The exterior wall of the building changes from red clay brick to gray extruded polystyrene board, and the external window is replaced by aluminum alloy window from single glass iron window, with better thermal insulation effect. Zhou Yaping, an engineer of Jiangsu Shuobai Construction Technology Co., Ltd., who was responsible for the project, said, "The reconstruction of exterior walls and windows can greatly reduce the load of indoor air conditioners. For the reconstruction of air conditioning systems, the original split air conditioners will be replaced by multi split air conditioners with better energy-saving effects, and the heat recovery efficiency will reach 60%. Air conditioners alone can save 50% of the original electricity costs."
Energy saving transformation also further tap the potential. For example, more than 60 sets of outdoor landscape lighting will be uniformly changed to solar lamps, and 3 solar water heaters will be added to the supporting canteen to reduce power consumption; Water saving transformation: water saving sanitary appliances are used to replace the original sanitary appliances, and the water efficiency level is reduced to Level 3.
What is striking is that roof greening is also set in this transformation to alleviate rainwater roof overflow, effectively protect the roof structure, keep the building warm in winter and cool in summer, and save energy consumption. The whole building is green and becomes a real green ecological building.
Vigorously promoting the energy contract management mode will not only reduce the dependence of reconstruction projects on government finance, but also promote the development of building energy conservation and high quality. However, the energy contract management mode has high requirements on the financial strength and technical strength of energy-saving service companies. Most of the active energy-saving service companies in the market come from Shanghai, Shenzhen and Chongqing, with only two or three local enterprises. The healthy growth of energy-saving service enterprises is crucial to the sustainable development of urban building energy conservation. In order to cultivate more local energy-saving service companies, we are currently testing the "green finance" financing method. Many banks are willing to provide loans for enterprises that reduce carbon emissions, among which Bank of Jiangsu can provide loans 20% lower than the benchmark interest rate.
According to the plan, in 73 Public buildings Among the energy efficiency improvement projects, the contracted energy management model covers an area of 2.8388 million square meters, accounting for 77.4%, which is far more than the original target of 40%.
After 3 years of practice, a set of unique experience has been gradually explored. The municipal government has set up a promotion group for the construction of key cities to improve the energy efficiency of public buildings to coordinate daily work. Through department cooperation and urban linkage, we will jointly promote the improvement of energy efficiency of public buildings. Establish a policy system for improving the energy efficiency of public buildings, and successively issue 23 working documents, including the Implementation Plan for the Construction of Key Cities for Improving the Energy Efficiency of Municipal Public Buildings and the Management Measures for Supporting Capacity Construction, to form a construction management system with clear management boundaries and clear responsibility subjects. Give full play to the leading role of key demonstration projects, such as Greenland Intercontinental Hotel, Suning Yigou Headquarters Building, Xincheng Building, etc., and achieve the effect of energy conservation, consumption reduction and comfort improvement through comprehensive transformation.
