1) Heat transfer fast and there is little heat losing
Start up very soon at very low temperature (-60℃)（heat transfer speed: 6m/s）. Thermal capacity is small, thus the heat collected can transmit to tank very soon.
Vacuum inside tube is 1.0*10－3Pa, heat preservation performs very well. Heat transfer parts transmit in one direction thus there is no flow backwards of heat inside tank in cloudy or at night, avoiding heat losing.
2) No crack by frozen, no incrustation
While Working temperature is between -60℃ and 380℃, there is no crack by frozen, no explosion, heat transfer parts work well.
Vacuumntube is separated with water,avoiding ex-plosion of tubes which
exists in traditional collectors. Heat transfer parts have performance under low temperature, thus works well in cold area. Working pressure is low and there is no danger even the temperature of wall of tube is high. Break off water does not occur.
Inner wall of vacuum tube is separated with water, there is no incrustation.
3) Efficient and good performance on pressurization
More than 40% efficient than traditional collector, Average thermal
efficiencyis60%.Instantaneous efficiencyis79%. Bearing pressure 0.8Mpa, is able to connect with tap water supply. Working with pressure and running automaticaly
4) Stable and long lifespan
The collecting system is sealed. Tank and heat transferring tank is sealed mechanically, avoiding leakage.
Even if a few evacuated solar tubes are damaged, there will not be water leakage, thus solar collector still runs
Modularization design, easy to install and operation, safe and good-looking
Patent that the heat transfer medium and metal have good compatibility, without uncoagulating gas, continuously working for 15 years.