A photovoltaic panel of dimension 2 m × 4 m isinstalled on the root of a home. The panel is irradiatedwith a solar flux of G s = 700 W/m 2 , oriented normal Wthe top panel surface. The absorptivity of the panel to thesolar irradiation is α s = 0.83 , and the efficiency of conversion of the absorbed flux to electrical power is η = P / α s G s A = 0.553 − 0.001 K -1 T p where T P is thepanel temperature expressed in kelvins and A is the solarpanel area. Determine the electrical power generated for(a) a still summer day, in which T s u r = T ∞ = 35 ° C . h = 10 W/m 2 ⋅ K , and (b) a breezy winter day,for which T s u r = T ∞ = − 15 ° C , h = 30 W/m 2 ⋅ K . The panel emissivity is ∈ = 0.90 .
A photovoltaic panel of dimension 2 m × 4 m isinstalled on the root of a home. The panel is irradiatedwith a solar flux of G s = 700 W/m 2 , oriented normal Wthe top panel surface. The absorptivity of the panel to thesolar irradiation is α s = 0.83 , and the efficiency of conversion of the absorbed flux to electrical power is η = P / α s G s A = 0.553 − 0.001 K -1 T p where T P is thepanel temperature expressed in kelvins and A is the solarpanel area. Determine the electrical power generated for(a) a still summer day, in which T s u r = T ∞ = 35 ° C . h = 10 W/m 2 ⋅ K , and (b) a breezy winter day,for which T s u r = T ∞ = − 15 ° C , h = 30 W/m 2 ⋅ K . The panel emissivity is ∈ = 0.90 .
Solution Summary: The author explains the electrical power generated for a still summer day and the solar flux of irradiation.
A photovoltaic panel of dimension
2
m
×
4
m
isinstalled on the root of a home. The panel is irradiatedwith a solar flux of
G
s
=
700
W/m
2
, oriented normal Wthe top panel surface. The absorptivity of the panel to thesolar irradiation is
α
s
=
0.83
,
and the efficiency of conversion of the absorbed flux to electrical power is
η
=
P
/
α
s
G
s
A
=
0.553
−
0.001
K
-1
T
p
where
T
P
is thepanel temperature expressed in kelvins and A is the solarpanel area. Determine the electrical power generated for(a) a still summer day, in which
T
s
u
r
=
T
∞
=
35
°
C
.
h
=
10
W/m
2
⋅
K
,
and (b) a breezy winter day,for which
T
s
u
r
=
T
∞
=
−
15
°
C
,
h
=
30
W/m
2
⋅
K
. The panel emissivity is
∈
=
0.90
.
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