Based on the effective implementation of energy conservation and emission reduction measures, combined with the application of three civil building projects in Wuhan, this paper regularly collects and analyzes the energy consumption data and water resource utilization data of the three areas (construction, office and living) of the project during the construction process, and obtains the energy consumption and water resource consumption data per 10000 yuan of output value in the building production process, It has certain guiding significance for further energy conservation and emission reduction during the construction of similar projects.
The third project is a modern science and technology building integrating office and commerce, with a construction area of 82000 m2, three floors underground, six floors above ground podium, and a 31 storey single building.
Table 1.3-1 Sample Table for Water Resources Data Collection and Analysis Table 1.3-2 Sample Table for Energy Consumption Data Collection and Analysis According to the requirements of “regular energy consumption measurement and accounting for major energy consuming construction equipment” in the section of “Energy Conservation and Energy Utilization Evaluation System” in GB/T50640 Assessment Standard for Green Construction of Building Projects, the above three representative projects in Wuhan are selected, and the energy consumption data of the third area of the project are based on the basic construction The main structure construction, installation and decoration construction are counted in three different stages.
The contract cost is 560 million yuan, and the construction period is 720 days.
At present, the research in China mainly focuses on energy consumption in a narrow sense.
The generalized energy consumption refers to the energy consumed in the production and transportation of building materials, building construction and daily use of buildings.
Energy consumption for production and transportation of building materials and building construction process is defined as initial energy consumption for construction [2].
At present, China’s focus in the field of building energy conservation is mainly on the design stage and operation stage of buildings.
However, the energy conservation research in the manufacturing of building materials and building production and construction stage is still in a slow development stage, especially in the energy conservation research involving the production and construction stage.
1.3 The principle, cycle and analysis method of statistical analysis of energy consumption for green construction are determined in Table 1.3-1 and Table 1.3-3 by visiting the site and communicating with site management personnel in accordance with the Guidelines for Green Construction and the Evaluation Standards for Green Construction of Building Engineering, based on the principle of wide coverage and strong representativeness.
1) The enterprises where the projects are located have formulated strict green construction objectives, management specifications, energy conservation standards and other relevant systems, and have prepared green construction organization design (special scheme for green construction) and other relevant planning documents before the implementation of each project; 2) When planning the general layout of each project, the principle of “separation of three areas” shall be strictly followed, and energy consumption statistics shall be carried out for the three areas respectively; 3) Procurement and installation of water-saving appliances for temporary construction projects, equipment and lighting fixtures that meet the requirements of green energy conservation; 4) Each project is designed with rainwater collection system, reclaimed water recycling, special power supply for cooling equipment and relevant time limited use measures; 5) Air energy water heaters and special boiled water supply equipment shall be installed in the living area to ensure 24-hour hot water and boiled water supply in the living area; 6) Carry out green construction disclosure and publicity and education of relevant environmental protection and energy conservation requirements for relevant personnel of subcontractors; 7) Classify construction and domestic waste, and recycle and recycle as much as possible.
Key words: building construction energy consumption; conserve energy ,reduce emissions; Energy consumption per 10000 yuan of output value; Construction process; The introduction of green construction 0 There are two definitions of building energy consumption in broad sense and narrow sense [1].
At the same time, the winter and summer energy consumption in living quarters and office areas are separately counted and analyzed.
Analysis of building construction energy consumption based on energy conservation and emission reduction measures Abstract In the research of civil building life-cycle energy consumption, the main content of current research in China is building operation energy consumption, and the research on building construction energy consumption is relatively small.
1 Project introduction and construction energy consumption data collection 1.1 Project introduction Project 1 is a large commercial complex, with a building area of 175800 m2, one floor underground, 2-3 floors above the ground podium, 7 single buildings with 15 to 18 floors.
Energy consumption for building construction can be divided into energy consumption for initial construction (electric energy consumed in construction area), energy consumption for construction supporting facilities (electric energy consumed in office area and living area) and energy consumption for waste disposal.
1.2 Relatively unified energy conservation and emission reduction measures are taken for the above projects.
The narrow sense of building energy consumption refers to the energy consumed in the daily use of buildings, that is, the energy consumption of building operation.
The energy consumption per 10000 yuan output value is taken as the benchmark reference for analysis, creating very favorable conditions for the comparative analysis of horizontal and vertical data in the feasibility and various stages of the project..
Based on three civil building projects in Wuhan, this paper regularly collects and analyzes the energy consumption data and water resource utilization data during the construction process, and obtains the energy consumption and water resource consumption data per 10000 yuan of output value during the building construction process, which has certain guiding significance for further energy conservation and emission reduction during the construction of similar projects.
The contract cost is 396 million yuan (some projects have not been implemented), and the construction period is 720 days.
The second project is a comprehensive and highly supporting medical and nursing project, with a building area of 74900 m2, one floor underground, 4-6 floors above the ground podium, and two 19 floor single buildings.
Recent research shows that the initial energy consumption of building construction can account for 23% of the energy consumption in the whole life cycle of the building [3], and even up to 40%~60% in low energy consumption buildings [4].
With the promotion and implementation of green construction, the code of conduct and system for building green construction with enterprise characteristics are constantly improving, especially the collection and collation of data during the construction process and the accumulation of energy consumption and other data, which create conditions for the formulation and management of enterprise quotas, provide real-time data support for the formulation of consumption plans for enterprises’ hydropower and fine management, and are also the cornerstone for enterprises to implement comprehensive list quotation.
The contract cost is 187 million yuan, and the construction period is 540 days.