Energy efficiency renovation for existing buildings in Tangshan

Based on the thermal measurement and investigation of existing residential buildings in Tangshan, Hebei Province, confirms that the major renovation projects are building envelopes and heating systems. Determines the final scheme by comparing the two renovation methods for the staircase. Tests the retrofitted buildings and compares the results with the properties of a reference building, the results show that the renovation has good effects and can be used as a reference to the existing building renovation in cold areas.