Benefit analysis of building energy-saving technologies based on the full life cycle cost
MENG Xiangzhen
Abstract：Establish a full life cycle cost model and evaluation system for building energy-saving technologies,explore the connotations of passive and active building energy-saving technologies as well as new energy technologies,and construct carbon-reduction and incremental cost calculation models for relevant technologies.Taking a large-scale commercial complex as the research object,conducta benefit analysis of building energy-saving technologies based on the full life cycle cost technology framework.The results show that after the implementation of relevant building energy-saving technologies,the comprehensive energy consumption of buildings has decreased by approximately 45.6%.The energy-saving rates of the introduced intelligent air-conditioning system and lighting system can reach 35.4%and 26.4%,respectively,with obvious energy-saving benefits.After dynamic payback period calculation,the payback periods for improving the thermal performance of exterior walls and windows by 10%and for building a rooftop photovoltaic system are 7.2 a,8.5 a,and 9.5 a,respectively.The introduction of intelligent control systems for air conditioning and lighting results in a dynamic payback period of approximately 3.0 a.
Keywords：building energy-savingfull life cycle costbenefit analysisinvestment recoverytechnical optimization
Publication Date：2025-07-25
Online Publishing Date：2025-09-15(First online date of this platform, not the publication date of the document)
Pages：4( 90-93 )