Environmental Engineering Reference
In-Depth Information
Table 6.6
Electrical energy consumption of the test house for lighting and ventilation in the
base case
Electrical energy consumption
winter period (kWh/year)
Electrical energy consumption
summer period (kWh/year)
Total electric energy
consumption (kWh/year)
1,255
1,170
2,425
Table 6.7
Thermal energy consumption of the test house varying the energy class
Energy
performance class
Energy for heating
(kWh/year)
Energy for cooling
(kWh/year)
Total thermal energy
(kWh/year)
A
1,015
1,523
2,538
B
2,121
1,891
4,012
C
3,494
2,310
5,804
D
5,223
4,701
9,924
E
7,134
5,109
12,243
F
10,123
6,533
16,656
G
15,470
7,868
23,338
Table 6.8
Electric energy savings for a building upgraded from BAC efficiency class D to A
Total electric energy consumption
class D (kWh/year)
Total electric energy consumption
class A (kWh/year)
Energy savings
(kWh/year)
2,425
2,062
363
Table 6.9
Thermal energy savings for a building upgraded from BAC efficiency class D to A
Original energy
performance class
Tot thermal energy BAC
class D (kWh/year)
Tot thermal energy BAC
class A (kWh/year)
Energy savings
(kWh/year)
A
2,538
1,878
660
B
4,012
2,969
1,043
C
5,804
4,295
1,509
D
9,924
7,344
2,580
E
12,243
9,060
3,183
F
16,656
12,325
4,331
G
23,338
17,270
6,068
Each electric load is characterized by a load profile. The load profile is the
representation of the absorbed active power and of the related power factor, versus
time.
In the present study, according to the common practice for residential loads,
loads power factors have been considered constant in time and equal to 0.9.
