Commercial Solar Thermal – Heat Pipe Collector OEM

I. Product Introduction

Commercial Solar Thermal (also known as Heat Pipe Solar Collector) is a new generation of solar collector products following the traditional methods of sun exposure, flat plate, and full glass vacuum tube collectors. This product utilizes heat pipe vacuum tubes to absorb solar radiation energy, with inorganic heat transfer elements as the heat transfer medium, and then heats the water in the associated tubes or water tanks. The heat pipe vacuum tube collector is one of the solar collectors with the highest heat collection efficiency and the widest application range. It is composed of three core components: vacuum glass tubes, metal heat-absorbing fins, and heat pipes.

1. The working principle of this product is as follows: Solar radiation passes through the high-transparency glass tubes and is absorbed by the highly selective absorption coating on the metal heat-absorbing fins. The light energy is converted into heat energy; the heat energy is rapidly transferred through the copper strip to the evaporation end of the heat pipe, and the low-boiling-point working medium in the heat pipe rapidly vaporizes and rises to the condensation end; at the condensation end, it releases heat to heat the water in the associated tubes, and the condensate flows back to the evaporation end by gravity - this process repeats continuously and efficiently, forming a continuous and highly efficient heat transfer process. Since there is no water flow inside the vacuum tubes, it completely avoids the defects of traditional collectors such as easy scaling, easy cracking, and easy leakage.

2. The heat pipe is divided into the evaporation section, insulation section, and condensation section along the axial direction: The evaporation section transfers heat from the external heat source to the liquid phase working medium inside the tube and causes it to evaporate; the gaseous working medium condenses in the condensation section and transfers heat to the external cold source; the insulation section ensures that the working medium does not exchange heat with the outside. The heat pipes used in solar water heaters are generally two-phase closed heat pipes (gravity heat pipes), and the condensate flows back to the evaporation section by gravity.

3. This product offers four standard specifications: 10 tubes, 20 tubes, 30 tubes, and 50 tubes, and supports OEM/ODM customization. The material of the header tank (aluminum alloy/stainless steel/tinned steel), the number of heat pipes, the interface size, and the appearance color can all be customized as per requirements. With its outstanding performance such as high heat collection efficiency, large heat output, high output temperature, fast pressure operation, high structural strength, and strong frost resistance, it has become the preferred product for commercial solar water heating projects.

II. Product Advantages

1. Vacuum insulation + heat pipe heat transfer, industry-leading heat collection efficiency

The core advantage of the heat pipe vacuum tube solar collector lies in the perfect combination of vacuum insulation and heat pipe heat transfer technology. The double-layer vacuum glass tubes provide excellent insulation and heat preservation performance, minimizing heat loss; the heat pipe, as an efficient heat diode, has a thermal conductivity hundreds of times that of pure copper, enabling rapid response and efficient heat transfer. Research shows that under the same meteorological conditions, the solar guarantee rate and system efficiency of the heat pipe vacuum tube collector are superior to those of flat plate collectors. As the heat collection temperature increases, the heat collection efficiency of the heat pipe vacuum tube collector fluctuates little and remains at a high level.

2. Exceptional frost resistance, normal operation in -40℃ extreme environment

Traditional flat plate collectors and full glass vacuum tube collectors have the risk of pipe freezing in cold regions during winter. The heat pipe solar collector adopts closed heat pipe heat transfer technology, with no water flow inside the vacuum tubes - the heat transfer medium circulates in the sealed heat pipe and is completely isolated from the external water pipes. Even in an extreme cold environment of -40℃, there will be no freezing. This characteristic makes the heat pipe vacuum tube collector the only reliable choice for solar water heating projects in cold regions.

3. Dry plug design, no downtime for single tube maintenance

This product adopts a copper sleeve dry plug connection design - the condensation end of the heat pipe is inserted into the associated tube sleeve, and heat transfer is achieved through dry contact. The water pipes and vacuum tubes are completely separated. Even if a single vacuum tube breaks accidentally, the system does not need to be shut down or the water lines emptied. The broken tube can be replaced individually. This design significantly reduces maintenance costs and downtime losses, especially suitable for large and medium-sized projects such as hotels, schools, and hospitals that do not allow long-term water supply interruptions.

4. Pressure-bearing operation, compatible with large-area forced circulation systems

The rated pressure-bearing capacity of the heat pipe vacuum tube collector is up to 6 kgf/cm² (approximately 0.6 MPa), making it particularly suitable for large-area forced circulation heating projects. The connecting tubes can be combined in series or parallel to meet various scale requirements from family villas to large commercial solar hot water systems. The system supports pressure-bearing operation and can directly connect to municipal water pressure to achieve simultaneous constant-temperature water supply at multiple points.

5. Modular design, flexible selection of 10/20/30/50 tubes

This product offers four standard specifications: 10 tubes, 20 tubes, 30 tubes, and 50 tubes. The modular design provides unparalleled flexibility for customers in selecting the right configuration. 10 tubes are suitable for family villas and small guesthouses; 20 tubes and 30 tubes are the main configurations for hotels, schools, livestock farms, and small and medium-sized industrial and commercial hot water projects; 50 tubes are suitable for large commercial projects and centralized heating systems. Multiple heat collectors can be easily connected in parallel to meet larger hot water demands.

6. High-temperature output, expanding application boundaries

The working temperature of the heat pipe vacuum tube collector can reach 40-120°C, and the sun exposure temperature can reach above 300°C. This high-temperature output capability makes it not only suitable for conventional solar hot water systems but also widely applicable in heating and air conditioning, industrial heating, seawater desalination, medical sterilization, product drying, and other fields.

III. Factory advantages - vertical integration + OEM customization

As a professional manufacturer in the field of commercial solar thermal pipe collectors, our company has a complete industrial chain layout from vacuum glass tube production to collector assembly:

1. Vertical integration production: The company has achieved vertical integration production from self-production of vacuum glass tubes to assembly of collectors. From glass raw materials, drawing process to coating technology, every step is under strict monitoring - ensuring that each vacuum tube has consistent high performance and long lifespan. The self-produced glass tube production line guarantees the stable supply of core raw materials, unaffected by external market fluctuations.

2. OEM/ODM customization services: As a factory-direct manufacturer, we provide comprehensive OEM/ODM services - tank material (aluminum alloy/stainless steel/tinned steel), number of heat pipes, interface diameter, appearance color can all be customized according to customer project specifications. We support brand/LOGO customization to help customers create their own brand products.

3. International authoritative certifications: The product is certified by Solar Keymark - an authoritative certification issued by the European Committee for Standardization (CEN), which is the "passport" for solar products entering the European market. The product fully complies with series standards such as EN 12975, and its performance parameters have been verified by independent third-party testing institutions. Products with Solar Keymark certification can apply for government energy-saving subsidies in multiple European countries, greatly enhancing the market competitiveness of the terminal products.

4. Capacity scale and quality guarantee: The company has fully automated production lines and a complete quality control system, with annual production ranking among the top in the industry. Phosphorus-copper welding technology provides durable, crack-resistant joints that can withstand long-term stress. The collector uses 3003 aluminum alloy fins, lightweight, corrosion-resistant, and high thermal conductivity; pure copper heat-conducting channels ensure maximum heat transfer efficiency.

5. One-stop service: From product design, OEM production to export customs declaration, clearance, and shipping, we provide a full-process one-stop service. Delivery cycle is 15-25 working days, and full container (20ft/40ft container) or bulk cargo consolidation can be used.

IV. Packaging and transportation

Packaging method:

• The vacuum tubes are packaged in independent pearl cotton tubes with bubble film, to prevent damage during transportation.

• The connecting tubes and brackets are packed in export-grade corrugated boxes with wooden pallets.

• The complete machine accessories are labeled by category and accompanied by installation instructions.

• OEM customized packaging can be provided according to customer requirements.

Transportation method:

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

• Full container or unpacked cargo container consolidation is available

• Provide one-stop logistics services including export customs declaration and clearance

V. Application fields

Commercial Solar Thermal (Commercial Solar Thermal Collector Tubes) are widely applied in the following fields:

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

• Hospitals - Washing, disinfection and domestic hot water

• Schools/Dormitories - Central hot water supply

• Livestock farms/Agricultural greenhouses - Thermal insulation heating, livestock hot water supply

• Factories/Enterprises - Industrial preheating, employee domestic hot water supply

• Constant temperature swimming pools - Pool water heating

• Seawater desalination - Core equipment for solar thermal conversion

• Heating and air conditioning - Solar-assisted heating and cooling

• Product drying - Drying of agricultural and industrial products

• Residential communities/Villas - Individual or centralized hot water supply

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Whether you are a hotel engineer, school logistics purchaser, livestock farm owner, real estate developer or an investor in new energy projects, we are willing to provide you with professional consultation on commercial solar thermal collector tubes and OEM customized solutions.

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