solar vacuum tube

タイトルまたは説明

（1）Higher heat efficiency: advanced heat transferring style of the heat pipe, excellent selective absorptive coating and perfect combination with high vacuum heat preservation. （2）Wide applicable range: as the heat pipe has less heat capacity, it can be started quickly even under cloudy day and collect heat effectively. It can work normally even subzero *0 degree. As no water in the vacuum tube, it can effectively prevent lowing of heat efficiency due to frost cracking. （3）Each individual tube can work independently, and the whole machine can still work if any of individual tube is damaged. The service life of the heat pipe can be longer than *5 years. （4）The unique connection between the heat pipe and the vacuum tube can ensure both sealing and glass vacuum tube damaged. The specification: *7****0/***0㎜ *8****0/***0㎜ *0****0/***0㎜