Many experts in the construction industry that the use of waste energy and resources in construction work in Vietnam since the year after the cause.
According to Deputy Chief of Science and Technology (Ministry of Construction) Nguyen The Hung, in conditions when the current fuel prices, electricity on a high, the energy to become more urgent. The use of waste-loss resources is decreased, causing negative impacts to habitats.
TS. Le Thi Bich Thuan, Vice Director of Institute of Architecture – Urban Planning and Rural (Ministry of Construction), said that to have a home energy efficiency, must consider the ability to spend less energy wastage Best. For example, standards for materials manufacture must achieve the required anti-solar radiation, heat transfer through the outside walls and roof, insulated with design layout window and door …
Data of the Ministry of Construction showed that the growth of the business construction reached 12 – 16% a year, pulling the total energy consumption in construction sector is estimated to occupy about 20 – 24% of the total national energy.
Also according to Mr. Hung, if managed well design phases of project construction by the use of energy effectively, it will save from 20 – 30% energy consumption in this region.
It is the architectural design buildings not suitable in a tropical humid; only use the material accidentally (Fan, insulated walls, windows ..); not required to use technology device in the direction of exploiting renewable energy, using equipment on the highly effective (conditioners, refrigerators, lighting system …) and energy management, the information systems …
Building a “green building” is required
However, according to her, the trend in construction in Vietnam now is to use building materials and new technologies such as glass, concrete subject to high light … to the high-rise building. “Users as well as standards for this material was not up to the climate of Vietnam to take advantage of the wind God and the natural light,” she said.
Le Thi Bich Thuan calculation and construction cost of “green buildings” only increased 1% compared with the buildings built by the same type of normal. However, the cost will increase rapidly due to the return of energy efficient building.
“We should not be considered architecture green energy efficient architecture with other normal,” she quoted words of Mr. Rob Watson – Chairman ranking system of green Leeds (England). “Only good architecture and bad architecture. If not green, it is not good architecture. ”
TS. Also of use in Tô Giang (China), the entire area of investment for housing, industrial implementation of new 50% target saving energy but saving 500 KW power. Available in English, in the office building equipment working radiator big, they use the system cooling naturally help clean the air in on summer, but warm in winter because of hoarding.
According to he expected the end of 2008 the Government promulgated Law will save energy countries, including saving energy in buildings. Under the laws, when designing the required design must comply with all provisions of law save energy, if not the is not allowed to execute.
At only a few cement factories such as Ha Tien 2 (Kien Giang), Cong Thanh (Nghi Son, Thanh Hoa) to implement. With this technology, gas a cement factory can provide up to 1 / 3 of electricity consumption for the factory.
Share this point, TS. Nguyen Quang Cung, Director of Building Materials (Ministry of Construction) for most countries in the world have their “home form” save energy, but in Vietnam to date have not yet hề.
Vietnam did not have specific, exactly what types of materials that are used to reduce the supply of energy. Also missing are the specific instructions on how to select materials for use in the urban and architectural criteria in order to achieve energy savings. Specifically, investors have not set items accounting for the design of the design for saving energy.
On the other hand, institutional management and encourage the use of energy saving as well as handling the fine design does not guarantee savings required in Vietnam have not. Meanwhile, countries around the world considered the default, use materials save energy to build “green buildings” is required. They have to treat the fine environmental pollution and waste energy strictly.
Also, to save energy right from manufacturing construction materials, the Ministry of Construction will guide all of the manufacturing of cement to get gas (excessive heat) from funnel put through filters get materials for production, and run hot air generators.
( According to sources vneconomy.vn)
