Product Description

Himin solar has the automatically production of glass tube. Himin solar tube size diameter ranges from *7mm to **0mmm. The length ranges fromm ***0mm to ***0mm. We have tubes on the solar hot water, solar heating, solar cooker and solar power generation. 
We have tested four other brands in China market, here I would like to share the result of the testing and you can see our solar vacuum tube quality is the best:
(1)     Solar vacuum tube air drying test: other brand tubes air drying at **5.3 m2℃/kW, their tubes are not resistant to high temperature, with fast attenuation and life is short. But Himin brand tubes are tested air drying at **8.2 m2℃/kW, the result shows that our tubes are high temperature resistant, long life, almost no attenuation.
(2)     Solar vacuum tube stuffy dry test: Stuffy dry test basically show vacuum tubes heat absorption performance, this test mainly depends on the film technology. The test result shows that Himin vacuum tubes have high thermal efficiency, good use in winter. Other brand tubes even not reach the basic standards of the state, there are serious hidden dangers and defects, vacuum tube heat collection efficiency is poor, no working in winter.

(3)     Average heat loss coefficient:Himin tubes vacuum degree is less than 5.2****4Pa,our vacuum tube degree is the **0 times than the national standards, so the average heat loss is less than 0.5W/ m2℃, so that the tubes insulation performance is excellent, the tubes almost no heat loss, good use in winter. But other brand vacuum tube average heat loss is higher than 0.****5—0.**5 W/ m2℃,vacuum degree is only 5.2****2Pa, emission ratio is high, so their tubes insulation performance is bad.
In one word, Himin can insure you the tubes quality. Himin Solar Company is the earliest and the largest solar vacuum tube manufacturers, Himin Company is the leading company in the solar tube industry, we have full advanced and standard production line, not like other small company with small workshop and make tubes mostly by handmade. They imitate our technology, but far short of our technical perfection