Structural and Thermal Analysis of Asphalt Solar Collector Using Finite Element Method

Table 3

Input details for thermal analysis in COMSOL.

Thermal insulation	Bottom surface insulated
Pipe wall condition	No slip boundary condition
Initial temperature	initial = 300 K
Heat flux input	800 W/m^2, general inward heat flux condition on top surface of model
Highly conductive layer	Boundaries of fluid domain selected layer thickness given as 2 mm, material copper
Convective heat flux	User defined heat transfer coefficient given as 20 W/m^2K on top surface, = 300 K
Surface to ambient radiation	User defined emissivity = 0.7, = 300 K
Water inlet temperature	inlet = 298 K
Inlet water velocity	8 mm/sec–50 mm/sec