The collector consists of SEIDO heat pipe vacuum tubes. The vacuum tubes are made of borosilicate glass with thickness of 2.5 mm and have an external diameter D=100 mm and a length L=2000 mm. The aluminium absorber inserted inside is selectively coated with Al-N-O having an absorption coefficient a>0.92 and an emission coefficient e<0.08. The air pressure inside the glass tubes is <0,001 Pa.
The heat pipe's high efficiency in transferring heat even under low solar irradiation and during winter secures very fast response times. With the aluminium reflector integrated with plastic coated angle steel support frame, an aesthetical design with built-in safety, durability and an easy installation is achieved. The reflective surface is made of polished aluminium which prevents the characteristics of reflection to be degraded by dust and ageing.