Description

a) vacuum tubes solar collector b) storage tank Vacuum Tube Length ***0 - ***0mm Vacuum Tube Diameter *7 - *8mm Daily efficiency: >=*5% (>=*2% during winter) Inner water tank: **4 2B stainless steel Outer water tank: stainless steel or color steel sheet Bracket: premium cold roll with plastic spray Fastening pieces: stainless steel screw Insulation: closed cell foam**0mm (BASF: ¦Ñ=*5kg/m3) Vacuum tube: AL-N-AL Working temperature: 5 - *0oC Temperature conservation: maximum *2 hours Frame: Aluminum / galvanized steel Hail resistance: *5mm Capacity: option: **0L***0L Lifespan: *5 years or more Standards: ISO***1, ***0 and CE Warranty: 5 years for whole system guarantee