基于能源成本分析的居住建筑节能推广研究

居住建筑节能推广工作受制于初期投资的增加,但是从能源成本和建筑全寿命周期的角度分析,住宅节能效益不仅能消化初期投资的增加,还为全社会节约了大量能源.作者运用DeST-h软件分析某居住建筑实例,结果表明采取墙体、屋面增加保温层、窗体优化、改变窗墙比、增加水平遮阳等节能措施后,建造成本增加约为170元.m-2,投资回收期约为12年.在此基础上,作者建议建立一套住宅能耗标识体系以及相关监督机制,以增加住宅投资者与消费者之间对于节能的共识.

A study on applying energy thrift in residential buildings based on cost analysis of energy

Applying energy thrift measures in residential buildings is limited by the increase of initial investment.However,from the view of energy cost and life-cycle cost,we can find that energy-saving benefit can offset the increase of initial investment and save considerable amount of energy.In this paper,we use the software DeST-h to analyze a residential building project.The results show that the initial cost will increase by 170 yelan.m2 by taking several energy-saving measures,such as heat preservation measures on external wall and roofing,changing windows,changing window-wall ratio and adding horizontal sun-shading.And it takes about 12 years to recover the energysaving investment.The paper further proposes to establish a labeling system of energy consumption and take relevant intervention measures to promote better communication between investors and homebuyers and to popularige implementation of energy-saving residential buildings.