Calculation and Analysis of Carbon Emission of Ultra-low Energy Consumption Residential Buildings in Frigid Regions Based on the Emission Factor Approach

Ultra-low energy buildings for building energy efficiency development, compared with traditional buildings have obvious advantages.This paper simulates ultra-low-energy residential buildings in severely cold regions through Software PHES, and calculates the energy-saving results of ultra-lowenergy residential buildings.The carbon emission factor method is analyzed, and the carbon emission factor is calculated at different stages in the life cycle of the building.Select ultra-low-energy residential buildings in cold regions for modeling, input meteorological parameters, indoor environmental parameters and internal disturbance settings, building envelope, and combine with heat recovery system to simulate the operation of ultra-low-energy residential buildings in cold regions.Analyze the indoor and outdoor temperature and humidity values of traditional houses and compare them with those of ultra-low-energy-consumption houses to verify the advantages of ultralow-energy-consumption residential buildings.Calculate the energy-saving efficiency of ultra-lowenergy residential buildings.Using the 9# residential building of RuihuYunshanfu in Datong as a practical verification case, this ultra-low energy residential building has a total life-cycle carbon emission of 171.078 tCO/a, with a unit area carbon emission of 16.415 kgCO/ma.Compared to the energy-saving design standards implemented in 2016, the carbon emission intensity is reduced by 60.02%, fully confirming the carbon reduction benefits of ultra-low energy residential buildings in severe cold regions.