The hot summer and cold winter zone is a transition zone between the cold zone and hot zone, sweltering in summer and chilly in winter, of which climate is worse. In recent years, with people's raised requirements on indoor living environments, the energy consumption of buildings in hot summer and cold winter zone has been greatly increased. However, the thermal performance of walls in this zone is worse, and thus a mass of energy is wasted. This paper thoroughly analyzes and compares some energy-saving wall materials and thermal insulation systems used in projects in general, according to the climate in the zone combined with the design standard for the walls of residential buildings in the hot summer and cold winter zone. The results indicate that reasonably selecting the applicable wall materials and thermal insulation systems according to the local energy consumption characteristics could optimize resource utilization and have a positive effect on energy efficiency.
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