Investigation on residential building indoor environment in Xi’an and usage of air conditioners

Based on the tests and questionnaires of 100 residential buildings in Xi’an, analyses and researches the usage status of air conditioners, subjective sensation of occupants on thermal environment, comfort of natural ventilation rooms and air conditioned rooms, and noise and light environment. The results show that indoor thermal environment in summer is an important factor influencing comprehensive quality of residential buildings in such a zone.