SOLAR EVACUATED
VACUUM TUBES

SunRain's solar vacuum tube technology uses an International patented film coating called “3 Hi”. Within each solar evacuated tube, 3 systems are used to ensure the most effective heat absorption. This included a AL-N/AI absorption layer but also a second anti-reflection aluminum layer as well as a third copper layer for infrared waves. The added two layers conduct heat better and stabilize the coating allowing for a much longer lifespan of 20 year or greater. Test Drive one of our solar systems and you will quickly see the difference a powerful "engine" makes. See below for comparison of SunRain's performance versus other leading solar water heating evacuated tube suppliers.

SunRain’s unique aluminum/silver coated heat transfer bulb it 2 times larger than most other heat pipes. This provides more heat energy transfer resulting in a more efficient collector. The added coating is used to generate a much better heat transfer from the bulb to the manifold. Also, this coating helps ensure no corrosion or oxidization occurs unlike standard copper bulbs.