Article
Thermodynamics
Jiahui Yu, Yu Dong, Yuhan Zhao, Yang Yu, Yang Chen, Haibo Guo
Summary: Due to global warming, residential buildings in severe cold and cold regions of China face overheating risks, which can seriously affect people's comfort and health. This study aims to reveal the overheating risk and verify the effectiveness of using PCM to alleviate overheating in these regions through simulation.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Jalal M. Jalil, Salih M. Salih
Summary: This paper analyzes the performance of double glazed windows filled with paraffin wax in Baghdad, Iraq, aiming to evaluate the improvement in thermal comfort. The results show that the temperature of the double glazed window is significantly reduced compared to the single glass window on different floors, with reductions of 8, 6, and 5 degrees Celsius.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Yacine Khetib, Abdullah Alhumaidi Alotaibi, Abdullah H. Alshahri, Muhyaddin Rawa, Goshtasp Cheraghian, Mohsen Sharifpur
Summary: This study simulates the heat transfer processes in a double-glazed window containing phase change material in the frame. The results show that changes in window angle and distance between glasses affect heat loss and PCM melting time.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Anna Staszczuk, Tadeusz Kuczynski
Summary: This study compares the effects of PCM and reinforced concrete on the summer thermal performance of existing buildings, finding that reinforced concrete improves thermal performance significantly, while PCM may solidify during heat waves. It may not be possible to plan an optimum range of PCM melting temperatures effective throughout all summer months in a building without air conditioning.
Article
Energy & Fuels
Lucrezia Ravasio, Rajnish Kaur Calay, Raymond Riise
Summary: This study evaluates the thermal performance of a triple-glazed glass window with a phase-change material (PCM) and compares it to a traditional triple-glazed window with air gaps. Results show that integrating a PCM can enhance thermal performance in summer, while performance in spring and autumn is influenced by the type of paraffin used. Winter thermal performance remains unaffected by PCM integration.
Article
Engineering, Multidisciplinary
Ahmed M. Bolteya, Mohamed A. Elsayad, Adel M. Belal
Summary: Recent research has focused on using various media in glazing cavities to reduce heat transfer in buildings. The study compared the thermal efficiency of a Phase Change Material (PCM) glazed unit with air-filled unit in a dry arid region, and found that PCM has a significant effect on room temperature, improving thermal performance parameters up to a certain thickness before reversing the trend.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Lei Quan, Ziyue Pan
Summary: Due to excessive energy consumption, the importance of using renewable and environmentally friendly resources, such as solar energy, is emphasized. This study utilized molecular dynamics simulation to investigate the thermal behavior of glass filled with ethylene glycol and exposed to solar radiation. The results demonstrated optimized atomic and thermal behavior of the glass under the influence of solar energy, with increased density, velocity, and heat flux.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Review
Construction & Building Technology
Chun Yin Siu, William O'Brien, Marianne Touchie, Marianne Armstrong, Abdelaziz Laouadi, Abhishek Gaur, Zahra Jandaghian, Iain Macdonald
Summary: This paper provides a critical review of past modeling and simulation research on quantifying the thermal resilience of buildings and discusses future research needed to enhance practice and building codes. The paper defines a framework for building performance simulation-aided resilience quantification and reviews topics such as heat stress, resilience metrics, model assumptions, simulation tool capabilities, weather file selection, and visualization methods. The paper concludes with a discussion on fundamental research and future tool development needed to accelerate the transition from research to practice.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Christoph Schunemann, David Schiela, Regine Ortlepp
Summary: Residents' individual window ventilation behavior significantly affects the overheating risk in dwellings, with fully opening windows and room doors reducing the risk, while tilted windows are inadequate. Grunderzeit buildings are more affected by ventilation profiles compared to large panel construction buildings, which exhibit higher heat resilience. Meteorological conditions, such as tropical nights, can also significantly impact the efficacy of passive cooling through window ventilation.
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Rajat Gupta, Alastair Howard, Mike Davies, Anna Mavrogianni, Ioanna Tsoulou, Nishesh Jain, Eleni Oikonomou, Paul Wilkinson
Summary: Summertime overheating in care settings is identified as a key risk and research priority. The study conducted continuous monitoring and dynamic thermal simulation in two London-based care homes, showing that night-time ventilation is the most effective passive cooling solution in the current climate. Balancing passive and active measures is crucial for improving thermal comfort and reducing cooling loads in the future.
ENERGY AND BUILDINGS
(2021)
Article
Thermodynamics
Francois Gloriant, Annabelle Joulin, Pierre Tittelein, Stephane Lassue
Summary: An experimental set-up of triple-glazed supply-air window was developed to characterize the window's thermal performance without solar radiation. The use of fluxmeters provided more accurate measurement of heat transfers, leading to the correct estimation of heat transfer coefficients by empirical evidence. Uncertainty analysis and comparison with a numerical model were conducted to validate the validity of numerical model assumptions with respect to the real conditions of experimental set-up.
Article
Construction & Building Technology
Ruey-Lung Hwang, Pei-Lun Fang, Wei-An Chen
Summary: This study investigates the impact of solar radiation on indoor thermal comfort through field measurements, focusing on glass properties and spatial positions. The results show that radiation asymmetry leads to partial thermal discomfort, and the SHGC value of glass plays a critical role in thermal comfort.
BUILDING AND ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Guangpeng Wang, Yuxin Ma, Shu Zhang, Dong Li, Rong Hu, Yingming Zhou
Summary: The integration of phase change materials (PCM) with solar control glass in double-glazed windows can enhance thermal inertia but may also cause indoor overheating in summer. This study investigates the thermal behaviors of a composite double-glazed window in northern China under sunny and cloudy conditions. The analysis shows that the optical properties of the glass, including absorption coefficient and refractive index, significantly impact phase change cycling, indoor thermal comfort, and building energy efficiency.
Article
Thermodynamics
Xiaoyang Zhang, Zhongbing Liu, Pengcheng Wang, Benjia Li
Summary: A new type of rotating dynamic phase change material window (DPCMW) was designed in this study to improve building energy efficiency and avoid overheating. The DPCMW could adjust the position of the phase change material (PCM) and vacuum glass layers to change the heat flux direction and reduce building load. The performance of the DPCMW was found to be better than that of a static PCM window (SPCMW) in both winter and summer. The optimal phase transition temperature range was determined to be 23-25 degrees C, and the thicker the PCM layer, the better the energy-saving effect. This study provides a theoretical basis for the application of the DPCMW.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Construction & Building Technology
Qing Wu, Zhaojun Wang, Jiankai Dong, Jing Liu
Summary: This study analyzed the airflow field over a radiator in a window-wall radiator heating system using thermal image velocimetry(TIV) and established a correlation for judging the existence of an overheating mode. The momentum of the downdraft along the window and that of the thermal plume along the radiator were calculated, and a correction coefficient related to the radiator structure was introduced. The study will be helpful in increasing the efficiency of heating systems.
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Gabriele Bernardini, Tiago Miguel Ferreira, Pilar Baquedano Julia, Rafael Ramirez Eudave, Enrico Quagliarini
Summary: This research offers a methodology for combined spatiotemporal flood risk assessment, considering hazard, physical vulnerability, user exposure, and vulnerability. It adopts a mesoscale approach and investigates indoor and outdoor users' exposure and vulnerability, using the Analytical Hierarchy Process to combine risk factors.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Ying Liu, Chunli Chu, Ruijun Zhang, Shaoqing Chen, Chao Xu, Dongliang Zhao, Chunchun Meng, Meiting Ju, Zhi Cao
Summary: This study investigates the effects of increasing road, wall, and roof albedo on mitigating the urban heat island (UHI) effect in different areas of Tianjin. The results reveal that increasing road albedo is more effective in fringe areas, while increasing wall and roof albedo is more effective in central areas. The temperature changes induced by albedo changes also show seasonal characteristics.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Xisheng Lin, Yunfei Fu, Daniel Z. Peng, Chun-Ho Liu, Mengyuan Chu, Zengshun Chen, Fan Yang, Tim K. T. Tse, Cruz Y. Li, Xinxin Feng
Summary: This study employed computational fluid dynamics and neural network models to investigate and predict pollutant dispersion in urban environments, providing valuable insights for designing effective strategies to mitigate the impacts of hazardous pollutants.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Dipanjan Nag, Arkopal Kishore Goswami
Summary: Future-oriented urban planning should continue to focus on the principles of accessible and walkable cities. The perception of people is crucial for developing better urban walking infrastructure, but current evaluation tools often neglect the "perceived" features of the walking network. This study used conjoint analysis to evaluate users' perception of link and network attributes, revealing the importance of considering both in improving the walking environment.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Yongxin Su, Tao Zhang, Mengyao Xu, Mao Tan, Yuzhou Zhang, Rui Wang, Ling Wang
Summary: This study proposes an optimization method for household integrated demand response (HIDR) by combining rough knowledge and a dueling deep Q-network (DDQN), aiming to address uncertainties in a household multi-energy system (HMES). The simulation results demonstrate that the proposed method outperforms rule-based methods and DDQN in terms of energy cost savings.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Sijia Sun, S. F. A. Batista, Monica Menendez, Yuanqing Wang, Shuang Zhang
Summary: This paper comprehensively analyzes the energy consumption characteristics of electric buses (EBs) and diesel buses (DBs) on different bus lane configurations and operational conditions. The study shows that EBs consume less energy in suburban areas when using regular lanes, while both EBs and DBs save substantial energy when operating on dedicated bus lanes in downtown areas. Notably, shared-use bus lanes have the highest energy consumption.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Shangshang Shen, Dan Yan, Xiaojie Liu
Summary: This study developed a comprehensive theoretical framework for evaluating, diagnosing, and optimizing multi-functional urban agriculture. The framework was applied in Xiamen, China to identify the obstacles that impede its coordinated development and propose optimized modes for its development. Results showed that urban agriculture in Xiamen exhibits sound social function, moderate economic function, and poor ecological function.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Oluwafemi E. Adeyeri, Akinleye H. Folorunsho, Kayode I. Ayegbusi, Vishal Bobde, Tolulope E. Adeliyi, Christopher E. Ndehedehe, Akintomide A. Akinsanola
Summary: This study examines the impact of land cover, vegetation health, climatic forcings, elevation heat loads, and terrain characteristics on land surface temperature distribution over West Africa. The random forest model performs the best in downscaling predictands. The southern regions consistently exhibit healthy vegetation, while areas with unhealthy vegetation coincide with hot land surface temperature clusters. Positive Normalized Difference Vegetation Index trends in the Sahel highlight rainfall recovery and subsequent greening. Southwest winds cause the upwelling of cold waters, resulting in low land surface temperatures in southern West Africa. Considering LVCET factors is crucial for prioritizing greening initiatives and urban planning.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Yuchi Cao, Yan Li, Shouyun Shen, Weiwei Wang, Xiao Peng, Jiaao Chen, Jingpeng Liao, Xinyi Lv, Yifan Liu, Lehan Ma, Guodian Hu, Jinghuan Jiang, Dan Sun, Qingchu Jiang, Qiulin Liao
Summary: The study reveals significant disparities in urban green equity, with high property price areas having better access to green spaces than low property price areas. Landscape and greening have the most significant impact on urban green space differentiation.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Shaobo Sun, Kui Shan, Shengwei Wang
Summary: Economizer control is an important measure for energy savings in air-conditioning systems during moderate seasons. Humidity measurement uncertainties have a significant impact on enthalpy-based economizer control, and an uncertainty-tolerant control strategy is proposed to mitigate these effects.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Ding Mao, Peng Wang, Yi-Ping Fang, Long Ni
Summary: This study analyzes the structure, function, operation, and failure characteristics of district heating networks (DHNs) and proposes vulnerability analysis methods. The effectiveness of these methods is validated through application to a DHN in a Chinese city. The study finds that the heat source connectivity efficiency loss rate effectively characterizes topological and functional vulnerability. It also reveals that controllable DHNs have higher functional vulnerability under large area failure scenarios.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Hamid Karimi, Saeed Hasanzadeh, Hedayat Saboori
Summary: This paper presents a stochastic and cooperative approach for the operation of a cluster of interconnected multi-energy systems. The proposed model investigates the interaction among energy systems and integrates hydrogen and water systems into the overall energy structure. The model studies the performance of energy system agents in decentralized and cooperative scheduling.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Zhiyu Yan, Xiaogang Guo, Zilong Zhao, Luliang Tang
Summary: This study proposes a novel framework for fine-grained information extraction and dynamic spatial-temporal awareness in disaster-stricken areas based on social media data. The framework utilizes deep learning modules to extract location and water depth information from text and images, and analyzes the spatio-temporal distribution characteristics. The results show that the fusion of text and image-based information can enhance the perception of flood processes.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
M. A. Pans, G. Claudio, P. C. Eames
Summary: This study simulated and optimized a speculative district heating system in an existing urban area in Loughborough, UK. The system used only renewable heat sources and thermal energy storage to address the mismatch between heat generation and demand. The study assessed the impact of long-term storage volume and charging temperature on system cost and energy efficiency.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Construction & Building Technology
Jianmei Zhong, Wei Zhang, Xiaoli Wang, Jinsheng Zhan, Tao Xia, Lingzhi Xie, Xiding Zeng, Kun Yang, Zhangyu Li, Ruiwen Zou, Zepu Bai, Qing Wang, Chenyang Zhang
Summary: This study aims to propose a suitable air distribution design and reduce the energy consumption of the BSL-4 laboratory. It analyzes the diffusion characteristics of aerosols, infection risk under different air distributions, and ventilation parameters. The results show that the proposed energy-saving operation strategy can reduce the energy consumption of the laboratory by 15-30%.
SUSTAINABLE CITIES AND SOCIETY
(2024)
