General solar vacuum tube vacuum
2, a high degree of vacuum analysis: automatic exhaust equipment, semi-finished tube after sealing in the vacuum exhaust gas and heating; the sandwich glass tube containing gas temperature by more than and 400 degrees, more than 1 hours of the interlayer insulation glass and impurity impurity in extracted getter after vacuum up to 10-4Pa the number of grade. Vacuum sandwich low vacuum brings hidden trouble: heat dissipation, not heat preservation, affect the use effect, short life, vacuum tube "advance into the aging period" US>0.06 (GB 0.08) is much higher than the countryStandard, the vacuum degree of vacuum can reach 10-4Pa (GB 5*10-2Pa), the air drying temperature can reach 300 DEG C, the heat collection performanceBetter.
3, vacuum tube side heat collection side heat dissipation; vacuum tube heat sink for 50% of the water heater; if the vacuum degree will be like a thermos bottleGall bladder, two or three years without heat preservation; glass tube cleaning before coating is not clean, water stains and fingerprints will be high temperature vaporization, reduce vacuum;In order to save the general vacuum time short made low degree of vacuum; glass annealing is not good, there will be no danger of stress, resistance to thermal shock, easy to burst; film emission ratio, heat loss, insulation, winter cold, easy cracking.
1, such as the Emperor Ming three executivesThe three target magnetron sputtering is used for continuous coating, and the bottom layer of the metal is made of copper, so that the heat radiated from the hot water in the vacuum tube is betterTo reflect back, the absorption ratio is greater than 0.925 (GB 0.89), emission ratio of 0.06 (GB 0.08) is much higher than the countryStandard, the vacuum degree of vacuum can reach 10-4Pa (GB 5*10-2Pa), the air drying temperature can reach 300 DEG C, the heat collection performanceBetter.
