This is what GlobGnd and GkVFLss described in PVsyst help
GlobGnd
Global incident on ground, below the system.
ReflLss
Ground reflection loss (albedo)
BkVFLss
Loss due to the view Factor for rear side
So I think GlobGnd is source energy for other parameters such as ReflLss and DiffGnd etc. That means value of GlobGnd should be the largest during these parameters.
But I processd some simulation and looked into details of results. I found that BkVFLss always larger than GlobGnd. Does anyone know why about this?
GlobGnd
DiffGnd
ReflLss
BkVFLss
kWh/m²
kWh/m²
kWh/m²
kWh/m²
January
26.1
9.94
13.06
18.8
February
41.5
13.76
20.73
35.4
March
70.9
23.17
35.45
67.1
April
98.7
27.04
49.34
96
May
125
28.2
62.51
121.1
June
124
29.7
62
119
July
122.1
32.43
61.07
117.3
August
103.1
31.35
51.56
99.9
September
75.3
24.16
37.64
72.3
October
52.8
18.7
26.41
47.2
November
30.3
12.88
15.13
23.6
December
20
10.03
10
14.4
Year
889.8
261.35
444.88
832.2
albedo=0.5 GlobGnd=889.8 BkVFLss=832.2
GlobGnd
DiffGnd
ReflLss
BkVFLss
kWh/m²
kWh/m²
kWh/m²
kWh/m²
January
26.1
9.94
5.22
30
February
41.5
13.76
8.29
56.7
March
70.9
23.17
14.18
107.4
April
98.7
27.04
19.74
153.6
May
125
28.2
25
193.8
June
124
29.7
24.8
190.4
July
122.1
32.43
24.43
187.7
August
103.1
31.35
20.62
159.9
September
75.3
24.16
15.06
115.7
October
52.8
18.7
10.56
75.5
November
30.3
12.88
6.05
37.7
December
20
10.03
4
23
Year
889.8
261.35
177.95
1331.5
albedo=0.8 BkVFLss=1331.5
