Overheating of residential buildings in the severe cold and cold regions of China: The gap between building policy and performance

Bo, Rui; Chang, Wen‐Shao; Yu, Yang; Xu, Yitong; Guo, Haibo

doi:10.1016/j.buildenv.2022.109601

Cited by 17 publications

(3 citation statements)

References 32 publications

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“…Based on their results, heating demand is expected to significantly decrease in cities like Harbin and Beijing in the future, while cooling demand will significantly increase in cities like Guangzhou and Chongqing [11]. In recent years, research has explicitly indicated that climate change poses a potential risk of overheating in residential buildings in severe cold and cold regions of China [12], which could result in an increase in buildings' consumption of and thus demand for cooling energy in these regions. To reduce winter heating energy consumption in severe cold regions of China, insulation is often increased to minimize indoor heat loss.…”

Section: Impact Of Climate Change On Building Energy Consumption Demandsmentioning

confidence: 99%

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Wang,

Shao,

Zhao

et al. 2024

Energies

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As the impact of climate change intensifies, meeting the energy demand of buildings in China’s cold regions is becoming increasingly challenging, particularly in terms of cooling energy consumption. The effectiveness of integrating phase change material (PCM) into building envelopes for energy saving in China’s cold regions is unclear. The aim of this study is to assess the effectiveness of PCM integration in building enclosures for energy efficiency in these regions. The research monitored and recorded indoor temperature data from typical residential cases from May to September. This measured data was then used to validate the accuracy of EnergyPlus22-1 software simulation models. Subsequently, the calibrated model was utilized to conduct a comparative analysis on the effects of PCM on indoor temperatures and cooling energy consumption across these regions. The results of these comparative analyses indicated that PCM can alleviate indoor overheating to varying degrees in severe cold regions of China. Focusing on north-facing bedrooms, applying PCMs reduced the duration of overheating in non-air-conditioned buildings in severe cold regions of China by 136 h (Yichun), 340 h (Harbin), 356 h (Shenyang), and 153 h (Dalian). In terms of cooling energy consumption, the energy saved by applying PCMs ranged from 1.48 to 13.83 kWh/m2. These results emphasize that the performance of PCM varies with climate change, with the most significant energy-saving effects observed in severe cold regions. In north-facing bedrooms in Harbin, the energy-saving rate was as high as 60.30%. Based on these results, the study offers guidance and recommendations for feasible passive energy-saving strategies for buildings in severe cold and cold regions of China in the face of climate change. Additionally, it provides practical guidance for applying PCMs in different climatic zones in China.

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Section: Impact Of Climate Change On Building Energy Consumption Demandsmentioning

confidence: 99%

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Wang,

Shao,

Zhao

et al. 2024

Energies

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“…Similarly, simulations by Camacho Montano et al [19] showed that overheating of the studied school buildings in the UK represents up to 27% of the occupied time. In the severe cold regions of China, an increasing amount of indoor temperature monitoring data warns of regional overheating risks [20,21], and the risk of overheating in residential buildings has been tentatively confirmed [22][23][24].…”

Section: Overheating In Severe Cold Regions Of Chinamentioning

confidence: 99%

Assessing the Potential of Integrated Shading Devices to Mitigate Overheating Risk in University Buildings in Severe Cold Regions of China: A Case Study in Harbin

Qin,

Liu,

et al. 2023

Energies

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Creating a comfortable indoor environment in education buildings is an important design objective. Climate change has resulted in rising summer indoor temperatures in the severe cold regions of China, and evidence of summer overheating risk in these regions has not yet been fully investigated. This study presents evidence of overheating in a university building in a severe cold region of China, discusses the potential of integrated shading devices for mitigating overheating, and proposes design ideas for the application of shading devices. Temperature monitoring and simulation were performed in a university building with natural ventilation located in Harbin, and various configurations of integrated shading devices were simulated using IES Virtual Environment software. The results demonstrate that 69% of classrooms were overheated; furthermore, south-facing classrooms could be overheated for up to 152 h during summer occupancy hours. This study finds that integrated shading devices reduce overheating hours by up to 59.2%. The design of appropriate parameters for shading devices can effectively improve indoor thermal comfort while maintaining daylight levels and controlling the increase in energy consumption. The methodology and results presented in this study offer a reference point and practical guidance for mitigating regional overheating, aiming to promote the improvement of regional standards and optimisation of thermal environments in the severe cold regions of China.

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“…Morey et al conducted a temperature monitoring survey of 122 houses to investigate the extent of overheating risk in summer and found that significant proportions of dwellings were uncomfortably warm in summer, especially in bedrooms and living rooms [ 13 ]. The researchers have concluded that the overheating risk will increase owing to climate change, especially for houses with highly insulated envelope [ 14 , 15 ]. A cold indoor environment in winter is also a concern.…”

Section: Introductionmentioning

confidence: 99%

Remote sensing of indoor thermal environment from outside the building through window opening gap by using infrared camera

Chen

Zou

Hao

et al. 2023

Energy and Buildings

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Overheating of residential buildings in the severe cold and cold regions of China: The gap between building policy and performance

Cited by 17 publications

References 32 publications

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Assessing the Potential of Integrated Shading Devices to Mitigate Overheating Risk in University Buildings in Severe Cold Regions of China: A Case Study in Harbin

Remote sensing of indoor thermal environment from outside the building through window opening gap by using infrared camera

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