< >

Evacuated Tube Solar Collectors

1. Ultra-efficient heat collection for stronger heat collection;

2. High efficiency heat pipe, stable and reliable heat energy conversion;

3. Adapted to extreme environments and stable operation all year round;

4. Strong structure, easy to cope with bad weather;

5. Pressure-resistant safety design with lower maintenance costs;

6. Flexible installation and perfect integration with the building.

Contact Now E-Mail Telephone WhatsApp

Product Details

Not enough hot water in winter? High energy consumption in summer? It's time to upgrade your heat collection system!

In cold regions, the traditional vacuum tube freezes and cracks, and stops at-10℃.
Business scenarios: Hotels/schools with peak water usage and insufficient hot water supply.
Maintenance problem: water leakage repair requires shutdown, annual loss of nearly 10,000 yuan.

A heat pipe collector is an efficient and stable solar thermal system, with its core component being a specialized "heat pipe" containing a specific working fluid. The device converts solar radiation into thermal energy through a selective absorption coating within the vacuum tube. This process heats the working fluid inside the heat pipe, which rapidly vaporizes and rises to the condensation end at the top. The vaporized fluid transfers heat to water in the storage tank before condensing and returning to the system. This continuous cycle enables rapid heat transfer. Featuring rapid startup, high thermal efficiency, strong frost resistance, and the ability to maintain operation even when a single tube fails, this technology is widely used in domestic hot water supply, heating systems, and industrial preheating applications.

Evacuated Tube Solar Collectors

Product Superiority

1. Ultra-efficient heat collection for stronger heat collection

The D-DOS high-performance selective absorption coating achieves a solar absorption rate of ≥95% and an infrared emissivity of ≤5%.

2. High efficiency heat pipe, stable and reliable heat energy conversion

The core heat pipe contains a special working medium, which vaporizes instantly when heated and rises to the condensation end to release heat efficiently. The heat transfer efficiency is far superior to the ordinary straight-through collector, with fast start-up and minimal heat loss. Even weak sunlight can be effectively collected.

3. Adapted to extreme environments and stable operation all year round

Anti-freeze and cold-resistant: The heat pipe operates at ≤30°C, with no freezing damage even at-25°C, and functions normally in extreme cold regions down to-50°C. Its high-efficiency heat collection technology absorbs scattered light on cloudy days, ensuring consistent heat output and avoiding the 'failure' of traditional solar collectors during overcast conditions.

4. Strong structure, easy to cope with bad weather

High-strength glass can withstand the impact of hail with a diameter of 25mm. At the same time, it reduces the impact of wind load and ensures the safety of the system.

5. Pressure-resistant safety design with lower maintenance costs

The collector tube and the joint tube have no direct contact, completely eliminating the risk of leakage. The damage of a single collector tube does not affect the operation of the whole system, and local maintenance does not need to stop the machine. The condensation end of the heat pipe does not form scale, greatly extending the service life.

6. Flexible installation and perfect integration with the building

It can be installed horizontally, vertically or at any inclination without the restriction of the angle, and can be perfectly adapted to various complex roofs and building facades to achieve the integrated design with the building.

Operational Principle

1. Light energy conversion: Sunlight is selectively absorbed by the selective absorption film and converted into heat energy through the high transmittance glass tube (≥0.89).

2. Phase change heat transfer: the heat is transferred to the evaporation section of the heat pipe through the aluminum fin, so that the working medium is rapidly vaporized and rises to the condensation section.

3. Heat transfer: The condensation section conducts heat to the medium (water, heat-conducting oil, etc.) in the joint pipe through the heat-conducting block.

4. Recycling: after releasing heat and condensing, the working medium returns to the evaporation section under the action of gravity to realize continuous heat transfer.

Application Scenarios

Home hot water, pool heating, heating for hotels, hospitals, and schools, industrial heat supply, and hot water/heating for agricultural and livestock farming

Product Superiority

1. High efficiency heat pipe: special internal mesh liquid absorption core structure, high heat transfer power, life up to 15 years.

2. High borosilicate glass: light transmittance ≥0.92, impact resistance, resistance to rapid cooling and heating, temperature difference up to 270℃.

3. D-DOS Selective Absorption Coating: The coating features a more uniform absorption layer, superior heat resistance, and strong anti-decay properties, ensuring long-lasting efficiency.

4. Insulation layer: polyurethane foam is used, high density, high closed pore rate, excellent heat lock performance.

5. Shell: high quality aluminum material/galvanized steel plate, surface electrostatic spray treatment, corrosion resistance, strong weather resistance.

Product Parameters

Type of collector		HPC182	HPC240	HPC298	HPC370	HPC442
outline dimension （mm）		1025×1920×131	1325×1920×131	1625×1920×131	2000×1920×131	2375×1920×131
Vacuum tube specifications		φ58×1800, the outer wall thickness is 2.0mm, and the inner wall thickness is 1.6mm
fin		3003 anti-rust aluminum, wall thickness 0.2mm, length 1620mm
Number of vacuum tubes		12	16	20	25	30
Total area (㎡)		1.82	2.4	2.98	3.7	4.42
Lighting area (㎡)		1.2	1.6	2	2.5	3
net weight （kg）		42	55	67	85	99
Working pressure (MPa)		0.6MPa
Interface size		Φ 22 light tubes
Number of interfaces		Two
Total heat loss coefficient		2.453W/（㎡·K）
Maximum operating temperature (℃)		120℃
Peak efficiency		0.724	0.724	0.724	0.724	0.724
rated efficiency ①		0.6	0.6	0.6	0.6	0.6
specified power （kW）②	400W/m²	0.2	0.27	0.33	0.42	0.5
	700W/m²	0.46	0.61	0.77	0.96	1.15
	1000W/m²	0.72	0.96	1.2	1.5	1.8
Gas volume (L)		0.8	1.04	1.27	1.57	1.86