Applicability of different energy efficiency calculation methods of residential buildings in severe cold and cold zones of China

4th Asia Conference of International Building Performance Simulation Association

土木建筑工程

Zhang, S.^1^2 ; Liu, Y.^1^2 ; Yang, L.^1^2 ; Liu, J.^1^2 ; Hou, L.Q.^1^2

State Key Laboratory of Green Building in Western China, Xi' An University of Architecture and Technology, 31 Middle Section of Yanta Road, Xi'an, Shaanxi

710055, China^1

School of Architecture, Xi'An University of Architecture and Technology, 31 Middle Section of Yanta Road, Xi'an, Shaanxi

710055, China^2

关键词: Compare and analyze;    Dynamic energy consumption;    Efficiency calculations;    Residential building;    Residential building energies;    Residential building model;    Simulation software;    Steady state calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/238/1/012029/pdf
DOI  :  10.1088/1755-1315/238/1/012029

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

With the accelerated development of dynamic energy consumption simulation software, the accuracy and feasibility of steady-state calculation method for energy efficiency designs of residential buildings in severe cold and cold zones should be investigated. A six-story residential building model as a case study is introduced to be calculated and simulated by steady-state calculation method elaborated in 'Design standard for energy efficiency of residential buildings in severe cold and cold zones' and dynamic energy consumption simulation of EnergyPlus software respectively, in order to compare and analyze the differences between these two methods in five typical cities of China (Xi'an, Lhasa, Xining, Harbin and Hailar). The findings indicate that the index of heat loss of building obtained from both methods is different to typical cities with varied difference ratios. Especially in cities of high altitude, strong radiation and greater diurnal range, namely Lhasa and Xining, the difference ratio is as high as 43.83% and 16.63%. Thus, dynamic energy consumption simulation should be used for counting residential building energy efficiency instead of steady-state calculation method in above mentioned zones by analyzing main factors concerning the differences.