Article
Thermodynamics
Rova Rabeharivelo, Mustafa Kavraz, Cemalettin Aygun
Summary: In this study, the effect of ventilation using a wind tower on thermal comfort in a classroom was investigated, with two different models studied and the more ergonomic model identified for users in Trabzon during August. Changes in the wind tower's dimensions significantly impacted ventilation performance under the hot conditions of Trabzon.
BUILDING SIMULATION
(2022)
Article
Construction & Building Technology
Tajudeen Dele Mustapha, Ahmad Sanusi Hassan, Fatemeh Khozaei, Hilary Omatule Onubi
Summary: Most thermal comfort research has focused on office and commercial buildings, neglecting the importance of educational facilities. This study investigates thermal comfort settings in secondary school classrooms in Abuja's hot and dry climate and finds that none of the studied classrooms met the ASHRAE Standard-55 comfort range. However, 44% of students still felt comfortable, indicating a need for a local thermal comfort standard.
INDOOR AND BUILT ENVIRONMENT
(2023)
Article
Thermodynamics
Dalia Ghaddar, Mariam Itani, Nesreen Ghaddar, Kamel Ghali, Joseph Zeaiter
Summary: This study developed a standalone autonomously controlled personalized ventilation unit in a naturally ventilated office space to maintain acceptable thermal comfort. The NV-PV proportional integral derivative controller adjusted the supply temperature based on predicted thermal comfort levels, with adaptive tuning coefficients found using the Internal Model Control method. The controller was able to maintain acceptable thermal comfort under transient indoor conditions and activity levels.
BUILDING SIMULATION
(2021)
Article
Green & Sustainable Science & Technology
Irene Poza-Casado, Raquel Gil-Valverde, Alberto Meiss, Miguel Angel Padilla-Marcos
Summary: This study assessed the natural ventilation in two university classrooms in Spain and found that relying solely on air infiltration for ventilation is insufficient to ensure indoor air quality. Specific controlled ventilation strategies should be implemented to improve IAQ and avoid excessive energy loss.
Article
Thermodynamics
Jose Luis Fernandez-Zayas, Juan Francisco Villa-Medina, Norberto Chargoy-del Valle, Miguel Angel Porta-Gandara
Summary: An experiment was conducted in a ten-story office building in Mexico City to evaluate natural ventilation, aiming to establish basic design considerations for effective ventilation. The results from temperature measurements, based on a simple mathematical model, showed consistent airflow patterns and specific characteristics of the ventilation phenomenon. The study validated the feasibility of using natural ventilation to provide passive thermal comfort throughout the year in Mexico City.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Construction & Building Technology
Rajan Rawal, Yash Shukla, Vishnu Vardhan, Sneha Asrani, Marcel Schweiker, Richard de Dear, Vishal Garg, Jyotirmay Mathur, Sanjay Prakash, Saurabh Diddi, S. Vikash Ranjan, Abdullah N. Siddiqui, Govinda Somani
Summary: This study proposes an adaptive thermal comfort model for Indian residences and compares it with other existing models. The research finds that the thermal adaptivity of Indian occupants is underestimated by current models. The proposed model shows potential in meeting the thermal comfort needs of the national population while promoting long-term energy savings and climate action.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Chali Yadeta, Madhavi Indraganti, Gudina Terefe Tucho, Esayas Alemayehu
Summary: This study investigates thermal comfort, adaptive models, and behavioral adaptations in naturally ventilated residential buildings in Jimma town, Ethiopia. The research finds that a majority of occupants feel uncomfortable with the environmental temperature but are able to adapt through environmental adjustments, clothing choices, and activity levels.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Payam Nejat, John Kaiser Calautit, Yashar Fekri, Mohammadamin Sheikhshahrokhdehkordi, Hayder Alsaad, Conrad Voelker
Summary: Windcatchers are a promising natural ventilation alternative that can provide good ventilation performance and thermal comfort. This study investigated the impact of different terrain types and atmospheric boundary layer (ABL) profiles on the performance of windcatchers. The results showed that as the terrain changes from open countryside to urban areas, the induced flow rate decreases but still meets the recommended standards. The study also found that thermal comfort was affected by outdoor temperature and all terrains failed to provide comfort under higher temperatures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Victoria Patricia Lopez-Cabeza, Carlos Rivera-Gomez, Jorge Roa-Fernandez, Miguel Hernandez-Valencia, Rafael Herrera-Limones
Summary: Thermal inertia and natural ventilation are commonly used and studied strategies in indoor building performance. However, their effects on the outdoor microclimate have been little analyzed. This study investigates the thermal performance of courtyards by analyzing the effects of thermal inertia and ventilation using a real-scale prototype.
BUILDING AND ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Ibrahim Reda, Raouf N. AbdelMessih, Mohamed Steit, Ehab M. Mina
Summary: The study found that cross-ventilation can achieve thermal comfort within a suitable range of ambient temperature, while single-side ventilation performs poorly. The DISO scenario with double-inlet single-outlet ventilation can achieve a lower temperature difference, and is suitable for energy conservation and emission reduction.
Review
Construction & Building Technology
Runming Yao, Shaoxing Zhang, Chenqiu Du, Marcel Schweiker, Simon Hodder, Bjarne W. Olesen, Jorn Toftum, Francesca Romana D'Ambrosio, Hansjuergen Gebhardt, Shan Zhou, Feng Yuan, Baizhan Li
Summary: This paper reviews the historical evolution of thermal comfort research, focusing on adaptive thermal comfort studies and evaluating representative prediction models. Based on the analysis, three thermal environment assessment approaches are classified and their strengths and constraints are analyzed.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Pablo Aparicio-Ruiz, Elena Barbadilla-Martin, Jose Guadix, Jesus Munuzuri
Summary: The study reveals discrepancies in thermal comfort between children and adults, with children preferring cooler temperatures and a wider comfort range at 24-27 degrees Celsius indoors. They tend to opt for natural ventilation strategies like opening windows and doors over using fans or changing clothes.
BUILDING AND ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Karthik A. Sabapathy, Sateesh Gedupudi
Summary: This study focuses on the heat insulating potential of straw, which is an agricultural residue, used as part of the envelope of unconditioned buildings. Through transient thermal analysis and qualitative discussion, the thermal performances of different building envelope structures with and without straw insulation are compared and evaluated for representative summer and winter conditions in five different climatic zones in India.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Public, Environmental & Occupational Health
M. T. Miranda, P. Romero, V. Valero-Amaro, J. Arranz, I Montero
Summary: Current evidence suggests that COVID-19 can be transmitted through aerosols in indoor areas such as educational centers. Ventilation is a crucial measure in reducing the risk of infection. A study analyzed the effects of natural ventilation through windows on indoor air quality and thermal comfort during on-site examinations in higher education centers during the winter season. The results showed that ventilation conditions were generally adequate, but they might affect the thermal comfort of the occupants.
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2022)
Article
Environmental Sciences
Sarkawt Hama, Prashant Kumar, Arvind Tiwari, Yan Wang, Paul F. Linden
Summary: This study monitored the air quality in classrooms in five schools in London, finding that classroom air pollution, including particulate matter and CO2 concentrations, is affected by various factors such as classroom characteristics and ventilation. The results show that CO2 concentrations during occupancy were 150% higher than non-occupancy, and PM concentrations during occupancy were significantly higher compared to non-occupancy. Overall, the air quality in classrooms was found to be poor.
ENVIRONMENTAL RESEARCH
(2023)
Article
Construction & Building Technology
Asit Kumar Mishra, Maddali Ramgopal
BUILDING AND ENVIRONMENT
(2015)
Article
Construction & Building Technology
Asit Kumar Mishra, Maddali Ramgopal
BUILDING AND ENVIRONMENT
(2015)
Article
Construction & Building Technology
A. K. Mishra, R. P. Kramer, M. G. L. C. Loomans, H. L. Schellen
BUILDING AND ENVIRONMENT
(2016)
Article
Construction & Building Technology
A. K. Mishra, M. G. L. C. Loomans, J. L. M. Hensen
BUILDING AND ENVIRONMENT
(2016)
Article
Construction & Building Technology
A. K. Mishra, A. M. van Ruitenbeek, M. G. L. C. Loomans, H. S. M. Kort
Article
Construction & Building Technology
M. T. H. Derks, A. K. Mishra, M. G. L. C. Loomans, H. S. M. Kort
BUILDING AND ENVIRONMENT
(2018)
Article
Construction & Building Technology
M. G. L. C. Loomans, A. K. Mishra, M. T. H. Derks, J. J. Kraakman, H. S. M. Kort
BUILDING AND ENVIRONMENT
(2018)
Article
Computer Science, Hardware & Architecture
Asit Mishra, Marcel Loomans, Risto Kosonen
IEEE CONSUMER ELECTRONICS MAGAZINE
(2019)
Article
Construction & Building Technology
Asit Kumar Mishra, Juha Jokisalo, Risto Kosonen, Tuomas Kinnunen, Matias Ekkerhaugen, Heikki Ihasalo, Kristian Martin
SUSTAINABLE CITIES AND SOCIETY
(2019)
Article
Construction & Building Technology
M. G. L. C. Loomans, A. K. Mishra, L. Kooi
BUILDING AND ENVIRONMENT
(2020)
Article
Engineering, Environmental
Elliott T. Gall, Asit Kumar Mishra, Jiayu Li, Stefano Schiavon, Aurelie Laguerre
Summary: The study found that human emission rates of CO2 and isoprene were higher under cognitive tasks compared to relaxed activities, indicating that activity levels can affect the release of chemical substances.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Construction & Building Technology
Asit Kumar Mishra, Stefano Schiavon, Pawel Wargocki, Kwok Wai Tham
Summary: In a business as usual scenario, atmospheric CO2 concentration may reach 950 ppm by 2100, leading to indoor CO2 levels rising. Poor ventilation could affect respiratory parameters, potentially due to increased concentrations of pollutants other than CO2, such as human bioeffluents.
Article
Architecture
Naadir Vorajee, Asit Kumar Mishra, Amit Kumar Mishra
FRONTIERS OF ARCHITECTURAL RESEARCH
(2020)
Article
Construction & Building Technology
A. K. Mishra, M. T. H. Derks, L. Kooi, M. G. L. C. Loomans, H. S. M. Kort
BUILDING AND ENVIRONMENT
(2017)
Article
Construction & Building Technology
Parth Bansal, Steven Jige Quan
Summary: This study investigates the relationship between urban form and canopy layer urban heat island (CUHI) using a relatively large sample of microclimate sensors in Seoul, Korea. The study compares different statistical models and finds that the spatially explicit gradient boosting decision tree (GBDT) model has the highest accuracy. The study also shows that the effect of urban form on CUHI varies at different time instances during the day. These findings provide valuable insights for planners to understand the complexity of urban climate and reduce CUHI magnitude.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Miaomiao Liu, Salah Almazmumi, Pinlu Cao, Carlos Jimenez-bescos, John Kaiser Calautit
Summary: Windcatchers provide effective low-energy ventilation and summer passive cooling in temperate climates. However, their use in winter is limited due to significant ventilation heat loss and potential discomfort. This study evaluates the applicability of windcatchers in low-temperature conditions, highlighting the need for control strategies to reduce over-ventilation and the integration of heat recovery or thermal storage to enhance winter thermal conditions.
BUILDING AND ENVIRONMENT
(2024)
Review
Construction & Building Technology
Behrouz Nourozi, Aneta Wierzbicka, Runming Yao, Sasan Sadrizadeh
Summary: This article presents a systematic review of ventilation solutions in hospital wards, aiming to enhance pathogen removal performance while maintaining patient and healthcare staff comfort using air-cleaning techniques. The study reveals the importance of proper ventilation systems in reducing infection risk and adverse effects of cross-contamination.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Zhen Yang, Weirong Zhang, Hongkai Liu, Weijia Zhang, Mingyuan Qin
Summary: The study examines the influence of personalized local heating on the thermal comfort of occupants in old residential buildings. The findings reveal that personalized local heating can increase the overall thermal sensation of occupants, but only a few methods are effective in enhancing thermal comfort. The chosen heating methods and background temperature affect the participants' selection of heating parts.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Hong Cheng, Dan Norback, Huilin Zhang, Liu Yang, Baizhan Li, Yinping Zhang, Zhuohui Zhao, Qihong Deng, Chen Huang, Xu Yang, Chan Lu, Hua Qian, Tingting Wang, Ling Zhang, Wei Yu, Juan Wang, Xin Zhang
Summary: The home environment and sick building syndrome (SBS) symptoms in five southern Chinese cities have been studied over time. The study found a decrease in asthma prevalence and an increase in allergic rhinitis. Cockroaches, rats, mice, mosquitoes or flies were identified as consistent biological risk factors for SBS symptoms, while redecoration, buying new furniture, and traffic air pollution were identified as other risk factors.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Chaojie Xing, Zhengtao Ai, Zhiwei Liu, Cheuk Ming Mak, Hai Ming Wong
Summary: This study experimentally investigated the emission characteristics of droplets around the mouth during dental treatments. The results showed that the peak mass fraction of droplets occurs within the size range of 20 μm to 100 μm, and droplets with a diameter less than 200 μm account for over 80% of the mass fraction. The dominant emission direction of droplets is towards the dummy's head and chest, forming an approximately cone shape.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Zhijian Liu, Zhe Han, Lina Hu, Chenxing Hu, Rui Rong
Summary: This study compared the effects of different respiratory behaviors on the distribution of aerosols in a ward and the risk of infection for healthcare workers using numerical simulation. It was found that talking in the ward significantly increased aerosol concentrations, particularly short periods of talking. Wards designed with side-supply ventilation had lower overall infection risk. Talking alternately between healthcare workers and patients slightly extended the impact time of aerosols.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Yan Yan, Mengyuan Kang, Haodong Zhang, Zhiwei Lian, Xiaojun Fan, Chandra Sekhar, Pawel Wargocki, Li Lan
Summary: In a high-density city, opening windows for sleep may lead to increased indoor temperature, higher PM2.5 concentration, and noise disturbance, which can negatively impact sleep quality.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Yan Bai, Liang Liu, Kai Liu, Shuai Yu, Yifan Shen, Di Sun
Summary: This study developed a non-intrusive personal thermal comfort model using machine learning techniques combined with infrared facial recognition. The results showed that the ensemble learning models perform better than traditional models, and the broad learning model has a higher prediction precision with lower computational complexity and faster training speed compared to deep neural networks. The findings provide a reference for optimizing building thermal environments.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Yue Lei, Zeynep Duygu Tekler, Sicheng Zhan, Clayton Miller, Adrian Chong
Summary: Mixed-mode ventilation is a promising solution for achieving energy-efficient and comfortable indoor environments. This study found that occupants can thermally adapt when switching between natural ventilation (NV) and air-conditioning (AC) modes within the same day, with the adaptation process stabilizing between 35 to 45 minutes after the mode switch. These findings are important for optimizing thermal comfort in mixed-mode controls, considering the dynamic nature of thermal adaptation.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Nan Mo, Jie Han, Yingde Yin, Yelin Zhang
Summary: This study develops a method based on the LCZ framework for a comprehensive evaluation of urban-scale heat island effects, considering the impact of geographic factors on LST. The results show that Guilin's geomorphological conditions lead to abnormal heat island effects during winter, and the cooling effects of mountains and water bodies vary seasonally in different built areas, with LCZ 2 exhibiting the strongest cooling effect.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Tunga Salthammer
Summary: Monitoring the potential formaldehyde emission of wood-based materials through test chamber investigations has significantly contributed to reducing indoor formaldehyde concentrations. However, the different methodologies used in these procedures prevent direct result comparison. Empirical models for converting formaldehyde steady-state concentrations based on temperature, humidity, air change rate, and loading were developed in the 1970s and have been modified to accommodate the development of lower-emitting materials. Formaldehyde emissions from wood-based materials are complex and require nonlinear regression tools for mathematical analysis.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Katarina Stebelova, Katarina Kovacova, Zuzana Dzirbikova, Peter Hanuliak, Tomas Bacigal, Peter Hartman, Andrea Vargova, Jozef Hraska
Summary: This study investigated the impact of reduced short-wavelength light on the hormone melatonin metabolite 6-sulfatoxymelatonin (u-sMEL) and examined the association between previous day's light exposure and u-sMEL. It was found that reducing short-wavelength light during the day did not change the concentration of u-sMEL. Personal photopic illuminance was positively correlated with u-sMEL in the reference week. The illuminance had a significant impact on u-sMEL, as shown by the evaluation of the mean of all three urine samples. However, this correlation was not found in the experimental week.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Ruoxin Xiong, Ying Shi, Haoming Jing, Wei Liang, Yorie Nakahira, Pingbo Tang
Summary: This study proposes a data-model integration method to identify and calibrate uncertainties in machine learning models, leading to improved thermal perception predictions. The method utilizes the Multidimensional Association Rule Mining algorithm to identify biased human responses and enhances prediction accuracy and reliability. The study also evaluates different calibration techniques and discovers their potential in enhancing prediction reliability.
BUILDING AND ENVIRONMENT
(2024)
Article
Construction & Building Technology
Beichao Hu, Zeda Yin, Abderrachid Hamrani, Arturo Leon, Dwayne McDaniel
Summary: This paper introduces an innovative super-resolution approach to model the air flow and temperature field in the cold aisle of a data center. The proposed method reconstructs a high-fidelity flow field by using a low-fidelity flow field, significantly reducing the computational time and enabling real-time prediction.
BUILDING AND ENVIRONMENT
(2024)