Field investigation of operation performance of green office buildings in China

In order to understand the actual energy consumption and indoor environment quality of green buildings during the operation process, selects a total of 31 green office buildings located in different climate zones and cities to compare their actual energy consumption and indoor environment quality (IEQ), as well as the ordinary office buildings in corresponding climate zones. Performs field investigation and long-term test of some typical indoor environment parameters, together with user subjective questionnaire survey. The study indicates that the energy consumption of green office buildings in different climate zones is lower than the local average energy consumption level, and close to the target value of energy consumption limit in the Standard for energy consumption of buildings. However, there are also some green offices with higher energy consumption. Generally speaking, the relationships of energy consumption values and the certification levels of green office buildings are not clear. In terms of the IEQ satisfaction, green office building users are more satisfied than conventional building users, with significantly difference for thermal environment and IAQ. On this basis, analyses the factors affecting the level of green office buildings’ energy consumption and IEQ to provide reference for further enhancing the performance of China’s green buildings in design and operation stages.