According to the actuality of the protection of the earth fault in urban and rural residence,the functions of residual current operative device(RCD) and local equipotential bonding in different earthing systems were analyzed and the feasibility of selective fit with the RCD protection was discussed.

Investigates the urban and rural residences by sampling, and obtains some results about the indoor thermal environment and energy consumption of residences.

Primary study on energy efficiency design to rural dwellings in North Shandong;

With the development of rural economy,the number of rural dwellings speeds up,but the excessive energy consumption in construction and utilization hindered the energy efficiency development of our country.

The article discusses the construction conditions of urban residence,rural residence and their furnishings of Beisong Dynasty from residential system and description in the painting of the dynasty,which to lay the basic pattern for residential features at later stage of feudal society.

S of different rural residence with different H in north Shandong are resolved.

Energy conservation design of village residence in severe cold regions;

The diagnoses for indoor thermal and humidity environment of village residence in Songyuan city in Jilin province;

length,width,highand underside perimeter) of shape coefficient and the building plane shape on village residence energy conservation design is analyzed.

Energy-saving Design of Exterior-protected Structure of Rural Housing in Cold Areas;