First and Second Law Evaluation of Multipass Flat-Plate Solar Air Collector and Optimization Using Preference Selection Index Method

Table 1

Input parameters.

Parameter	Symbol	Value	Unit
Solar radiation	I	1000	W/m^2
Absorptivity of glass cover		0.06
Absorptivity of absorber plate		0.95
Ambient temperature	Ta	306	K m/s
Wind velocity		1.5
Emissivity of glass cover		0.9
Transmissivity of glass cover		0.84
Emissivity of absorber plate		0.94
Emissivity of back plate	εb	0.94
Channel depth	H	15 to 30	mm
Collector length	L	1.5 to 2.5	m
Air mass flow rate	m	0.01 to 0.02	kg/s
Insulation thickness	ti	0.05	m
Thermal conductivity of insulation	ki	0.025	W/m K
Collector width	b	0.46	m