Article
Construction & Building Technology
Ruohong Qiao, Xinyuan Lou, Yuexia Sun, Yingjun Liu
Summary: This study investigated the perceived air quality and sick building syndrome symptoms in female student dormitories in a university in Tianjin, China. The prevalence of symptoms was found to be around 22.1%, with dry air, stuffy odor, and unpleasant odors being the most common complaints. The study also identified various factors such as the use of air freshener/perfume, room cleaning frequency, occupancy density, and natural ventilation that were significantly associated with both air quality perception and symptom occurrence.
Article
Construction & Building Technology
Michael G. Kent, Nam Khoa Huynh, Asit Kumar Mishra, Federico Tartarini, Aleksandra Lipczynska, Jiayu Li, Zurami Sultan, Edwin Goh, Giridharan Karunagaran, Arulmani Natarajan, Asiri Indrajith, Ivanna Hendri, Komang I. Narendra, Vicky Wu, Noel Chin, Chun Ping Gao, Majid Sapar, Alvin Seoh, Nur Shuhadah, Selvam Valliappan, Tim Jukes, Costas Spanos, Stefano Schiavon
Summary: Fan-induced air movement can reduce the energy requirements of air-conditioning by allowing temperature setpoints to be raised without compromising thermal comfort. In a study conducted in a Zero Energy office building in Singapore, the installation of ceiling and desk fans led to a 32% reduction in energy consumption and a significant decrease in overcooling. There were no negative impacts on thermal satisfaction or subjective measures of air freshness, alertness, and concentration, indicating that fans can improve thermal comfort without drawbacks.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Li Lan, Jieyu Tang, Pawel Wargocki, David P. Wyon, Zhiwei Lian
Summary: This study successfully created thermal comfort conditions at different temperatures by adjusting clothing and air velocity. The study found that cognitive performance decreased significantly at elevated temperatures, with higher perceived workload and more intense subclinical health symptoms reported by subjects. Therefore, ensuring a comfortably cool environment is important for maintaining cognitive performance.
Article
Construction & Building Technology
Kuniaki Mihara, Chandra Sekhar, Yuichi Takemasa, Bertrand Lasternas, Kwok Wai Tham
Summary: In an actual university building, a design studio equipped with DOAS-CF provided better thermal comfort and air quality compared to the computer lab with FCU, with a 27.7% energy consumption saving due to higher setpoint temperature and occupants' behavioral adaptation.
BUILDING AND ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Graham Coulby, Adrian K. Clear, Oliver Jones, Suzanne McDonald, Alan Godfrey
Summary: This study aims to monitor the impact of long-term changes in individuals and their environment on indoor environmental quality, and proposes a new approach to environmental perception gathering. The protocol has the potential to reveal the correlation between environmental changes and individual behavioral and physiological responses, which is significant for building performance monitoring and individual health and well-being.
Article
Construction & Building Technology
Jing Hou, Yuexia Sun, Xilei Dai, Junjie Liu, Xiong Shen, Hongwei Tan, Haiguo Yin, Kailiang Huang, Yao Gao, Dayi Lai, Weiping Hong, Xinping Zhai, Dan Norback, Qingyan Chen
Summary: Indoor CO2 concentration is significantly associated with occupants' perceived stuffy odor and skin SBS symptoms; higher relative humidity is related to perceived moldy odor and humid air, while lower RH is connected to perceived dry air; high humidity can reduce mucosal and skin SBS symptoms, but its benefit for perceived dry air and skin dryness symptoms is weaker if there is a high CO2 concentration level.
Article
Construction & Building Technology
Nada Farrag, Manal A. S. Abou El-Ela, Sherif Ezzeldin
Summary: The research on sick building syndrome focuses on the relationship between design elements, indoor environmental quality, and office productivity. It reveals that a comfortable office environment is crucial for office occupants and should be prioritized in the design process to prevent sick building syndrome.
INDOOR AND BUILT ENVIRONMENT
(2022)
Article
Construction & Building Technology
Raul Berto, Francesca Tintinaglia, Paolo Rosato
Summary: The study highlights the importance of indoor comfort on people's quality of life and values. It reveals that thermal comfort is the aspect that people are willing to pay the highest price for, indicating a high level of appreciation for indoor comfort.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Chunying Zuo, Lin Luo, Weiwei Liu
Summary: Increasing relative humidity had no significant effects on physiological responses and thermal comfort at lower temperatures (26 and 30 degrees C), but caused significant increases in heart rate, respiration rate, mean skin temperature, and discomfort at higher temperature (37 degrees C). The study suggests that acclimated individuals in hot-humid climates may experience more pronounced physiological changes and discomfort at elevated temperatures combined with increased humidity levels.
Article
Construction & Building Technology
Maohui Luo, Hui Zhang, Paul Raftery, Linxuan Zhou, Thomas Parkinson, Edward Arens, Yingdong He, Elaina Present
Summary: This study conducted detailed air speed measurements in four different buildings to investigate the impact of ceiling fan layouts on airflow within occupied spaces. The results showed that furniture blocking effects can reduce air movement, and introduced the Airspeed Coverage Index to describe the combined effects of influencing factors on air speed magnitude. Visual presentations of fan interactions also demonstrated that diagonal layouts of ceiling fans can increase average air speed and improve uniformity.
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Xinyue Hu, Nianping Li, Jiayuan Gu, Yingdong He, A. Yongga
Summary: The development of underground space can help cities solve land and space demand issues, but there are still many problems to be solved. This study investigates the differences in the comfort of lighting and thermal environment, work performance, and SBS symptoms among people living in underground spaces for long and short periods. The results provide optimal temperature and illuminance ranges for balancing these aspects and contribute to creating healthy and comfortable indoor environments in shared underground building spaces.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Energy & Fuels
Ivo Silva, Paulo Mendonca, Carlos Maia
Summary: This study examines the impact of original construction systems on the winter thermal comfort of a modern movement apartment building. Analyzing the avant-garde and distinctive buildings of this period is important in order to define appropriate strategies for their reuse, maintenance, and restoration. The study concludes that thermal passive comfort is crucial to the architectural space and functionality of the building. It provides a basis for respectful restoration interventions in modern movement architectural heritage.
Article
Construction & Building Technology
Maryam Sarkhosh, Ali Asghar Najafpoor, Hosein Alidadi, Jamal Shamsara, Hanieh Amiri, Tittarelli Andrea, Fatemeh Kariminejad
Summary: The study found a high prevalence rate of Sick Building Syndrome (SBS) symptoms among office workers, mostly associated with smoking, long working hours, and psychological factors. Volatile Organic Compounds and bacterial contamination were identified as the main influencing factors.
BUILDING AND ENVIRONMENT
(2021)
Article
Environmental Sciences
Ioannis Nezis, George Biskos, Konstantinos Eleftheriadis, Prodromos Fetfatzis, Olga Popovicheva, Nikolay Sitnikov, Olga-Ioanna Kalantzi
Summary: Poor indoor air quality is a significant issue for public and occupational health worldwide, with specific pollutants potentially contributing to Sick Building Syndrome symptoms. A study in a public building in Athens, Greece found associations between PM2.5 and BC concentrations and reported SBS symptoms among employees. Female employees were more likely to report SBS symptoms, particularly nonspecific symptoms.
ATMOSPHERIC POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Hao Tang, Yong Ding, Xue Liu, Brett C. Singer
Summary: Previous research on indoor environmental quality (IEQ) parameters has mainly focused on respondents who were uninformed about the test conditions, thus leading to limited understanding of the impact of information on perception. This experimental study found that accurate information on parameter values influenced the perception of indoor air quality (IAQ), while qualitative ratings affected perceptions of all four environmental factors. However, improved sensation and satisfaction were often not as good as when the environmental conditions were actually improved and accurate information was provided.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Industrial
Kailun Feng, Shiwei Chen, Weizhuo Lu, Shuo Wang, Bin Yang, Chengshuang Sun, Yaowu Wang
Summary: This study proposes an optimization approach by establishing an embedded connection between simulation and optimization technologies, which reduces computational loads and ensures optimization quality by accurately learning knowledge from construction simulations using embedded ensemble learning algorithms. The approach was able to reduce computational loads of SO by approximately 90% and outperformed SO in terms of optimization quality when the optimization has limited searching ability, providing an innovative and efficient method for construction applications.
ENGINEERING CONSTRUCTION AND ARCHITECTURAL MANAGEMENT
(2023)
Article
Construction & Building Technology
Yuwen You, Guo Wang, Bin Yang, Chunmei Guo, Yiwei Ma, Baohua Cheng
Summary: This study experimentally analyzed two different hydrophilic materials in an indirect evaporative cooler (IEC) system. The research found that applying a hydrophilic coating on the plate wall of the heat exchanger can improve its overall performance, resulting in increased enthalpy efficiency, wet-bulb efficiency, enlargement coefficient, and coefficient of performance (COP).
ENERGY AND BUILDINGS
(2022)
Editorial Material
Construction & Building Technology
Won Hee Ko, Stefano Schiavon, Sergio Altomonte, Marilyne Andersen, Ayesha Batool, William Browning, Galen Burrell, Kynthia Chamilothori, Ying-Chieh Chan, Giorgia Chinazzo, Jens Christoffersen, Nancy Clanton, Christopher Connock, Timur Dogan, Billie Faircloth, Luis Fernandes, Lisa Heschong, Kevin W. Houser, Mehlika Inanici, Alstan Jakubiec, Anjali Joseph, Caroline Karmann, Michael Kent, Kyle Konis, Iason Konstantzos, Kera Lagios, Linda Lam, Florence Lam, Eleanor Lee, Brendon Levitt, Wenting Li, Piers MacNaughton, Ahoo Malekafzali Ardakan, John Mardaljevic, Barbara Matusiak, Werner Osterhaus, Steffen Petersen, Matt Piccone, Clotilde Pierson, Brent Protzman, Tarek Rakha, Christoph Reinhart, Siobhan Rockcastle, Holly Samuelson, Luis Santos, Azadeh Sawyer, Stephen Selkowitz, Eloise Sok, Jakob Stromann-Andersen, William C. Sullivan, Irmak Turan, Gayathri Unnikrishnan, Will Vicent, Dan Weissman, Jan Wienold
Article
Construction & Building Technology
Michael G. Kent, Stefano Schiavon
Summary: This study used machine learning models to accurately predict window view preferences based on environmental information criteria. The higher the ratings given to the criteria, the more positive the evaluations for psychological restoration and positive affect. The study recommends the use of these criteria in practice and emphasizes the importance of nature in window view design.
Article
Multidisciplinary Sciences
Bing Dong, Yapan Liu, Wei Mu, Zixin Jiang, Pratik Pandey, Tianzhen Hong, Bjarne Olesen, Thomas Lawrence, Zheng O'Neil, Clinton Andrews, Elie Azar, Karol Bandurski, Ronita Bardhan, Mateus Bavaresco, Christiane Berger, Jane Burry, Salvatore Carlucci, Karin Chvatal, Marilena De Simone, Silvia Erba, Nan Gao, Lindsay T. Graham, Camila Grassi, Rishee Jain, Sanjay Kumar, Mikkel Kjaergaard, Sepideh Korsavi, Jared Langevin, Zhengrong Li, Aleksandra Lipczynska, Ardeshir Mahdavi, Jeetika Malik, Max Marschall, Zoltan Nagy, Leticia Neves, William O'Brien, Song Pan, June Young Park, Ilaria Pigliautile, Cristina Piselli, Anna Laura Pisello, Hamed Nabizadeh Rafsanjani, Ricardo Forgiarini Rupp, Flora Salim, Stefano Schiavon, Jens Schwee, Andrew Sonta, Marianne Touchie, Andreas Wagner, Sinead Walsh, Zhe Wang, David M. Webber, Da Yan, Paolo Zangheri, Jingsi Zhang, Xiang Zhou, Xin Zhou
Summary: This paper presents a global database on building occupant behavior, which includes 34 datasets collected from various countries and institutions. These datasets provide more realistic inputs for building energy simulation and load forecasting.
Article
Construction & Building Technology
Matias Quintana, Stefano Schiavon, Federico Tartarini, Joyce Kim, Clayton Miller
Summary: Cohort Comfort Models (CCM) are a technique that predicts personalized thermal comfort for new building occupants by leveraging historical data from similar individuals. It combines background information and one-time surveys with physiological and environmental sensor measurements. The results demonstrate that CCM performs as well as or better than conventional models and achieves increased prediction accuracy when incorporating historical preference data points.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Bin Zhou, Zhe Li, Bin Yang, Xiaojing Li, Faming Wang, Shen Wei
Summary: This study proposes a new integrated air supply strategy combining impinging jet ventilation (IJV) and intermittent airflow to enhance indoor thermal comfort. The results showed that the pulsating airflow created by the strategy could lower the mean air temperature above 0.6 m and raise it below 0.6 m. It also reduced overall and local thermal sensation, as well as the thermal sensation difference between the head and foot. The intermittent operation of IJV exhibited superior cooling performance without significantly affecting perceived air quality.
BUILDING AND ENVIRONMENT
(2023)
Editorial Material
Construction & Building Technology
Ke Yan, Xiaokang Zhou, Bin Yang
BUILDING AND ENVIRONMENT
(2023)
Review
Energy & Fuels
Bin Yang, Xin Zhu, Boan Wei, Minzhang Liu, Yifan Li, Zhihan Lv, Faming Wang
Summary: Heat dissipation in high-heat flux micro-devices is a pressing issue, and boiling heat transfer in microchannels is an effective method. A novel approach using image and machine learning techniques is proposed for flow pattern and heat transfer recognition. The support vector machine method successfully recognizes flow patterns based on texture characteristics. By combining image features with machine learning algorithms, the bubble dynamics behavior and flow pattern can be determined, revealing the mechanism of boiling heat transfer.
Article
Construction & Building Technology
Bin Yang, Wei Su, Zhengtao Ai, Faming Wang
Summary: Personal comfort devices (PCDs) are widely used in air conditioning rooms to improve occupants' thermal comfort and save energy. However, the current PCD has flaws such as single heat transfer mode, limited stimulation area, and seasonal usability. To solve these issues, a novel PCD was proposed and tested on college students. Results showed that the novel device provided cooler airflow to the face and abdomen areas, reduced thermal sensation, and improved overall thermal comfort, allowing subjects to freely adjust the airflow rate. The device also achieved energy-efficient thermal comfort at a room temperature of 28 degrees C.
INDOOR AND BUILT ENVIRONMENT
(2023)
Article
Construction & Building Technology
Won Hee Ko, Stefano Schiavon, Luis Santos, Michael G. Kent, Hanwook Kim, Mohammad Keshavarzi
Summary: Aims of window design include providing quality views that affect occupants' health, well-being, and work performance. This study assessed the effect of geometric variables on occupants' satisfaction to view access and developed a view access index. The results showed that glazing area, window distance, and viewing direction were the primary predictors for view access satisfaction. Integrating these variables during the early stages of building design is important.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Bin Yang, Yihang Liu, Pengju Liu, Faming Wang, Xiaogang Cheng, Zhihan Lv
Summary: This study used a deep learning-based computer vision method for indoor occupancy detection and proposed an occupant-centric control strategy based on the monitored occupant number to regulate supply air parameters and outdoor air volume for energy saving purposes. The results showed that compared to the traditional control strategy, the proposed strategy improved comfort by 43%-73%, maintained acceptable air quality, kept CO2 concentration below 700 ppm, and saved energy by 2.3%-8.1%. It was also found that the lower the occupancy, the greater the improvement in comfort and energy savings.
BUILDING AND ENVIRONMENT
(2023)
Article
Computer Science, Artificial Intelligence
Weiping Liu, Xiaozhen Lin, Xinghong Chen, Qing Wang, Xiumei Wang, Bin Yang, Naiqing Cai, Rong Chen, Guannan Chen, Yu Lin
Summary: This study proposed a novel model, GTSN, to estimate the MDS-UPDRS score of PD tremors based on video analysis. The results demonstrated the effectiveness of computer-assisted assessment for PD tremors.
MEDICAL IMAGE ANALYSIS
(2023)
Article
Construction & Building Technology
Baisong Ning, Chandra Sekhar, Stefano Schiavon, Kwok Wai Tham, David Cheong, Hongyuan Jia, Prashant Anand
Summary: Overcooling or too high humidity issues may occur when the cooling coil in the central air-conditioning system is inadequate. Developing more advanced cooling coils to adapt to cooling load changes is a possible solution. This study presents experimental and simulation results for an adaptable coil, which shows a reduction in relative humidity and stable water flow rate compared to a conventional coil in small-scale experiments. However, in a properly sized and well-operated system, the adaptable coil does not significantly reduce humidity and overcooling.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Mechanical
Siyuan Sun, Bin Yang, Qilin Zhang, Roland Wuechner, Licheng Pan, Haitao Zhu
Summary: This paper aims to develop a fast online implementation of covariance-driven SSI (COV-SSI), which analyzes the computational cost of COV-SSI and accelerates two time-consuming steps. Numerical examples are used to validate the speed and accuracy of the proposed fast online strategies.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
