Research Of Energy Consumption And Energy Saving Potential For Typical Public Building In Changsha

The energy consumptions in commercial and civil building become greater and greater, most of which contribute to run HVAC system. In order to lessen building energy consumptions, valid energy audit method and technology laws for building design must be developed based on much survey and investigation, which vary significantly with the climates in different regions.This paper presents some significant results of energy consumption of Changsha's typical public buildings, including shopping centre, hotel and office building. According to the operational records and measured data of HVAC system and other building equipments, energy audits for typical public buildings were performed, in which more emphasis on HVAC system were provided. In summary, the following work was carried out: 1) Analyze the feature of building energy consumption for each case (shopping centre, hotel and office building separately) considering its energy variety, energy usage distribution, building condition, operational schedule and outer air temperature, and then find out the main factors. 2) Take representative buildings for examples, and present detailed energy audit with effective methods. And then energy usage index was obtained individually, which indicates the energy conservation potentiality is great for each case due to unreasonable design, operation of HVAC system. 3) Propose feasible advice or innovation plan to save energy based on above investigationo.This work is of significance for the other studies on energy consumption of commercial building in Changsha or even China's transitional regions. Especially, the results of this paper are helpful for designing, operating and innovating HVAC system in public building.