Technical data:

Working principle:

In evacuated tubes, there is copper pipe folded into a U-shape with aluminum thermal conductors to transfer the solar energy from the inside wall of the evacuated tubes to the circulation fluid in it. Then the circulation fluid take the heat energy into collectors manifold.

Bontel Advantages:
1.Evacuated tubes with triple layer selective absorber coating, vacuum degree≥5.2x10-4Pa, absorbing efficiency≥92.5%;
2.Applied advanced leaking test technology to ensure the whole system working stably and reliably;
3.With effective heat energy transferring Aluminum fins, U pipe collectors get higher temperature in short time;
4.High and constant pressure polyurethane foaming technology ensure the outstanding insulation quality;
5.Optimal and innovative design make collectors integrated into different buildings;
6.Circulation fluid in closed copper pipes(U Pipe), no water in vacuum tubes. There is no corrosion, no leaking , no scaling, no occasional tube breakages in collectors;
7.Working life ≥20 years.

BTE Solar Co.,Ltd (BTE) is one of the leading manufacturer of solar hot water systems and photovoltaic system in China and around the world. With many years' experiences and Research, BTE team has developed different kinds of solar collectors for different working temperature and circumstance. The solar thermal products including Vacuum tubes, Flat panel collector(High /low temperature), U pipe and Heat pipe collector, Linear concentrating collector, Steam Collector, Solar Water Heater and commercial system. The solar photovoltaic products including solar panels, solar lamps, power generating system and solar pumps. Sentoc automatic production line and strict quality management system can supply you high quality & long working life products.

The board of chairman Mr. Rongtao,Han is one totally technical guy, he has been do the research of solar key technology from year 2000,With his good technical background and ten years research, Sentoc founded in 2009.

Now,BTE and Aoxin Holdings cooperated developed innovative industry integrated model and successfully build Hebei Aochang Industrial Park, Henan Xuchang Industrial Park, Shandong Jining Industrial Park, Total investment more than USD 20,000,000. The Second production base of Sentoc which located in Hebei Aochang Industrial Park has been finished. On the base of professional technology experiences and cooperation with researching institutes and universities, Sentoc has developed high weather-proof selective absorbing film from full-automatic magnetron sputtering production line. Averagely 1.5min/p can delivery your order in short time. The quick measuring instrument from Germany can do function test on production line which ensure each absorber plate meet our high quality requirements.

In 2014, Sentoc successfully developed the new flat panel collector with "Bonding" technology. Its efficiency is 10% higher than normal blue film collector.

In addition, BTE is the core member of Solar Cooling Equipment Joint Research Center and supply heat collecting design for solar cooling system.

Now, BTE not only supply energy saving products to global market, we also supply different energy saving solutions to realize your "Micro-Emission" requirements.