A study of the passive cooling potential in simulated building in Latvian climate conditions

3rd International Conference on Innovative Materials, Structures and Technologies

Prozuments, A.^1 ; Vanags, I.^1 ; Borodinecs, A.^1 ; Millers, R.^1 ; Tumanova, K.^1

Riga Technical University, Riga, Latvia^1

关键词: Building envelopes;    Building orientation;    Climate condition;    Cooling of buildings;    Heat accumulation;    Low energy buildings;    Simulation analysis;    Solar heat gains;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/251/1/012052/pdf
DOI  :  10.1088/1757-899X/251/1/012052

来源: IOP

【 摘 要 】

In this paper authors point out that overheating in buildings during summer season is a major problem in moderate and cold climates, not only in warm climate zones. Mostly caused by solar heat gains, especially in buildings with large glazed areas overheating is a common problem in recently constructed low-energy buildings. At the same time, comfort demands are increasing. While heating loads can be decreased by improving the insulation of the building envelope, cooling loads are also affecting total energy demand. Passive cooling solutions allow reduction of heat gains, and thus reducing the cooling loads. There is a significant night cooling potential with low temperatures at night during summer in moderate and cold climates. Night cooling is based on cooling of buildings thermal mass during the night and heat accumulation during the day. This approach allows to provide thermal comfort, reducing cooling loads during the day. Authors investigate thermal comfort requirements and causes for discomfort. Passive cooling methods are described. The simulation modeling is carried out to analyze impact of constructions and building orientation on energy consumption for cooling using the IDA-ICE software. Main criteria for simulation analysis are energy consumption for cooling and thermal comfort.