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Vacuum tube collector have compared with panel collectors a higher efficiency during vague sun exposure (when cloudy appearance and in the winter). The vacuum between the two glass tubes represents perfect an isolation, which the collector before frost up to temperatures of - 18°C protects. Our model VACUUM VTN consists you of 12, 14 or 16 vacuum tubes is very closely next to each other set, in order to take if possible little place. Each tube can be exchanged individually. The flat absorber is from roughened aluminum, which leads to a better yield, if dust or dirt on it surface collects themselves. Also snow can glide more easily. Higher energy output!
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