Article
Green & Sustainable Science & Technology
Hyeonji Seol, Daniel Arztmann, Naree Kim, Alvaro Balderrama
Summary: Natural ventilation is an effective way to achieve acceptable indoor air quality, but measuring the ventilation rate is not always feasible. This study applied the CO2 tracer gas decay method to estimate the ventilation rates in an office room in Seoul, South Korea. The results showed that temperature difference and wind speed were the main factors influencing the ventilation rates. This study raises awareness about indoor air quality in office rooms and provides a method for estimating ventilation rates in existing buildings.
Article
Engineering, Chemical
Yilong Qiu, Huiyu Chen, Wangxu Li, Feng Wu, Zhenggui Li
Summary: The study compares and analyzes the method of filling tracer particles in different ways to optimize PIV flowmeter measurements of natural gas, and finds that filling particles in L pipes can improve measurement accuracy. The optimized structure was successfully applied to measurements of different flow rates, significantly improving metering deviation.
Article
Construction & Building Technology
Nima Najafi Ziarani, Malcolm J. Cook, Paul D. O. 'Sullivan
Summary: This study experimentally evaluated the impact of louvres and guide vanes on single-sided ventilation (SSV), and found that deeper openings decrease ventilation rate, while wider guide vanes increase it. Louvres, in most cases, contribute to a decline in system performance, but optimal ventilation rate can be achieved with specific angles and fewer louvres. These findings provide valuable insights for optimizing the design of airflow-guiding components in wind-driven SSV systems.
ENERGY AND BUILDINGS
(2023)
Article
Agricultural Engineering
Salvador Calvet, Hendrik Jan C. van Dooren, Nico W. M. Ogink, Julio Mosquera
Summary: This study compares different chamber calculation methods for measuring CO2 production from solid manure and evaluates its variability and contribution to total CO2 production. The results show significant variation in CO2 emissions from solid manure, which are directly correlated with manure height and temperature. A prediction equation for CO2 emission was obtained for goats using these variables. Solid manure plays an important role in total farm production and needs to be quantified.
BIOSYSTEMS ENGINEERING
(2022)
Article
Construction & Building Technology
Aleksandar Jankovic, Giovanni Gennaro, Gaurav Chaudhary, Francesco Goia, Fabio Favoino
Summary: This paper presents the airflow characterization in the cavity of a double-skin facade through various methods and compares the results of two tracer gas methods with the velocity traverse method. By discussing the challenges, applicability, and limitations of these methods, the paper aims to contribute to a more grounded understanding of the suitability of tracer gas methods for in-field characterization of airflows in facades.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Ehsan Mousavi, Arup Bhattacharya
Summary: This paper discusses the impact of indoor air quality on the productivity, efficiency, and well-being of occupants. It also addresses the challenge of designing a ventilation system in building construction. The proposed event-based modeling (EBM) approach can accurately simulate airflow patterns in realistic human-environment interactions, which current techniques are unable to handle.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Chemical
Elvira Spatolisano, Laura A. Pellegrini
Summary: In the transition to a sustainable energy future, natural gas plays a key role in shifting away from coal. Re-evaluation of unconventional, stranded, and contaminated gas reserves has become necessary, with nitrogen removal being essential to lower the inert content in low-quality gases. Cryogenic nitrogen rejection is identified as the leading technology for large-scale applications, with three-column process schemes demonstrating the highest thermodynamic performances.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Construction & Building Technology
Haida Tang, Zhenyu Pan, Chunying Li
Summary: This study established an approach to assess the indoor airborne-disease infection risks through aerosol transmission using real-time CO2 field measurement and occupancy monitoring. The method was applied in a university office and demonstrated that individual infection risks varied with different dwell times and working places. The proposed approach can provide early warning for building occupants and contribute to the control of air-borne disease transmission.
BUILDING AND ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Muhammad Nizami, Rizqi Ilma Nugroho, Kameliya Hani Milati, Yoga Wienda Pratama, Widodo Wahyu Purwanto
Summary: This study compared the economic performance of two CO2 separation technologies for LNG production and found that the controlled freeze zone (CFZ) separation process outperforms the membrane-based process.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Analytical
Mei Li, Bing Liu, Taotao Chen, Ruidong Liu, Yingzhe Guo, Keyong Hou
Summary: We introduced neon gas as a tracer gas in natural gas pipelines and used a miniature time-of-flight mass spectrometry (mini-TOFMS) for on-site detection to locate underground natural gas pipeline leaks. The mini-TOFMS employed capillary tube sampling to directly analyze leaked neon gas without sample preparation, with a single sample analysis time of only 60 s, significantly faster than the traditional off-line gas chromatography (GC) method. The mini-TOFMS showed a linear response range from 69 ppmv to 3.0 x 105 ppmv, with a limit of detection (LOD, S/N = 3) of 19.0 ppmv. The correlation between GC and mini-TOFMS for quantitative analysis of neon was as high as 0.98. The newly designed method using mini-TOFMS was successfully demonstrated in on-site locating underground natural gas pipeline leaks, particularly for pipes with differing gas pressures buried under the same road, providing more efficient and accurate results.
Article
Energy & Fuels
Wendong Wang, Jiayi Wen, Chengwei Wang, Sina Rezaei Gomari, Xinyue Xu, Shuang Zheng, Yuliang Su, Lei Li, Yongmao Hao, Dongxia Li
Summary: CO2 storage with enhanced gas recovery (CSEGR) technology is a pivotal solution for mitigating the greenhouse effect and complying with energy conservation and emission reduction policies. This paper thoroughly analyzes the mechanisms and potential of CO2 storage in gas reservoirs, as well as the factors affecting CSEGR. It also examines the current challenges and future trends in CSEGR development.
Article
Engineering, Chemical
Yang Han, W. S. Winston Ho
Summary: This review discusses the fundamentals of CO2/gas separation in polymeric membranes and explores the opportunities and challenges for various applications such as post-combustion carbon capture, hydrogen purification, and gas sweetening. It also highlights emerging polymeric membrane materials and promising candidates for CO2 separation applications, while comparing permeability-selectivity data against their upper bounds in 2008 and 2019.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Chae Jeong-Potter, Monica Abdallah, Shruti Kota, Robert Farrauto
Summary: The term dual function material (DFM) refers to materials with codispersed catalysts and alkaline sorbents on the same carrier. In this study, the researchers report an unexpected function of combining Ru with specific adsorbents and carriers, which leads to a substantial enhancement in CO2 capture capacity. It is found that this enhancement effect is not inherent with Ru alone, but requires a specific combination of DFM components.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Xi-Yue Li, Jin Yan, Dong-Liang Zhong, Shi-Jian Lu, Bin-Bin Ge
Summary: This study investigated the formation of tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate for CO2 capture through experiments and in situ Raman spectroscopy. The impacts of TBAB concentration and operating temperature on CO2 incorporation into TBAB semiclathrates were analyzed. The results showed that the structure transition of TBAB semiclathrates from type A to type B occurred in the presence of CO2, resulting in increased CO2 consumption. The TBAB semiclathrate formed at 2.57 mol % TBAB and 282.15 K was found to be a suitable system for CO2 capture.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Katie Gristwood, Saimir Luli, Kenneth S. Rankin, James C. Knight
Summary: This study evaluated the fluorescence properties of three meso-substituted BODIPY analogues in combination with zirconium-89 and demonstrated the potential of BODIPY in SCIFI applications.
CHEMICAL COMMUNICATIONS
(2022)
Correction
Multidisciplinary Sciences
Marcel Schweiker, Amar Abdul-Zahra, Maira Andre, Farah Al-Atrash, Hanan Al-Khatri, Rea Risky Alprianti, Hayder Alsaad, Rucha Amin, Eleni Ampatzi, Alpha Yacob Arsano, Montazami Azadeh, Elie Azar, Bannazadeh Bahareh, Amina Batagarawa, Susanne Becker, Carolina Buonocore, Bin Cao, Joon-Ho Choi, Chungyoon Chun, Hein Daanen, Siti Aisyah Damiati, Lyrian Daniel, Renata De Vecchi, Shivraj Dhaka, Samuel Dominguez-Amarillo, Edyta Dudkiewicz, Lakshmi Prabha Edappilly, Jesica Fernandez-Aguera, Mireille Folkerts, Arjan Frijns, Gabriel Gaona, Vishal Garg, Stephanie Gauthier, Shahla Ghaffari Jabbari, Djamila Harimi, Runa T. Hellwig, Gesche M. Huebner, Quan Jin, Mina Jowkar, Renate Kania, Jungsoo Kim, Nelson King, Boris Kingma, M. Donny Koerniawan, Jakub Kolarik, Shailendra Kumar, Alison Kwok, Roberto Lamberts, Marta Laska, M. C. Jeffrey Lee, Yoonhee Lee, Vanessa Lindermayr, Mohammadbagher Mahaki, Udochukwu Marcel-Okafor, Laura Marin-Restrepo, Anna Marquardsen, Francesco Martellotta, Jyotirmay Mathur, Grainne McGill, Isabel Mino-Rodriguez, Di Mou, Bassam Moujalled, Mia Nakajima, Edward Ng, Marcellinus Okafor, Mark Olweny, Wanlu Ouyang, Ana Ligia Papst de Abreu, Alexis Perez-Fargallo, Indrika Rajapaksha, Greici Ramos, Saif Rashid, Christoph F. Reinhart, Ma. Isabel Rivera, Mazyar Salmanzadeh, Karin Schakib-Ekbatan, Stefano Schiavon, Salman Shooshtarian, Masanori Shukuya, Veronica Soebarto, Suhendri, Mohammad Tahsildoost, Federico Tartarini, Despoina Teli, Priyam Tewari, Samar Thapa, Maureen Trebilcock, Jorg Trojan, Ruqayyatu B. Tukur, Conrad Voelker, Yeung Yam, Liu Yang, Gabriela Zapata-Lancaster, Yongchao Zhai, Yingxin Zhu, Zahra Sadat Zomorodian
Article
Thermodynamics
Mohamed Dardir, Fariborz Haghighat, Mohamed El Mankibi
SCIENCE AND TECHNOLOGY FOR THE BUILT ENVIRONMENT
(2020)
Article
Construction & Building Technology
Gabriel Remion, Bassam Moujalled, Mohamed El Mankibi
Summary: The measurement of natural airflows in multi-zone passive-stack ventilated dwellings is challenging. A new protocol based on the Kalman filter and a concentration correction procedure was proposed to address this issue. The results of laboratory testing showed that the new protocol was more accurate and less sensitive compared to the traditional 2-points decay method.
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Yousra Laaroussi, Myriam Bahrar, Eva Zavrl, Mohamed El Mankibi, Uros Stritih
SUSTAINABLE CITIES AND SOCIETY
(2020)
Article
Construction & Building Technology
Y. Laaroussi, M. Bahrar, M. El Mankibi, A. Draoui, A. Si-Larbi
SUSTAINABLE CITIES AND SOCIETY
(2020)
Article
Thermodynamics
Karthik Panchabikesan, Fariborz Haghighat, Mohamed El Mankibi
Summary: Occupant schedules and energy-use behavior are crucial inputs for building energy simulations and management. This study proposes a data-driven framework for extracting distinct occupant schedules in residential buildings and develops linear and logistic regression models to represent occupant activity level and presence/absence state. The research demonstrates different occupant patterns in buildings and shows better prediction results for lighting and plug load consumption data in terms of energy usage.
Article
Construction & Building Technology
Bassam Moujalled, Valerie Leprince, Sylvain Berthault, Andres Litvak, Nolwenn Hurel
Summary: This paper aims to quantify and describe the changes in building airtightness over different time scales, identifying factors such as the number of levels, roof type, and building material that may explain variations. Results show a slight increase in air permeability over time, without necessarily correlating with the increase in the number of leakages detected.
ENERGY AND BUILDINGS
(2021)
Review
Construction & Building Technology
A. Melois, F. R. Carrie, M. El Mankibi, B. Moujalled
Summary: This study provides an overview of the sources of measurement uncertainty in building fan pressurization tests, including errors from models, measuring equipment, protocols, and analysis. The review shows that some sources can be quantified or controlled, but there are still many unanswered questions and research gaps.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Maria Jose Rueda Lopez, Bassam Moujalled, Gaelle Guyot, Benjamin Golly, Michel Ondarts, Frederic Wurtz, Evelyne Gonze
Summary: This article evaluates thermal comfort using various indicators based on temperature and humidity, and found that all tested indicators are sensitive to occupancy scenario and season. The results suggest that using a time step of 1 hour is sufficient for calculating temperature and humidity-based comfort indicators in low-energy houses, even with low-cost sensors.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Bassam Moujalled, Benedikt Kolsch, Adeline Melois, Valerie Leprince
Summary: This paper examines the comparison of air permeability indicators used in various countries and seeks to establish default conversion equations between these indicators. The study finds that the specific air leakage rate per envelope area and the air change rate are the most frequently used indicators, and the building's compactness is a key geometric parameter for characterising the relationship between these indicators.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Hajar Benhmidou, Zaid Romani, Mohamed El Mankibi, Abdeslam Draoui
Summary: This study focused on representing the energy state of an existing building in Morocco using in-situ measurements. Infrared thermography was used for thermal diagnosis and TRNSYS software for energy modeling. A comparative study was conducted on different scenarios of the building to analyze cooling and heating energy needs with and without a concrete frame.
ADVANCES IN BUILDING ENERGY RESEARCH
(2021)
Proceedings Paper
Architecture
Adeline Bailly Melois, Anh Dung Tran, Mohamed El Mankibi, Francois Remi Carrie, Bassam Moujalled, Gaelle Guyot
12TH NORDIC SYMPOSIUM ON BUILDING PHYSICS (NSB 2020)
(2020)
Article
Construction & Building Technology
Chao Zeng, Xiaoling Cao, Fariborz Haghighat, Yanping Yuan, Lubomir Klimes, Mohamed E. Mankibi, Mohamed Dardir
ENERGY AND BUILDINGS
(2020)
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)
