Analysis Of Energy Consumption Status In Government Office Buildings And Study Of Energy Consumption Quota In Hunan Province

With the development of national economy, the building area in China is increasingly increasing and people's demands on indoor environment are increasingly arise, as a result, the building energy consumption is also increasing. Statistics indicated that building energy consumption accounts for about 30% of the total consumption of energy at present in China. In China, every unit of the large-scale public buildings energy consumption is about 10 times as high as that of ordinary residential buildings. The large-scale public building is of high operating energy consumption but with great potential of energy saving, which made it one of focal points to the promotion of national construction energy conservation.Among public buildings, the buildings which used by government offices and other related facilities consume national energy products and services significantly, making them the biggest energy users. The government agencies are not only the main consumer of energy consumption, but also the constitutors and executors of energy policy. So energy conservation in government agencies has an important meaning and the vital exemplary role for all the whole society. During the promotion of building energy efficiency, China used to seek an unduly energy-saving rate and adopt high technology. In fact, it is the actual buildings energy consumption data that should used as the factor to evaluate the effectiveness of building energy efficiency, so based on the energy consumption data, the quota management of energy consumption should used to evaluate the consumption and conservation level of energy.This paper launched a research on energy consumption status and energy-using quota in the government office buildings mainly aims at those in Hunan Province. Firstly, this paper analyzed methods of building energy consumption data collection, and then decided to collect building energy consumption data by the method of building energy audit. Selected 18 large government agencies office buildings in Hunan as audit samples and by using the equivalent electrical method, it was found out that energy consumption per unit area of such buildings ranged from 45.20 kWh/m2·a to 330.74 kWh/m2·a and the mean value was 159.09 kWh/m2·a. During the energy audit process, problems on energy-using management existed in government office buildings in Hunan Province were found, including the shortage of managerial systems of energy management and qualified operation management professionals, using office equipments with high energy consumption, the habit of opening windows which lowers the capacity of air conditioner, using electric water boiler with great in energy consumption, the problem with the failure of automatic control system etc. There were big differences among every building in terms of energy consumption per unit area. It is found that the main factors affect building energy consumption are operation of building operation management, adjustment and participation of users, control requirements of building indoor environment, etc.Then, this paper adopted secondary average method, regression analysis method and the software simulation method separately to calculate the quota according to statistic data, and different results were obtained, which are Qq,q=122.48 kWh/m~2·a,Qs=144.41 kWh/m~2·a,Qm,m=99.65 kWh/m~2·a. And the results indicated that different formulation method represent different quota level, second average method quota level value was 0.45. Regression analysis method of the fixed level value was 0.35. Software simulation method of the fixed level value was 0.35.The energy consumption quota range of government office buildings in Hunan province determined by three computational methods is from 100 kWh/m~2·a to 145kWh/m~2·a And adopting the same method, this paper obtained the architectural subsystems breakdown energy-using quota.Finally, based on energy consumption quota, the control aim of energy consumption in whole process of a building was divided into different index, including energy consumption index, the system performance index, equipment performance index, and administrative scheme in the various stages in building energy management was analyzed.