Experimental Investigation on the Feasibility of Using a Fresnel Lens as a Solar-Energy Collection System for Enhancing On-Orbit Power Generation Performance

Table 4

Material and thermooptical properties of the PMMA lens.

Property	Parameter	Value
Thermooptical property	Absorptivity ()	0.04
	Emissivity ()	0.04
Material property	Conductivity (W/m/k)	1.5
	Density (kg/m^3)	2210
	Specific heat (J/kg/k)	0.198