Low energy building has an important significance in reducing energy consumption and achieving the target of reducing carbon emissions per unit of GDP for China. Integrated design is an important way in the design of low energy buildings. Through integrating the passive and active energy-saving technologies with architecture design reasonably, the balance between creating a thermal comfort environment and building energy saving can be achieved.

Integrated system for low energy useing building is an energy saving technology that active ways highlighted. The underground cooling systems obtain the required adjustment hot and cold water to adjust the indoor thermal environment by pumping small amount of power; the floor air supply system achieve the proper temperature and wind speed with less energy by using the control method of local indoor thermal environment; the dynamic ventilation wall improves the indoor radiation temperature by using the active ventilation to isolate the impact of outdoor thermal environment on the indoor one. The combination of the three methods above improves the thermal environment comfort of indoor working space.

The research is based on the study of the expansion projects of the College of Architecture and Urban Planning in Huazhong University of Science and Technology, which is the demonstration construction of the application of renewable energy building ratified by the Ministry of Finance and the Ministry of Construction in China. It will carry out the research mainly from the following aspects:

At first the author analysis the mechanism of three subsystems of the Integrated system for low energy useing building from related research and practical experience both domestic and international and gets clear the functional streamline of the system operation.

The author takes a long-term measurement on the climatic characteristics of the site, the indoor thermal environment of the construction, the envelope surface temperature of the building, the energy consumption of the building and some other related aspects, and researchs the characteristics by using comparative study method.

During the simulation study, the author tests the computer models with measured data, optimizes the design of buildings with integrated Integrated system for low energy useing building using the CFD simulation method, and studies the impact on the indoor thermal environment with different ways of air supply, materials of walls and tectonic pattern of the system.

Based on the experimental study and the simulation, the author takes a discussion on the design of low-power office buildings with integrated Integrated system for low energy useing building. In the aspect of system operation, the optimization of integrated system in building design are summarized, and several additional design ideas are suggested; while in the aspect of architecture design, the article probes into the impact of the integrated design on the Interior space of buildings and the tectonic design of retaining structures, and the design process of the low energy office building integrated with Integrated system for low energy useing building are described.

This paper aims at laying a foundation for the promotion and application of the design patterns of low energy buildings with Integrated Integrated system for low energy useing building; and meanwhile, the concept of integrated design provides a new thought for low energy building design.