Guangzhou recently decided to select some government agencies and large public buildings to conduct energy audits to find building energy conservation potential. Director Chen Zhilong of the Urban and Rural Construction Committee of Guangzhou City told the China Energy News that "this year, a total of 35 state offices and large public buildings such as the Guangzhou Land Tax Building will be identified as energy audit targets. The audit work is currently underway and has been completed. The energy audit report of 15 buildings including Guangzhou Municipal Building is expected to complete the energy audit at the end of November."
Large office and public buildings have great potential for energy saving
Chen Zhilong, the Propaganda and Education Office of the Urban and Rural Construction Committee of Guangzhou, told the author: “The energy-saving potential of buildings mainly reflects three aspects. One is energy management mode and user behavior. For example, power equipment such as elevators adopts new energy recovery elevators. Advanced control and management methods can reduce energy consumption by more than 20%. Secondly, the air conditioning system is complex, air conditioning system energy consumption accounts for 35%-60% of total energy consumption, and energy saving potential is large. Through the transformation of key equipment and operation management Improvements, air conditioning power consumption of large public buildings can be reduced by 30% on the current basis. Finally, the lighting system, although most users have replaced or partially replaced energy-saving lamps, but the lighting power density in some areas is far greater than the standard value. The lighting system can be reduced by 10%-20% on the current basis."
According to the introduction of the Guangzhou Urban and Rural Construction Committee, at present, energy audits and energy-saving renovations are mainly carried out for government offices and large public buildings, because the energy consumption level of such buildings is several times or even several times that of ordinary buildings, and the overall energy utilization. The efficiency is far lower than that of developed countries, and the energy saving potential is large.
Building energy saving “weight loss†needs to be carried out step by step
The relevant person in charge of the Propaganda Department of the Construction Committee compared the energy-saving image of the building to “weight lossâ€. First, it is necessary to carry out building energy consumption statistics to find out the cause of “obesityâ€; then conduct an energy audit to diagnose “bad fat habits†and “obesity levelâ€; finally, targeted “weight loss†for specific “obesity†parts. .
Chen Zhilong emphasized that it is necessary to vigorously promote the construction of building energy consumption monitoring system, provide data support for determining the building energy quota and formulating the building energy over-quota mark-up system, and guide the office building and large-scale public building energy-saving management and energy-saving renovation. Construction of the project. On the basis of energy audit work, the energy-saving renovation of existing buildings will be gradually carried out. It is initially estimated that if effective measures are taken, existing government office buildings and large public buildings can reduce energy consumption by about 30%.
In combination with energy-saving work, Guangzhou City has also achieved great results in the promotion and application of new wall materials. It has gradually developed towards light, heat preservation and heat insulation, and developed aerated concrete blocks, ordinary concrete blocks and light aggregates. Multiple varieties such as concrete blocks. In 2008, the production of new wall materials in Guangzhou reached 3.273 billion standard bricks, the application of new wall materials reached 1.766 billion standard bricks, saving 2913 mu of land resources, saving 110,000 tons of standard coal, reducing emissions of sulfur dioxide by 2,189 tons, new wall The application rate of the material is about 92%.
The government needs to increase financial support
Wang Hengtao, the first generation of the China-US Clean Energy Forum in China, said to the author: "Building energy conservation has great potential. According to statistics from relevant departments, building energy consumption accounts for nearly 40% of the country's total energy consumption. China's buildings consume more energy than foreign countries. The energy consumption is two to three times higher. Building energy saving is not only a simple aspect of turning off the lights and air conditioning to lower the temperature, it is related to people's lifestyle and understanding of energy saving. At the same time, the design and construction of buildings There are also related requirements, such as insulation of exterior walls, indoor lighting, etc."
When Chen Zhilong introduced the situation of comprehensive energy conservation in Guangzhou, he stressed: "The task of carrying out comprehensive energy conservation work is very heavy and the resistance is also great. First of all, the comprehensive energy conservation awareness and initiative of the society is still insufficient, and it is necessary to continue to increase publicity; secondly, It is necessary to further strengthen the local legislation on building energy conservation and improve the supervision level of the whole process. Finally, the government needs to increase financial support for building energy conservation."
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