Research On Energy Consumption For Residential Building Plan In Chong Qing

With the rapid development of the national economy and city construction, the energy demand increases very quickly. Building energy consumption amounts to about one fourth of our nation's primary energy consumption. The energy consumption of the residential building is the important constitution of the civilian building's energy consumption, compare to the public building, the individual energy consumption is lower, but the total energy consumption is larger. Therefore, the building's energy efficiency especially the residential building's energy efficiency should be given much more consideration and be researched as an important task.Before, when the buildings were going to construct, it was beginning to building energy save. This approach is so bad that to increase the construction cost. Therefore, it is necessary to research the building's energy efficiency in the Chongqing's building planning stage, include: building shape coefficient, building orientation, building allocation plan.At the fist, this article analyses the influences between building shape coefficient and building's energy efficiency by simulating energy consumption of DeST-h:①Analyzing the influences between building forms and shape coefficient in order to offering some references to architects during the building plan design. The results show that shape coefficient of circle model and polygon model must be less than other polygon model's, and the trigon model is the worst.②Analyzing the influences between building depth X, shape coefficient and the relations with energy consumption. The results show that building depth X have similar impacts on shape coefficient: with the infinity of building depth X, shape coefficient will be minishing to some extremism.③Finding the influences in story height h/building height H, shape coefficient and the relations with energy consumption. The results show that story height h and shape coefficient performance as the negative linear correlation and the more of stories, story height h plays less impaction in shape coefficient, while shape coefficient will be more important to building energy consumption. It also indicates that shape coefficient and energy consumption will minish with the increasing of building height H, and shape coefficient plays more important role in heating energy consumption than in cool energy consumption. ④Taking garden houses, villas, united buildings and setback building for example to analyze the influences in shape coefficient and building energy consumption. It shows that, the more concavo-convex of building vertical planes, the shape coefficient will be larger.Secondly, this article analyses the influences between duplex construction and building's energy efficiency by simulating energy consumption of DeST-h, the result is: The building's energy efficiency of duplex construction is more than the common building.Thirdly, this article analyses the influences between exterior-protected construction and building's energy efficiency by simulating energy consumption of DeST-h, and finds out the best material that can reduce building's energy efficiency. Finally, this article analyses the influences between building orientation and building's energy efficiency by simulating energy consumption of DeST-h, the result is: when the building is south orientation, the building energy consumption is lowest. The best orientation for chongqing region is south by east 15°to south by west 15°.