The Study Of Complex Monitoring For Energy Transfer Based On Temperature Field Reconstruction

The building energy consumption take a large part of total primary energy consumption,about of 1/4 to 1/2, and the proportion will gradually increase with the economic development. In the current era of rapid urbanization, emphasis on building energy conservation will reduce energy consumption in civil and public buildings, and also it will make great contributions to long-term energy savings. The value of actual energy saving is often large deviation with design values, primarily due to actual weather conditions, building materials, the level manual adjustment.A series of energy efficiency testing and analysis technology have achieved which are important means to verify the building energy efficiency. But for the complicated building construction, with lots of limitations, existing test can no longer meet the needs of current building energy efficiency. Therefor a common, efficient building energy consumption monitoring system is the demand of building energy-saving industry and also the important development direction of building energy-saving technology.With the combine of the building energy consumption monitoring and digital reconstruction of temperature field, this paper propose a method of visualization monitoring in building environment temperature, base on summarizes of the test and analysis techniques at home and abroad in building energy. This method can achieve qualitative analysis of energy transfer between the architecture and environment ,also some research have done about quantitative analysis. Compared to traditional energy consumption monitoring techniques, which only focus on "Enter" building energy monitoring, statistics and analysis (mainly for electricity, gas consumption, consumption of heat or cold, etc.), this paper focusing on "input"&"output" of the energy measurement and analysis which is for temperature distribution and energy transfer between architecture and environment .In real-time digital reconstruction and visualization of the temperature field, this paper,base on the classical theory of numerical heat transfer and reasonable simplifying assumptions and amendments through the middle of the measuring point, achieve the construction of real-time visualization of temperature (on average every 10 seconds refresh temperature field )with less computing time and improve accuracy,. Software program give full play of the efficient computing of VC + +and good display at the graphical interface of Matlab, provide a good graphical interface displays and greatly shorten the time to develop a visual monitoring system.Based on the above ,a visual monitoring systems for building energy was developed, which was successfully apply on energy monitoring of a building model and the actual building room. The results can be a true reflection of the distribution of buildings temperature field. It also can real-time refresh temperature field, achieve long-period data collection, and the initial realization of the analysis and evaluation of building energy consumption.