Civil Engineering Reference
In-Depth Information
Table 9 Speci
c energy consumption less RES
Annual speci
c
consumption
Energetic
class
Speci
c energy
of building
Energetic class of
building (less RES)
A
B
Heating (kWh/m
2
year)
B
70
117
83.2
Cooling (kWh/m
2
year)
B
20
50
44.35
Hot water (kWh/m
2
year)
A
15
35
14.2
Illumination (kWh/m
2
year)
A
40
49
37.42
for power, the speci
c electricity annual consumption is obtained similarly by
dividing the annual consumption (Eq.
4
) to the TFA surface and resulting:
m
2
year
e
¼
37
:
42 kWh
=
ð
8
Þ
The energetic classes of building for every form of energy, expressed by the four
statistic indicators, are shown in Table
9
.
The evolution in time for each month of the speci
c
monthly consumption, is done with statistical indicators heating degree day and
cooling degree day. Degree day method determines the heat and cold monthly
consumption, per unit of TFA of building (relations
51
c energy, namely speci
-
54
in Chap.
“
”
). By processing the values of the speci
c
energy consumption given in the Table
9
, was obtained the speci
c monthly dis-
tribution of consumption, given in Table
10
.
Table 10 The monthly specific consumption of residence
Month
Heating
degrees
days
Cooling
degrees
days
Heat
q kWh
Cold
q
c
kWh
DHW
q
DHW
kWh
Electricity
e kWh
ð
=
m
2
Þ
ð
=
m
2
Þ
ð
=
m
2
Þ
ð
=
m
2
Þ
°
C-d
°
C-d
Jan
611
0
17.46
0.00
1.18
3.12
Feb
521
0
14.89
0.00
1.18
3.12
Mar
403
0
11.51
0.00
1.18
3.12
Apr
207
33
5.91
0.94
1.18
3.12
May
40
208
1.14
5.94
1.18
3.12
Jun
0
300
0.00
8.56
1.18
3.12
Jul
0
363
0.00
10.36
1.18
3.12
Aug
0
363
0.00
10.36
1.18
3.12
Sep
6
234
0.17
6.68
1.18
3.12
Oct
195
53
5.57
1.51
1.18
3.12
Nov
390
0
11.14
0.00
1.18
3.12
Dec
539
0
15.40
0.00
1.18
3.12
Annually
2,912
1,554
83.20
44.35
14.20
37.42
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