Research on Measurement and Optimization of an Old Building in Wuxi Based on Ultra-low-energy Consumption and Energy Saving Transformation

In order to improve the indoor heat and humidity environment of existing residences and reduce the total energy consumption of buildings, this paper takes an ultra-low-energy consumption reconstructed building in Wuxi as an example, and studies the influence of ultra-low-energy consumption reconstruction on the indoor heat and humidity environment in different spaces and the total energy consumption of heating and cooling through quantitative measurement and analysis and simulation verification with software. The analysis shows that the change range and fluctuation frequency of indoor heat and humidity environment can be reduced by increasing the thermal insulation performance of the external envelope, improving the air tightness of the building and reducing the thermal bridges, especially for the south room, and at the same time, the local heat accumulation in the room can be improved and the cooling and heating load of the building can be reduced.