Vaillant鈥檚 auroTHERM exclusive VTK 570 vacuum tube collector generates the highest annual solar gains per m2 of the company鈥檚 range.

The six 1.5m tubes have a high selective aluminium nitrate absorber coating, helping to transfer maximum heat to the circulating solar fluid. The net collector area is 1m2.

Source

精东影视 Sustainable Design

Postscript

Original print headline 'Upping the solar gain'