Roth Heliostar 218 Flat Collector

Flat plate solar hot-water collector

'Made of a closed polycarbonate case construction, the Roth Heliostar unites high-tech material and mature technology. The polycarbonate case of the Roth Heliostar assures optimal heat storage, in combination with the high performance absorber, the Roth Heliostar guarantees highest efficiency.

The material is characterised by its special durability, impact strength and temperature resistance and is perfectly suitable for outside usage due to its UV-resistant construction.

Solar panel specification (single flat plate panel)

Length: 1820 mm
Width: 1200 mm
Height : 109 mm
Gross surface area : 2.18 m²
Aperture surface area: 1.96 m²
Weight : 35 kg
Collector case: highly stressable polycarbonate case construction, tight all around due to deep-drawn manufacturing process of one piece, permanently corrosion resistant
Glass cover: low-iron solar safety glass transmission τ = 91 %
Absorber : vacuum, high selectively coated full area absorber
Absorption : α = 95 %
Emission : ε = 5 %
Fluid capacity: 1,26 l
Heat transfer medium: solar fluid Heliostar® and F2
Operation pressure : 15 bar
Solar sensor sleeve : inside ø = 6 mm
Collector connection : 1/2” MT flat sealing
Collector yield, per annum: over 525 kWh/m²a
Area of application : domestic water heating and heating support
Pressure loss water (20°) : p = 5,3 mbar; m = 120 kg/h p = 26,3 mbar; m = 300 kg/h'

Environmental metrics

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