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The most flexible and adaptable of vacuum tube panels, U-tubes can be mounted at any angle, blending in to restricted access areas, with any system from thermosiphon to in floor heating. SLU series are all-glass evacuated tubular collectors with metal U tubes. Fluid circulates from the header to the bottom of the tubes, then back up.
European certification, efficiency and durability testing results may be downloaded.
Copper U tubes can stand high working pressures-up to 6 bar (0.6 Mpa) and have the highest efficiency of the solar panel only units.
· Graded Al-N/Al selective coating, high energy absorption and low heat transfer losses
· highly evacuated with pressure ≤5×10-2 Pa in the space between outer and inner covers, so no heat loss
· High transparency with boron silicon glass, high resistance to cold water shock
· High 6 bar pressure capable
· 12 tube panels can be joined in series
· Use for pools, thermosiphon systems
· Use in pressure split systems
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