Environmental Engineering Reference
In-Depth Information
The energy-savings of industry m is composed of three items from Formula 4.2:
the technical energy-savings from the variation in the energy efficiency 6 of individ-
ual product type i , the last two items being the energy-savings from structural
change of industry m , one item being the energy-savings from the change of product
structure of industry m and the other item being the energy-savings from the change
of embodied GDP of product type i of individual industry m .
For the residential sector, it could be calculated by the following Formula 2.3 :
0
E R
G
E R
G
E Res ¼
G ðÞ
(2.3)
Δ
t
Where,
Δ
E Res refers to the energy-savings for the residential sector
E R
G refers to the ratio of residential energy consumption of GDP
t refers to the forecast year
0 refers to the base year
2.2.3 Potential Energy-Saving Analysis
The contributors and roles in realizing the energy-savings target for the 11th FYP
were analyzed by domestic agencies 7
in early 2011 based on above-mentioned
methods.
According to their research, accumulated energy-savings was about 638 Mtce.
Structural adjustment contributed 28.8 % of total energy-savings; the rest came
from technological improvements (see Fig. 2.11 ).
For energy-savings through structural adjustments, the contributor from the
industrial structure optimization stood at only 7.9 % (see Table 2.5 ), since the
share of the secondary industry only declined by 0.5 % in 2010 compared with 2005
(see Fig. 2.12 ).
Meanwhile contributions from the structural adjustment of internal secondary
industry, the internal tertiary industry and the internal major industry subsector are
significant: 26.6 %, 29.6 % and 24.7 % respectively.
For energy-savings through technical improvements, the decline of energy
consumption per unit output of major energy-intensive industrial products such as
iron and steel, cement, electricity, chemical products, paper and so on is the largest
contributor, accounting for 65.5 % of total technical energy-savings.
Accumulated energy-savings from improvements of energy efficiency of the
above-mentioned industrial products amounted to 297.8 Mtce.
6 i.e., energy consumption per unit production.
7 Energy Research Institute (2011), Study on energy-saving evaluation of 11th FYP and perspec-
tive on potential energy-saving for 12th FYP, internal report.
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