Study on the Influencing Factors of Energy Consumption of Nearly Zero Energy Residential Buildings in Cold and Arid Regions of Northwest China

Jieyuan Yang (), Hao Yuan, Jingbo Yang and Ruilin Zhu
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Jieyuan Yang: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Hao Yuan: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Jingbo Yang: Department of Architecture Engineering, Gansu Vocational College of Architecture, Lanzhou 730050, China
Ruilin Zhu: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Sustainability, 2022, vol. 14, issue 23, 1-16

Abstract: There are many factors influencing the energy consumption of buildings in complex working conditions. In order to study the factors influencing the energy consumption of residential buildings with nearly zero energy in cold and arid regions of northwest China, factors such as the roof heat transfer coefficient ( K R ), exterior wall heat transfer coefficient ( K E ), ground heat transfer coefficient ( K G ), exterior window heat transfer coefficient ( K EW ), north window wall ratio ( WWR N ), south window wall ratio ( WWR S ), east west window wall ratio ( WWR WE ), building orientation ( BO ), and ventilation times ( VT ) are taken as the influencing factors in this paper. Using the orthogonal test, 135 building energy consumption calculation models were built in DeST, and the influence of 9 factors on building energy consumption in 5 types of regions (severe cold region A (1A), severe cold region B (1B), severe cold region C (1C), cold region A (2A), and cold region B (2B)) were analyzed. The conclusions are as follows: in the process of realizing nearly zero energy of residential buildings in the cold and arid regions of northwest China, the K R , K E , K G , K EW , WWR N , WWE WE should be reduced as much as possible in the five regions. The 1A,1B,1C regions should increase WWE WE and VT , with BO of about 15° east of due north and VT of about 5, 8, and 10 times per hour, respectively. The WWE S , BO and VT for the 2A region should be set at round 0.45, north-south, and about 10 times per hour, respectively. For the 2B region, WWE S should be set at around 0.45, BO around 15° east of due north, and VT as low as possible within the scope of the ‘technical standard for nearly zero energy buildings’.

Keywords: nearly zero energy building; building energy consumption; orthogonal test; multifactorial influence (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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