Using the ground as a heat sink in residential buildings during heat waves

2018 International Conference on New Energy and Future Energy System

Staszczuk, A.^1 ; Kuczyski, T.^1

Faculty of Civil Engineering, Architecture and Environmental Engineering, University of Zielona Góra, Prof. Z. Szafrana 1 st, Zielona Góra

65-516, Poland^1

关键词: Effect of temperature;    Experimental research;    Floor constructions;    Indoor air temperature;    Moderate climate;    Night ventilation;    Renewable energy source;    Residential building;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012034/pdf
DOI  :  10.1088/1755-1315/188/1/012034

来源: IOP

【 摘 要 】

Heat waves that are the result of climate changes have become an increasingly intense and therefore dangerous for human health and life. In the countries of moderate climate such as Poland, which have never before been experienced by such phenomena, residential buildings are usually free of overheating systems. In this paper authors propose a passive cooling method using the ground under thermally uninsulated floor slab as a heat sink for cooling the inside air during hot summer. The paper presents current knowledge of the authors gained as a result of theoretical analysis, fully confirmed by experimental research in two terraced rooms differing from each other only by the type of floor construction. Authors additionally presented the simulation results obtained for detached houses, which took also into account the effect of blinds in windows and increased night ventilation. The lack of ground floor thermal insulation significantly decreases the indoor air temperatures in the room with negligible "cold floor" effect. The duration of heat wave did not affect the effect of temperature reduction. Despite of the significantly difference in energy demands, it can be compensated by renewable energy sources.