PV-T Hybrid Solar Collector

I. Product Introduction

PV-T Hybrid Solar Collector: The PV-T Hybrid Solar Collector is a dual-energy solution that combines photovoltaic power generation with thermal collection. A single collector can simultaneously generate both electricity and heat, with an overall energy utilization rate of over 70%. The product is specifically designed for the European market and perfectly suits the residential and commercial project requirements of countries and regions with rapidly developing PVT industries such as Germany, the Netherlands, and Spain. It is widely used in scenarios such as villas, apartments, hospitals, schools, hotels, and office buildings, maximizing the value of limited roof space. 

The core laminating technology is the most prominent feature of this product. Traditional PVT modules often encounter problems such as hidden cracks and delamination during high and low temperature cycles due to the difference in thermal expansion coefficients between the photovoltaic module and the heat exchange backsheet. Our advanced laminating process achieves reliable laminating quality with high peel strength and high crosslinking degree. The PV cell and the heat exchange backsheet are formed under pressure in a vacuum environment at one time, ensuring the stability of the module in a wide temperature range of -40℃ to 85℃ and a service life of up to 25 years. The integrated full-flow heat exchange backsheet does not require welding and has no additional thermal resistance. 

II. Technical Parameter Table

Parameter Value: Product Model PVT-Hybrid

Specification of PVT

Remark:

1. Integrated, high income: photoelectric, photothermal integrated coupling design, make full use of solar energy resources, the same   area of more income.

2. Reliable and long life: reduce the working temperature of the surface of the solar module, improve the working condition, extend the service life and obtain more power generation

3. Precision, high performance: The use of half a single crystal multi-main gate N-type TOPCon battery, partition temperature and no hidden crack laminated heat transfer process, close-packed heat exchange runner layout, two EL detection, two air tightness detection, one insulation resistance test, excellent process stability.

III. Working Principle

The PV-T hybrid solar collector operates based on the integrated principle of photovoltaic power generation and solar thermal recovery:

1. Photovoltaic Conversion: Sunlight is absorbed by the TOPCon monocrystalline silicon cells, and approximately 22.44% of the solar radiation is directly converted into electrical energy output.

2. Solar Thermal Recovery: During the power generation process of the PV cells, a large amount of waste heat is produced. If not treated, it will reduce the efficiency of the cells. Our integrated full-flow channel heat exchange backplate is closely attached to the bottom of the photovoltaic layer. The glycerol heat exchange medium flows through the full-flow channel and actively absorbs this heat.

3. Thermoelectric Synergy: The heat exchange medium continuously removes the high temperature generated by the operation of the PV cells, keeping the PV cells always within the optimal working temperature range. It can be used for domestic hot water, floor heating, or pool heating. 

IV. Product Advantages

1. Advanced laminating process, no cracks: This product adopts an integrated high-temperature lamination molding process. The photovoltaic module and the full-flow channel heat exchange backsheet are laminated and formed simultaneously in a vacuum environment, completely solving the problem of photovoltaic silicon sheet cracking and detachment caused by the difference in thermal expansion coefficients between glass and metal in traditional PVT modules.

2. Integrated full-flow channel heat exchange backsheet, highest heat exchange efficiency: The heat exchange board adopts an integrated full-flow channel design, integrating heat absorption and heat exchange functions. The entire board collects and exchanges heat. The flow channel is optimized based on fluid mechanics principles, featuring fast circulation, low thermal resistance, and balanced flow. It is the design with the highest heat exchange area-to-glass area ratio in the industry, maximizing the photothermal recovery capacity.

3. Dual output of photovoltaic and thermal energy, saving roof space: One collector generates both electricity and heat simultaneously. Compared to installing a separate photovoltaic system and a thermal system, it can save installation area. Especially suitable for users in European regions with limited roof space, significantly reducing installation costs and roof load requirements.

3. Intelligent thermal management, improvement in electrical efficiency: The heat exchange backsheet actively absorbs the waste heat from the battery, keeping the PV battery always within the optimal working temperature range. At the same time, it produces medium-temperature thermal energy that can be used for heating or domestic hot water. Compared to conventional photovoltaic modules, the comprehensive energy utilization efficiency is significantly improved.

4. International certification, no worries about market entry in Europe: The product has passed CE international certification and complies with EU safety and performance standards. It provides a complete set of technical documents and test reports.

5. Seasonal energy saving, short investment payback period: Stable power generation and heat production throughout the year, saving electricity and fuel costs annually. 

V. Factory Advantages

Our company has been dedicated to the research and development of integrated photothermal and photovoltaic products for over 15 years. The annual production capacity reaches 820,000 square meters. Our products are exported to more than 65 countries and regions worldwide and are trusted ODM/OEM partners by European customers.

1. Core laminating technology production line: We have introduced fully automatic high-temperature laminating equipment. PV cells and heat exchange back sheets are formed in one step. We strictly control the laminating temperature and the duration of heating/cooling to achieve reliable laminating quality without bubbles, high peel strength, and high cross-linking degree.

2. Patent design of integrated full-flow heat exchange back sheet: The heat exchange back sheet adopts an integrated full-flow structure. The entire board collects and exchanges heat. The flow channels are formed flexibly at one time, and the flow channel single-pass design ensures uniform heat exchange across the entire board without additional welding thermal resistance.

3. European market compliance support: We can assist customers in obtaining market access certifications in major countries such as Germany, the Netherlands, Switzerland, and Spain. We provide a complete set of technical documents, test reports, and product manuals.

4. Large-scale stable supply: With an annual production capacity of 820,000 square meters, we ensure stable supply for large-scale engineering projects without worries. 

VI.  Installation Precautions

1. Orientation and Angle: In most parts of Europe, the collectors face south with an inclination of ±10° from the local latitude; in Northern Europe, it is recommended to have a slightly steeper inclination to enhance the winter heat collection efficiency.

2. Array Spacing: To ensure no obstruction from sunlight in winter, the spacing between the front and rear rows should be no less than 2.5-3 times the height of the collector.

3. Electrical Connection: The photovoltaic part of the PV-T collector needs to be connected to the inverter. The maximum DC voltage is 1500V. Professional photovoltaic cables must be used, along with DC circuit breakers and surge protection devices.

4. Pipe Insulation: The circulation pipes must be insulated with a thickness of ≥30mm. Outdoor pipes should be equipped with heating tapes to prevent freezing in cold seasons.

5. Anti-freezing Measures: The system must be filled with propylene glycol antifreeze, with the concentration depending on the local minimum temperature (-15℃ to -35℃).

6. Support Frame Fixation: The panels must be firmly fixed to the roof or ground structure. The wind resistance grade should be no less than 12. 

VII. European Application Cases

1. Sports Center: A sports arena installed the largest PVT system in Europe, achieving self-sufficiency in energy for the venue level.

2. Office Building: The PVT system was installed on the roof of an office building, enabling zero fossil energy heating and cooling for the building.

3. Residential Area: Multiple new residential projects adopted PVT panels as the main energy equipment, meeting the needs of household electricity, hot water, and underfloor heating.

4. Commercial Project: The PVT market in Europe continues to expand, with a dealer network covering distributed energy applications in industries such as food processing, textiles, and hotels. 

VIII. European Market Development Trends

1. Rapid Market Growth: In 2024, the global PVT market saw an increase in installed area of 72,544 square meters, with a year-on-year growth of 37.5%. The global PVT market's valuation is approximately 2.346 billion US dollars. Germany ranks first globally, followed by the Netherlands and Spain.

2. Emergence of Large Projects: Large-scale PVT system projects have been implemented in various locations across Europe, ranging from sports venues to commercial buildings. PVT is moving from proof of concept to the stage of large-scale commercial use.

3. Multi-energy Complementary Integration: The combination of PVT panels with air source/ground source heat pumps and seasonal heat storage systems (such as ice storage, cross-seasonal heat storage) is becoming a standard solution for zero-energy buildings in Europe.

Summary: The PV-T Hybrid Solar Collector, with advanced laminating technology and integrated full-flow channel heat exchange backplate, perfectly integrates efficient photovoltaic conversion with efficient solar thermal recovery. One collector outputs both electricity and heat simultaneously. Seizing the opportunity of the rapid growth of the PVT market in Europe, we sincerely invite European distributors and engineers to join hands and work together to jointly promote the low-carbon energy transition in the building and industrial sectors! 

Contact us immediately to obtain the exclusive European market solution, technical white paper and channel cooperation policy!