Steel building construction is an important aspect of architecture system in the world. With the rapid development of the steel industry, contemporary steel housing in many developed countries presented dominant position in the market. In this paper, the advantages of steel structure in sustainability, strength, appearance and other aspects are summarized. Also, the application in residential buildings are analyzed, especially in green buildings. Furthermore, a study on the construction of steel building of I-Magic Cube in Shandong Jianzhu University, China are investigated and discussed. And in the example of Shandong Jianzhu Universitys "I-magic Cube", the construction of steel buildings and steel housing and other aspects are analyzed and discussed.

This paper analyzes architectural concept of the use of double envelope enclosure, and expounds the advantages of the energy efficiency in the construction of double-envelope enclosure. After parsing the key points of the high-rise building energy efficiency design, which leads to the use of double envelope enclosure in the energy-saving design of high-rise buildings. Including the thermal insulation of double doors and windows which reduce the energy consumption of the air conditioning equipment; the ventilation ability of double-envelope enclosure which reduce the power consumption of mechanical ventilation; thermal insulation and sound insulation performance of double-envelope floor and roof which improve the indoor comfort. As a result, the use of double envelope enclosure in the energy-saving design of high-rise buildings is worthy of promotion.

This paper investigates heat transfer enhancement of the microencapsulated phase change material (MPCM) suspension. The specific heat of tested sample is measured by A Differential Scan Calorimeter (DSC) analysis. The corrected factor of sample is obtained by theoretical analysis and DSC measurement. The thermal conductivity is obtained by theoretical analysis and verified by previous works.

Indoor fresh air distribution, temperature stratification and temperature distribution are consider to be the essential indicators when comes to evaluation of the comfort level for internal ventilation environment, particularly for natural ventilated space as target office building. It can be identified that the targeting building has been well designed in the respect of natural ventilation strategies where both cross and stack strategies have been adopted, but it is also obvious that under combined buoyancy and wind driven mode alternative problems appears.

A solar district heating and water heating integrated system has been designed and installed in a 5000m2 residential quarter. The integrated system uses vacuum glass tube solar collector to collect solar radiation energy, and uses water as heat medium. Solar energy provides almost 50% of the total heating energy consumption in winter. The inadequate part of energy can be provided by a steam heater which steam is provided by exhaust steam of the turbine from a power station nearby. The integrated system is operating automatically according to the solar radiation and working condition. Low-temperature floor radiation system is used as indoor heat radiator. At the same time, the system can provide 24h hot water supply. The integrated system has operated for 3 years, saves a large amount of energy, and receives good profit in both economical and environment.