Energy saving retrofit and operation performance of Office Building of Wuhan Urban and Rural Construction

Combined with the experiences of the project, discusses the design concept and appropriate technology of green retrofit for existing building. The energy efficient operation of the building mainly results from its effective design strategies: 1) Greatly reducing the energy consumption of air conditioning in transitional seasons and summer through optimal design for the building function such as reducing air conditioned area and actively using natural ventilation; 2) Effectively reducing the energy consumption of lighting through optimization design of plan; 3) Effectively improving the indoor thermal insulation and sunshade performances of building envelope, which improves the environmental quality as well as reduces the energy consumption during operation after optimal design of envelope; 4) Improving energy efficiency through optimal design of air conditioning.