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            Constructive    and Dimensional Parameters
            Receiver Tube Length2000    (room temperature) 4060    (room temperature)4060    (room temperature)4386    (room temperature)4386    (room temperature)4060    (room temperature)4025 (room    temperature)
            4086.6 (400℃)4096    (550℃)4415    (400℃)4428    (550℃)4086.6    (400℃)4050 (400℃)
            Aperture  Length92.1%
            (400℃)
            96.7%
            (400℃)
            96.5%
            (550℃)
            96.9%
            (400℃)
            96.6%
            (550℃)
            96.7%
            (400℃)
            95.0%
            (400℃)
            Absorber Tube Outer Diameter42mm70mm70mm80mm80mm88.9mm102mm
            Absorber Tube Thickness1.5mm / 2mm2.2mm3mm2mm3mm 2.5mm7.5mm
            Absorber Tube MaterialStainless    Steel
            304L
            Stainless    Steel
            321
            Stainless    Steel
            321H
            Stainless    Steel
            321
            Stainless    Steel
            321H
            Stainless    Steel
            321
            Stainless Steel
            347H
            Stainless steel tube according to ASTM A312
            Glass Tube Outer Diameter90    / 100mm130    mm130    mm130    mm130    mm145    mm150 mm
            Glass Tube Thickness2.5mm3mm3mm3mm3mm3mm3mm
            Envelope Tube Materialborosilicateborosilicateborosilicateborosilicateborosilicateborosilicateborosilicate

            Optical and Thermal Parameters
            Average Thermal Emittance at 400oC9%8.5%10% (550 ℃)
            8.5% (400 ℃)
            8.5%10% (550 ℃)
            8.5% (400 ℃)
            8.5%8.5%
            Average Solar Transmittance (AM 1.5)96.5%96.7%96.7%96.7%96.7%96.7%96.7%
            Average Solar Absortance96.2%96.2%96.2%96.2%96.2%96.2%96.2%
             
            Operational    Parameters
            Max. Operating Temperature300    ℃550    ℃550    ℃400    ℃550    ℃400    ℃550 ℃
            Max. Operating Pressure40    bar40    bar40    bar40    bar40    bar40    bar40 bar
            Annulus Vacuum Pressure10-2 Pa10-2 Pa10-2 Pa10-2 Pa10-2 Pa10-2 Pa10-2 Pa
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