Coupled Heat Transfer Model And Simulation For Buildings

With the increasing development of science and technology, the shortage of energy can not be ignored. At present, the whole energy consumption of buildings is nearly 33 percent of the country's total energy consumption, ranking first. The rapid growth of buildings'energy consumption has brought tremendous pressure to our energy strategies for sustainable development. Therefore, studying the buildings'energy-saving measures and promoting them has become an urgent matter.Due to the unique geographical and climatic conditions, the energy consumption of buildings in area where it is hot in summer and cold in winter is extremely large, so that the study of the buildings in this area should be representative. Therefore, we select a residential district of Wuhan City as a target, then use the software FLUENT do a numerical simulation for it.Based on the prevailing winds in Wuhan's summer and winter, we do numerical simulations and give the temperature field and flow field for the residential district under the worst conditions. At the same time, combined with the solar radiation models which is built in the software, under different sunlight conditions, comparative analysis of energy consumption is given between the common materials and heat-preservation materials used for the envelope of buildings. Also the curves of average monthly energy consumption within half one year is given, as well as 24-hour energy consumption curves for a summer day. Through the analysis, the conclusion is that using the heat preservation materials can save more than 20 percent of the energy consumption in buildings.