Friday, 08/11/2024 | 10:02 GMT+7
In the framework of the
second International Exhibition on Energy Efficiency and Environment (Entech
Hanoi 2010), the Hanoi Industry and Trade Department and the
Actual situation and
potential
The results of a survey
carried out by the Ministry of Construction in coordination with the Hanoi
Energy Conservation Center and the Ho Chi Minh Energy Conservation Center show
that at the buildings where administrative offices are based, the amount of
electricity consumed by air conditioners accounts for 75 percent of the total
amount of energy consumption, and the remaining 25 percent is consumed by
lifts, lighting equipment and office equipment. At other buildings such as
trade centers, supermarkets and hotels, the amount of electricity consumed by
air conditioners accounts for 60-70 percent of the total.
At 94 buildings that were
surveyed in
Generally, the use of energy
in buildings remains wasteful and therefore the energy efficiency is still low.
Multi-storey buildings (office buildings, hotels and apartment buildings) are
the biggest energy consumers. The amount of energy consumption in the trade and
service sectors accounts for 10 percent of the total amount of energy
consumption in
Nguyen Cong Thinh, an
official at the Department of Science, Technology and Environment of the
Ministry of Construction, said, “In recent years, together with the growth of
the entire economy, construction companies obtained an annual growth rate of
12-16 percent. Production was expanded and the use of energy as well as natural
resources increased. Presently, energy consumption by the construction sector
accounts for 20-24 percent of the total amount of energy consumption
nationwide.”
Experts said that the
potential for energy conservation in buildings, including both old and new
buildings, is rather big.
For new buildings,
appropriate design combined with the use of energy-efficient materials and
equipment and qualified energy management officials can help save 30-40 percent
of energy consumption. For buildings that are being in use or are to be
improved, energy audits must be conducted so that appropriate energy
conservation solutions can be taken to save 15-25 percent of energy
consumption.
Effective solutions
Solutions for energy
conservation in buildings not only help reduce the expenditure on energy use
but also contribute to ensuring energy security, sustainable development and
environmental protection.
To reduce energy consumption
in buildings, it is necessary to take into account not only technical but also
natural factors such as green space in order to utilize natural light and air.
The simplest solution is to turn off electrical equipment when it is
unnecessary to use them.
At the mentioned above
seminar, experts and managers proposed many technical solutions for effective
energy conservation in buildings. They all agreed with the opinion that it is
necessary to build the energy consumption benchmark for office buildings, which
serves as the basis to compare and assess the consumption of energy in
buildings.
Sakamoto Yasuhiro from the
Heat Pump and Thermal Storage Technology Center of Japan said that the
technology of using heat pumps to save energy is being used widely and has
shown its good effects in
Presently, the Vietnam Green
Building Council (VGBC) is doing research to build the Lotus Energy System for
use in energy management at three buildings: the office of the United Nations
in
Yannick Lillet, the executive
director at VGBC, said that the Lotus Energy System will be built in accordance
with internationally recognized standards that have been adjusted to suit
actual conditions in
In 2008, the Ministry of
Industry and Trade coordinated with the Ministry of Construction, the Hanoi
People’s Committee and the Ho Chi Minh City People’s Committee to launch the
Energy Efficient Building Competition. In the past three years, the competition
attracted the participation of more than 100 buildings. Notably, five buildings
of
By Tran Linh