67
Table 18. Water sector's share in Tipaza's urban metabolism (2015)
Component
Required information
Data
Unit
Material
Water capacity mobilized
169 064 10
6
m
3
/day
Water supply from dams
105.2 Hm
3
Daily supply of drinking water
220 Liters.day
-1
. Capita
-1
Energy
Embodied energy associated with the pipeline manufacture
Length of the water distribution
network
100 km
Manufacturing energy
148.2 MtCO2eq
Built land
Number of dams supplying the
wilaya of Algiers
2 Unites
Total surface of dams
Boukerdane
Meurad
- Ha
4.1.5. Urbanization sector
This sector includes residential dwellings and individual houses. The material component
refers to the quantity of building materials. The operational energy component is the energy
needed for heating and cooling (e.g., electricity), and the embodied energy is used to
manufacture building materials (Appendix 4). Two methods estimate the built area: an
estimate based on the number of houses (Appendix 5) and an estimate based on satellite
imagery (ArcGIS). The second method includes, besides the residential areas, all the
infrastructure of the two wilayas (tables 19, 20).
Table 19. Residential urbanization sector's share in Algiers' urban metabolism (2015)
Component
Required information
Data
Unit
Material
Total housing inventory
Dwellings (1999-2015)
3 532 431
3 094 132
Unites
Individual houses
602 247 Unites
Energy
Embodied energy
Building materials
Concrete
Brick
Steel (concrete bar)
39.1
2.1
2.3
10
6
tonne
Building materials energy
Concrete
Brick
Steel (concrete bar)
60
35.9
14.2
9.84
10
6
MtCO2eq
Operational energy
Electricity consumption Clients
(Residential)
Total electricity consumption
Resulting CO2 emissions
1 939 896
2148.06
0.81
Clients
GWh
10
6
tCO2