MATERIAL SPECIFICATION                              For more information see Table I, II or III.

MIRROR

Aluminum foil MIRO2 4200GP from ALANOD, total reflection. 95%,

Foil thickness: 0.4 mm

BEAM and COLUMN

Standard 8” round tube, outer diameter 219 mm (8.625 in)

Wall thickness: t = 6.35 mm (0.250 in)

FOUNDATION PYLON

Standard 10” round tube, outer diameter 273 mm (10.750 in)

Wall thickness: t = 6.35 mm (0.250 in)

BEARING HOUSING

Standard 2” seamless steel tube, outer diameter 60.3 mm (2.375 in)

Wall thickness: t = 5.54 mm (0.218 in)

FRAME, SUPPORT MEMBER, CRANK, PEDESTAL

Standard steel sheet, thickness: t = 5 mm (0.199 in)

SHAFT

Chrome carbon steel bar D = 44.45 mm (1.750 in)

TRACKING BAR

Extruded aluminum tube D = 76 mm (3 in)

Wall thickness: t = 2 mm (0.079 in)

SPRING

Coil diameter: D = 152 mm (6 in), number of coils n = 16

Bar diameter: d = 19 mm (0.750 in)

TRACKING ROD

Carbon steel, half hard, diameter: d = 7.94 mm (5/16 in)

The weight break-down of the collector unit is described in Table I. The total weight of the collector unit will be 3,450 kilograms for a total mirrors’ area of 180 square meters, which results in a weight of 19.2 kilograms per square meter of reflective surface, a light-weight structure when compared with other technologies.

With parabolic troughs, for example the Euclides-Thermie Power Plant (Tenerife, Spain) the collector weight was about 75 kg/m², and the total cost of the sub systems: structure, tracking and mirrors was 260 $/m².