Buildings Energy Efficiency Analysis System Based On Thermal Parameters Measurement And On-line Reconstruction

According to statistics, China's building energy consumption accounts for about 30% of total energy consumption. As the tension between the energy supply and demand, reduce building energy consumption is not only an economic issue, but also a problem related to the national strategy, Therefore, the research on building energy efficiency is very important. In this paper, building energy conservation methods at this stage less than the physical model is proposed based on thermal parameters of field measurement and reconstruction method, trying to find the energy consumption of building law, make contribute to improving building energy efficiency.This paper introduces the background and significance of the subject,development of building energy efficiency,describes the traditional method of building energy efficiency research,the development of the numerical reconstruction and the application to building energy saving,then introduced a online monitoring for building diagnose. After that,to carry out building energy diagnose research based on the building model and real-time thermal parameters reconstruction.Then the paper design an online real-time monitoring system, describe system hardware and software,system implementation process and the system database design. Base on this, using methods of computational fluid dynamics model to simulate the thermal parameters field,then establish a heat transfer model to describe the room heat balance. Try to find the rule of building energy transfer and find a way to improving building efficiency.At last, this thesis summarizes the paper, pointed out the problems may exist and indicate what else we can do in following phase.