Article
Construction & Building Technology
Ankit Joshi, Faming Wang, Zhanxiao Kang, Bin Yang, Dongliang Zhao
Summary: This study presents a complete virtual three-dimensional model of human thermophysiological responses, which accurately predicts human responses under different environmental conditions. Through systematic validation, the model demonstrates good robustness and accuracy across various conditions.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Qing Zheng, Ying Ke, Hongbo Wang
Summary: This study presents a multi-segment thermoregulatory model that accurately predicts temperature distribution across the sleeping body under different thermal conditions. The model takes into account sleep stages and circadian rhythm, and shows improved accuracy compared to the standard wake-state model.
BUILDING AND ENVIRONMENT
(2023)
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
Chemistry, Physical
Agnieszka Greszta, Grazyna Bartkowiak, Anna Dabrowska, Eulalia Gliscinska, Waldemar Machnowski, Pawel Kozikowski
Summary: This study assessed the use of developed nonwoven inserts with aerogel/PCM microcapsules in cold protective clothing, aiming to improve thermophysiological comfort properties. The results showed that the use of aerogel reduced the thermal conductivity of the insert, while PCM microcapsules improved heat absorption and release. Therefore, the use of aerogel and PCM in cold protective clothing is an effective solution.
Article
Materials Science, Multidisciplinary
Mohamed Boutghatin, Yan Pennec, Bahram Djafari-Rouhani, Abdellatif Akjouj, Valerie Gaucher, Hayriye Gidik, Salim Assaf, Michele Carette, Vincent Thomy
Summary: Improving the radiative heating performance of textiles by incorporating a thin metallic layer with high reflectivity and nanoparticles in an asymmetric design can achieve a comfortable zone at different temperature ranges.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Construction & Building Technology
Jiawen Hu, Chengcheng Shan, Shiqing Zhao, Aili Zhang
Summary: Personalized regulation of the human thermal environment can save energy consumption while maintaining thermal comfort. This study provides a new method for classifying individuals based on their physiological thermoregulatory responses. The results show significant differences in physiological and perceptive responses among individuals after a cold step-change. This classification method has the potential to distinguish people with different thermal features.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Yin Tang, Hang Yu, Kege Zhang, Kexin Niu, Huice Mao, Maohui Luo
Summary: This study evaluates and compares the thermal comfort effectiveness and energy consumption of six different personal heating/cooling devices. The results show that the heating devices improve subjects' thermal sensation, but their energy efficiency varies greatly. Under hot conditions, desk and floor fans improve thermal accept-ability, while a ventilated cushion cannot enhance thermal comfort. Most subjects prefer heated cushions and floor fans.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Puyue Gong, Yuanzhi Cai, Zihan Zhou, Cheng Zhang, Bing Chen, Stephen Sharples
Summary: Thermal comfort prediction is crucial for maintaining indoor comfort and reducing energy consumption. Machine learning methods have been used to explore personal thermal comfort prediction, and it was found that spatial parameters significantly impact model accuracy. By considering spatial parameters, prediction accuracies have been significantly improved compared to conventional models.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Qing Zheng, Ying Ke, Hongbo Wang
Summary: This study comprehensively investigated the design factors of liquid circulating garments (LCG) and found that clothing insulation, pipe length, and cooling mode significantly impact heat stress alleviation, offering helpful guidelines for better thermal comfort and energy-saving strategies in hot environments.
ENERGY AND BUILDINGS
(2022)
Article
Chemistry, Physical
Elham Tavakkol, Sedigheh Borhani, Abolghasem Zeidaabadi Nezhad, Mohsen Shanbeh, Mohammad Ali Alsharif
Summary: This article presents an eco-friendly and cost-effective technique for producing personal thermal management textiles through the melt spinning of Polypropylene/Aluminum (PP/Al) compounds. The optimal diameter and filler loading of spherical Aluminum particles were determined to minimize thermal radiation transmittance. The PP/Al fabrics produced showed suitable wearability and durability properties for passive radiative heating clothing, with a significant increase in skin temperature.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Ankita Hazarika, Biplab K. Deka, Jaewoo Seo, Hoon Eui Jeong, Young-Bin Park, Hyung Wook Park
Summary: The article describes the fabrication of a low-power-consuming, self-powered wearable personal thermal management (PTM) device that provides thermotherapy through wireless heating and warmth preservation. The device is capable of reflecting almost all of the infrared radiation and has high impact resistance, making it suitable for use as smart body armor. It also demonstrates a potential self-heating ability by harvesting energy from human motion and wind.
Article
Engineering, Chemical
Jia-Xiu Wu, Ying-Chih Liao
Summary: A thermal comfort control model based on heat flux regulation was developed in this study to ensure thermal comfort in the human-clothing-environment system. By optimizing the control strategy for an electric heater using a mathematical model, skin temperature and sensible heat loss can be stably controlled within the standard thermal comfort range.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Construction & Building Technology
Jia Chao, Shaoxuan Li, Zhicheng Zhang, Menghan Wang, Wenzhuo Hou
Summary: The personalized environmental control system efficiently meets occupants' comfort needs. This study investigates the heating effect of personalized heating devices under different temperatures and identifies the best options. The personalized heating devices can directly enhance thermal sensation and skin temperature of targeted body segments, providing substantial comfort benefits.
INDOOR AND BUILT ENVIRONMENT
(2023)
Review
Metallurgy & Metallurgical Engineering
Tian Xiao-yu, Liu Wei-wei, Liu Jia-wei, Yu Bo, Zhang Jian
Summary: This paper reviews the studies on personal heating systems, introduces the different types of personal heating devices, and discusses the effects of personal heating on thermal comfort and the prediction models. This paper provides a guideline for choosing suitable heating equipment.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Thermodynamics
F. L. Zhu, Q. Q. Feng
Summary: Thermal radiation in clothing plays a crucial role in managing thermal comfort and heat transfer of the human body. The contradictions in traditional clothing regulation of human comfort are a key focus of current research, with the emerging Personal Radiative Thermal Management (PRTM) technologies providing new solutions for advanced clothing materials to enhance wearer comfort and reduce energy consumption.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
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)
Article
Construction & Building Technology
Faming Wang, Qihong Deng, Tze-Huan Lei, Xingming Wang, Alex Rui Wang
Summary: Electric fans are suggested for alleviating indoor heat stress, but existing biophysical models fail to consider cardiovascular impairment in older adults. This study highlights the importance of cardiovascular function in core temperature responses, showing that relying solely on sweating adjustment underestimates heat stress in older adults. Thus, using biophysical models to determine fan use threshold temperature for older adults during heatwaves is not recommended due to the lack of cardiovascular adjustment.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Yu Jiao, Yifan Yu, Hang Yu, Faming Wang
Summary: A field survey was conducted to investigate the thermal environment characteristics of transition spaces in elderly care facilities and their impacts on the elderly's thermal adaptation. The study found that the elderly's indoor thermal satisfaction improved the most when there was a temperature difference of 6 degrees C and 2 degrees C between the transition space and indoor environment in winter and summer, respectively. Designing a transition space with a semi-open external corridor and a temperature/humidity gradient from outdoors to indoors could help the elderly adapt to temperature through activities such as sunbathing and exercising.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Jinping Zhao, Faming Wang, Dengsong Ou, Binkan Zhou, Yuguo Li, Hanqing Wang, Qihong Deng
Summary: Through a simulated experiment of footbath, it was found that the skin temperature would increase while the core temperature would decrease after footbath. The higher the water temperature and the longer the footbath duration, the longer the core temperature would stay lower. The onset of sweating was inversely proportional to the water temperature. A relationship curve between sweating onset time and water temperature has been established to determine the optimal footbath conditions, which may facilitate sleep onset.
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
Chemistry, Multidisciplinary
Yan Zhang, Faming Wang, Lai Shi, Mengrou Lu, Keng-Jung Lee, Mackenzie Maurer Ditty, Yunhui Xing, Hong-Zhang He, Xi Ren, Si-Yang Zheng
Summary: Reactive oxygen species (ROS) generation for cell death induction is effective in cancer therapy. However, the limited therapeutic efficacy of ROS-based cancer treatment is due to challenges such as overexpression of antioxidants by tumor cells and low targeting efficiency of therapeutic agents. To address these issues, biomimetic Cu-Zn protoporphyrin IX nanoscale coordination polymers have been developed to inhibit antioxidants and initiate chemodynamic therapy (CDT). These nanoparticles show excellent homotypic targeting effect and can induce depletion of non-enzymatic antioxidants and generate cytotoxic hydroxyl radicals (center dot OH) for cancer treatment.
JOURNAL OF CONTROLLED RELEASE
(2023)
Review
Chemistry, Multidisciplinary
Xin Hu, Rujun Yu, Faming Wang, Zunfeng Liu, Hongyu Yang, Chaoji Chen, Yangling Li, Nuruzzaman Noor, Bin Fei
Summary: Transparent wood (TW)-based materials have attracted worldwide attention due to their superior physico-chemical-optical properties and sustainable nature, making them potential substitutes for glass and plastics. This article comprehensively summarizes the recent advancements in TW composites and coatings, focusing on seven specific functionalities: solar control, chromically-responsive, electrically conductive, shape-memory active, flame-retardant, electromagnetic interference shielding, and aesthetics. Additionally, potential applications of TW with these functionalities are discussed, along with the current challenges and future developments required for real-world applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Letter
Construction & Building Technology
Faming Wang
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Yinping Ou, Faming Wang, Jinping Zhao, Qihong Deng
Summary: This study systematically examined the core temperature responses of elderly individuals during prolonged heatwaves and developed a modified thermoregulatory model to predict survival time. The results showed that dehydration resulting from intense heat stress could lead to fatal classic heatstroke, and increased air temperature and humidity could shorten the survival duration. The developed model can accurately predict the core temperature responses of healthy elderly individuals exposed to extreme heat and aid in the selection of efficient heatstroke prevention measures suited to the elderly.
BUILDING AND ENVIRONMENT
(2023)
Article
Energy & Fuels
Wei Su, Zhengtao Ai, Jing Liu, Bin Yang, Faming Wang
Summary: Ventilation is crucial for maintaining good indoor air quality (IAQ), but inadequate ventilation is a common problem in many buildings due to the lack of natural or mechanical ventilation. Chinese guidelines during the COVID-19 pandemic recommend opening windows for natural ventilation in rooms without mechanical systems. This study examines the effectiveness of this method and explores the relationship between ventilation duration, frequency, and IAQ under different air change rates. The findings suggest that an acceptable IAQ can be achieved with recommended ventilation frequency when the air change rate is equal to or greater than 6 times per hour.
Article
Construction & Building Technology
Chan Lu, Lin Wang, Hongsen Liao, Bin Li, Qin Liu, Qin Li, Faming Wang
Summary: This study found that children's asthma is predominantly influenced by exposure to particulate matters and traffic-related air pollution (TRAP) during both the intrauterine and postnatal periods. The risk of asthma is higher during specific time windows of exposure to PM2.5, NO2, and PM10 during the prenatal and postnatal periods.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Zhe Li, Bing'an Pan, Bin Yang, Bin Zhou, Faming Wang
Summary: This study evaluated the applicability of two ice-bag cooling vests for healthcare workers wearing personal protective equipment (PPE) in outdoor settings. The results showed that the cooling vests could reduce sweat loss and skin temperature, providing some comfort relief. Cooling the back was found to be more effective, and gender differences disappeared after 30 minutes. These findings are important for protecting the health and safety of healthcare workers wearing PPE.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Yin Tang, Hang Yu, Hai Ye, Kege Zhang, Faming Wang, Huice Mao, Zi Wang
Summary: Clothing plays a role in the heat exchange between the human body and the environment, with varying thermal resistance across different body parts. Current standards lack the ability to estimate local clothing insulation, making it challenging for field studies and human experiments. This study proposes a method to estimate local insulation values based on overall insulation and presents its application in determining the insulation of ensembles. By developing prediction models based on thermal manikin tests, reference local insulation values can be obtained. This research provides standardized local clothing insulation values that can be used in heat transfer analysis and local thermal comfort research.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Chan Lu, Hongsen Liao, Lin Wang, Qin Li, Qin Liu, Faming Wang
Summary: A retrospective cohort study conducted in Changsha, China, found that prenatal exposure to meteorological factors, especially high temperatures and low wind speeds in early pregnancy, is associated with childhood asthma.
BUILDING AND ENVIRONMENT
(2023)
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)