Analysis on night ventilation effect of buildings with different energy consumption levels in Shenyang

• Published in: E3S web of conferences 2022-01, Vol.356, p.1066
• Main Authors: Xiaoxu, Li, Kailiang, Huang, Guohui, Feng, Danyang, Jing, Dan, Liu, Jiawei, Li
• Format: Article
• Language: English
• Subjects: Air conditioning; Air temperature; Buildings; Cooling systems; Energy conservation; Energy consumption; Green buildings; Indoor environments; Model accuracy; Night; Power consumption; Refrigeration; Thermal environments; Ventilation
• ISSN: 2267-1242; 2555-0403; 2267-1242
• DOI: 10.1051/e3sconf/202235601066

In this paper, the effects of night natural ventilation on indoor thermal environment of ultra-low energy consumption in a university in Shenyang were evaluated. The DeST software was used to establish the ultra-low energy consumption building model and the conventional building model, and the accuracy of the model is also verified experimentally. The indoor temperature, building power consumption of air conditioning system of the two models were calculated under the natural ventilation condition at night. The results show that under the optimal night natural ventilation conditions in July and August, the energy saving rate of ultra-low energy building refrigeration system is 15% and 46% respectively. The energy saving rate of conventional building refrigeration system is 14% and 44% respectively. The peak indoor temperature of the two types of buildings decreases with the increase of natural ventilation time at night. Both ultra-low energy consumption buildings and conventional energy consumption buildings adopt natural ventilation at night to help reduce indoor temperature, building power consumption of cooling system.