Thermal Performance of a Dimpled Tube Parabolic Trough Solar Collector (PTSC) with SiO₂ Nanofluid

Table 1

Specification of the experimental setup.

Specification	Dimensions
Collector length	1800 mm
Width of collector	1200 mm
Length of absorber plate	1650 mm
Thermal conductivity of absorber plate	387 W (mK)^-1
Width of the absorber plate	1000 mm
Plate thickness	5 cm
The density of plate material	8954 kg/m^3
The diameter of the riser pipe	0.0125 m
The diameter of the header pipe	2.5 cm
The riser and head of thickness	7 cm
Tube centre to centre distance	11.25 cm
Glass and absorber plate between the spacing	30 cm
Thermal conductivity of insulation material	0.044 W (mK)^-1
The density of the insulation material	200 kg/m^3
The thickness of the insulation material	0.05 m
Area of the absorber plate	mm
The thickness of the riser tube	1 mm