Analysis of operation energy consumption and carbon emission characteristics of air conditioning systems in ultra-low energy consumption buildings in hot summer and cold winter regions
CHEN Junfeng
TIAN Shaochen
HE Zhiwei
LIU Haoran
SU Xing
Abstract：To clarify the air conditioning system solution suitable for ultra-low energy consumption buildings in hot summer and cold winter regions,based on EnergyPlus simulation,a certain ultra-low energy consumption office building in Shanghai is taken as the research object to comparatively analyze the operational energy consumption and carbon emission characteristics of multi-split systems,centrifugal chiller+gas boiler and air-cooled heat pump systems.The results show that the energy consumption per unit air conditioning area of each system is 22.47～29.00 kWh/(m2·a),and the air conditioning system accounts for 41.0%～47.2%of the total energy consumption of the building.The total energy consumption of multi-split systems is relatively low and the indirect carbon emissions are less.The proportion of carbon emissions from refrigerant leakage will rise from 33.8%to 46.0%as the carbon factor of the power grid decreases.
Keywords：ultra-low energy consumption buildingsenergy consumption simulationcarbon emissions
Publication Date：2025-12-25
Online Publishing Date：2026-01-26(First online date of this platform, not the publication date of the document)
Pages：4( 11-14 )