Vacuum tube solar collector
What is the difference between a vacuum tube and a flat collector?
Two basic types of collectors are distinguished: vacuum tube and flat collector.
The essence of the flat collector is that solar radiation arrives through a sheet of glass onto the continuous absorber surface, which is designed to absorb as much radiation as possible. The pipes of the circulating fluid run between them, which are heated with the help of the heat transferred by the absorber, and then heat the storage water through the heat exchanger. The system is protected by thorough thermal insulation: the thickness of the thermal insulation and the absorber the performance of the collector mainly depends on its absorption capacity. Its great advantage is that it is a "eternal piece" and requires almost zero maintenance (at most, the circulating fluid needs to be changed from time to time). The vacuum tube collector consists of vacuum-insulated glass tubes laid next to each other, and the heat absorbed inside the vacuum tube is transferred almost without loss to the circulated liquid. The advantage of the vacuum tube collector is that it has a greater power, and the vacuum provides perfect thermal insulation. The vacuum tubes must be checked from time to time!
Green energy for the future!
How should I choose a vacuum pipe solar collector?
There are two types, U-Pipe and Heat-Pipe
In U-Pipe pipes, U-shaped pipes would go into each vacuum pipe and carry the heat out. Outdated technology, because although the efficiency is not worse, there is more chance of failure or damage, and the pipes cannot be replaced individually.
A more modern solution is the Heat-Pipe, where each pipe is an independent small closed system collector, it can be replaced individually, and the heat is transferred to the collector pipe on top of the collector only with the help of a heat transfer head.
The thermal insulation and durability of the top of the collector are also important. from an aesthetic point of view, the material of the support frame.
It is recommended to purchase the Heat-Pipe system with an aluminum or stainless steel mounting frame. Avoid cheap painted or colored materials, the solar collector should be the wedge of our house, not its shame!
Vacuum tube solar collectors offer an innovative and efficient solution for the utilization of solar energy. Compared to traditional flat collectors, they boast many advantages, ensuring outstanding efficiency, durability and reliability.
Principle of operation:
Vacuum tube collectors consist of glass tubes in which a vacuum is created. The absorber surface placed inside the tubes absorbs the energy of solar radiation and converts it into heat. The vacuum provides excellent thermal insulation, minimizing heat loss, so the collector operates efficiently even on colder days.
Types of vacuum tube solar collectors:
- Heat-pipe:Collectors equipped with heat-pipe technology have a heat-conducting pipe - copper pipe (14mm) in the vacuum tube. The liquid in the tube evaporates under the influence of heat, then releases the heat in the condenser and turns back into a liquid. This heat transfer process is extremely efficient and minimizes heat loss.
- Big-pipe:Big-pipe collectors have a thicker copper insert (24mm) and a larger absorber surface , so they absorb solar radiation more effectively. They are ideal for use in colder climates.
- U-pipe: U-pipe collectors have U-shaped vacuum pipes that increase the efficiency of the collector. The liquid in the pipes flows by gravity, so it does not require a pump.
Advantages:
- Outstanding efficiency:Vacuum tube collectors can achieve an efficiency of up to 70%, which far exceeds planar collectors performance.
- Reliability and durability:Vacuum pipes are extremely durable and can withstand harsh weather conditions. The lifespan of the collectors can be up to 30 years, with minimal maintenance.
- Freeze resistance:Vacuum tube collectors can be filled with antifreeze liquid, so they can operate without problems even in winter.
- Environmentally friendly:Solar collectors do not emit harmful substances, thus contributing to environmental protection.
Areas of application:
Vacuum tube solar collectors can be widely used:
- Domestic hot water production:The collectors heat domestic hot water using solar energy, thus significantly reducing water heating costs .
- Heating support: Collectors connected to the heating system provide additional heating, further reducing energy consumption.
- Pool heating:Solar collectors can also heat the pool water, extending the bathing season.
Vacuum tube solar collectors are an ideal choice for anyone who:
- They are looking for an efficient and reliable solution for utilizing solar energy.
- I want to reduce water heating and heating costs.
- They are environmentally conscious and energy efficient.
