Life cycle carbon emission analysis of existing rural residential energy-saving transformation in eastern Hebei

In this paper, the carbon emission reduction rate model is established, and the proposed energy-saving transformation scheme is calculated and verified. The results show that the carbon emission of the rural residential building envelope after reconstruction can be reduced by 52.85% to 86.72% compared with that before reconstruction, and the carbon emission of material production of exterior wall and roof is greater than that of door and window. On the basis of the reconstruction of the building envelope of the rural residence, the payback periods of three heat source reconstruction schemes are analysed. The result is that the payback period of the energy-saving coal fired furnace is the shortest, followed by the air-source heat pump and the gas wall mounted furnace.