

Product Introduction

Vacuum Tube Solar Heating System | Evacuated Tube Solar Heating System - Thermal tube technology, highly resistant to freezing, preferred in global channels 

The vacuum tube solar heating system adopts mature heat pipe vacuum tube technology, integrating high-transparency borosilicate glass tubes, highly selective heat-absorbing coatings, and efficient heat pipes to achieve low heat loss and high heat transfer. The system consists of heat pipe vacuum tube collectors, pressure-bearing water storage tanks, intelligent controllers, and circulation pipelines, and is suitable for household hot water, commercial heating, swimming pool constant temperature, industrial preheating, and other scenarios. The collectors can be connected in series or parallel as needed, allowing for flexible matching of different scale projects. The product has obtained international certifications such as Solar Keymark and CE, and is popular in high-altitude regions such as Europe, North America, and Central Asia. 

Working principle

The system is based on the dual principles of heat transfer through heat pipes and vacuum insulation. Each heat pipe is independently sealed within a vacuum glass tube and is filled with a low-boiling-point working fluid. Sunlight passes through the glass tube and is absorbed by the heat-absorbing coating, which converts the light energy into heat energy, heating the evaporation section of the heat pipe. The heated working fluid vaporizes and rapidly rises to the condensation section, releasing the heat to the circulating anti-freezing medium in the header tank. The working fluid then condenses and flows back. The vacuum layer prevents heat loss, and the one-way heat transfer of the heat pipes ensures no reverse heat loss. The heated medium in the header tank is transported by a circulation pump to the heat exchange coil in the water tank to heat the domestic water. The system can still operate stably in extremely cold environments without the need for electric heating. 

Product Parameters:

Product Advantages

1. No worries about extreme cold, -30℃ does not cause cracking: The working fluid of the heat pipe has an extremely low freezing point, so no antifreeze is needed. It is not affected by the severe winter and is suitable for high-altitude markets in Northern Europe, Canada, Russia, etc.

2. Instant heating upon sunrise, efficient in low light conditions: The heat pipe starts quickly and can produce hot water rapidly even on cloudy mornings. The average daily heat collection is much higher than that of ordinary collectors.

3. Modular expansion, suitable for all projects: A single group of collectors can be connected in series or parallel at will. From households to large-scale projects, a single solution can flexibly handle various scenarios.

4. Single tube replaceable, maintenance is extremely simple: A single vacuum tube damage does not affect the overall operation. Replacement does not require emptying the system, and the maintenance cost is extremely low.

5. Pressure-bearing water supply, multi-energy complementation: Coupled with a pressure-bearing water tank, the water output is at a constant pressure. It can be connected to gas, heat pumps, and electric heating, and the intelligent controller automatically selects solar energy. 

Factory Advantages

Our company has been dedicated to the research and manufacturing of heat pipe vacuum tube collectors for 15 years. We have a fully automated production line and an annual production capacity of over 100,000 heat pipes. The factory has obtained ISO9001 and ISO14001 certifications and holds a CE certificate. Our products are exported to over 60 countries worldwide. A 40-foot container can carry hundreds of sets of collectors, ensuring stable supply. We offer OEM/ODM customization services and support customized production of boiler shells, the number of heat pipes, and appearance colors as per customer requirements. 

Complementary Services

To assist channel partners in expanding their market, we offer the following:

1. Free system design: Based on the project location, water consumption, and auxiliary heat sources, an array layout diagram and material list will be provided.

2. Installer training: Online + offline technical training. Upon successful completion of the assessment, the "Certified Installer" qualification will be granted.

3. Remote operation platform: Optional 4G/Wi-Fi controller. Supports remote monitoring, fault alarm, and energy consumption statistics.

5. Multilingual material package: Provides product manuals and installation videos in multiple languages, directly applicable for local bidding. 

Installation Precautions

1. Orientation: North in the Northern Hemisphere, South in the Southern Hemisphere, with an inclination of ±10° from the local latitude, and the minimum inclination ≥ 25° to ensure the return flow of the heat pipe.

2. Array Spacing: The spacing between the front and rear rows should be no less than 2.5 times the height of the collector, to avoid blocking in winter.

3. Pipelines: Multiple groups connected in parallel adopt a single-loop design to ensure balanced flow; the circulation pipelines must be insulated, and heating tapes should be added in cold regions.

4. Anti-freezing: If water medium is used in the header and pipelines, glycerol antifreeze should be added; or an emptying scheme can be adopted.

5. Fixation: Use aluminum alloy or stainless steel brackets, firmly connect them to the roof, with a wind resistance grade of ≥ 12 levels.

6. Debugging: After installation, conduct a 1.2 MPa water pressure test, drain the air, and confirm that the circulation is unobstructed. 

Application Case

Development Trends

1. High-altitude market demand surges: The European energy crisis and energy independence in Central Asia have driven the annual growth of heat pipe collectors by over 25%.

2. Large-scale projects replace gas: Hotels, hospitals, and schools have widely adopted vacuum tube arrays, which have outstanding advantages in anti-freezing and maintenance-free.

3. Multi-energy complementation standardization: Heat pipe collectors + heat pumps + heat storage tanks have become the standard configuration for commercial systems in severely cold regions.

Summary: The vacuum tube solar heating system, with its advantages such as heat pipe anti-freezing, rapid startup, module scalability, and low maintenance, has become the ideal choice for solar hot water projects in high-altitude areas worldwide. We sincerely invite distributors and engineers to cooperate and share the benefits of the clean heat energy market! 

Contact us immediately to obtain the system solution, export quotation and channel cooperation policies!