Building and Environment最新文献_第7页

Thermal comfort in open public spaces – A critical review in Indian context 开放式公共空间的热舒适度--印度背景下的重要评论

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-28 DOI: 10.1016/j.buildenv.2024.112239

Jagrati Sehgal, Gireendra Kumar

{"title":"Thermal comfort in open public spaces – A critical review in Indian context","authors":"Jagrati Sehgal, Gireendra Kumar","doi":"10.1016/j.buildenv.2024.112239","DOIUrl":"10.1016/j.buildenv.2024.112239","url":null,"abstract":"<div><div>Outdoor thermal comfort (OTC) studies have gained global attention in the last two decades, with noteworthy results of increasing heat stress. Heat Issues in urban areas disturb the thermal balance and create a dilapidated urban living environment. The thermal environment is quite influencing in promoting open public spaces. India, a tropical country, deals with intense heat issues periodically throughout the year. There has been an increasing trend of OTC studies in India in the last decade. It is necessary to chronicle the state of knowledge and the current circumstances in the country.</div><div>The study aims to investigate, analyze, and summarize the ongoing scenario of OTC studies in the Indian context. This systematic literature review (SLR) is a comprehensive analysis of 38 studies obtained and reviewed through five stages. It investigates the available database to understand the thermal environment, thermal parameters, perception, preference, and overall thermal comfort in open spaces between different built forms. The outcome expansively summarises the various parameters, approaches, and scenarios to assess OTC. The findings of the study encourage the annual assessment of OTC conditions with consideration of several aspects of different climatic zones. Standardization in the process of OTC assessment and the development of OTC models in the Indian Scenario is found to be of utmost importance. Thermal neutrality values were found to vary between 19 °C - 32 °C over several locations. The in-depth discussion has addressed the precise gaps and future scope, specifically in the Indian context.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112239"},"PeriodicalIF":7.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time and environmental conditions for heat stress recovery based on human physiological responses: Developing a predictive model 基于人体生理反应的热应激恢复时间和环境条件：开发预测模型

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-26 DOI: 10.1016/j.buildenv.2024.112228

Liangyue Shang , Baizhan Li , Shan Zhou , Chenqiu Du , Runming Yao , Yanfeng Zhu , Guangyi Chen , Peiping Zheng , Hong Liu

{"title":"Time and environmental conditions for heat stress recovery based on human physiological responses: Developing a predictive model","authors":"Liangyue Shang , Baizhan Li , Shan Zhou , Chenqiu Du , Runming Yao , Yanfeng Zhu , Guangyi Chen , Peiping Zheng , Hong Liu","doi":"10.1016/j.buildenv.2024.112228","DOIUrl":"10.1016/j.buildenv.2024.112228","url":null,"abstract":"<div><div>Breaks can protect workers exposed to high temperatures from heat stress and other health risks. However, the most suitable recovery conditions and how the body physiologically responds to them remain uncertain. The aim of this study was to provide scientific evidence of the human physiological response to step changes in environmental parameters of recovery stage through climate chamber experiments and to develop a predictive model. Volunteer subjects experienced 60 min of walking exercise in air temperatures of 32 and 36 °C, RH 60%, and an air velocity of 0.2 m/s to form two heat stress levels, and then moved into a resting space under designated environmental conditions, such as a standard effective temperature (SET) range of 15.6–26.0 °C. The results showed that the recovery time for physiological parameters decreased with decreasing SET, accompanied by a simultaneous increase in thermal discomfort rate. Correlation analysis suggested that recovery time was related to the physiological stress index at the beginning of the recovery phase (PSI<sub>0</sub>; <em>r</em> = 0.86) and the SET (<em>r</em> = 0.75) of the recovery environment. A predictive model of heat stress recovery time was developed based on PSI<sub>0</sub> and SET, with a determination coefficient of 0.9. According to the model, a SET of 18.8–24.9 °C was suitable for people with high heat stress requiring full recovery in 15–30 min. The research findings contribute to the regulation of health and safety in high-temperature working environments and the operation of restroom environmental conditions.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112228"},"PeriodicalIF":7.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of glass salt deposition on indoor environment and building energy performance in salt-fog climate 玻璃盐沉积对盐雾气候下室内环境和建筑能效的影响

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-26 DOI: 10.1016/j.buildenv.2024.112236

Huijun Mao, Qinglin Meng, Junsong Wang

{"title":"Effect of glass salt deposition on indoor environment and building energy performance in salt-fog climate","authors":"Huijun Mao, Qinglin Meng, Junsong Wang","doi":"10.1016/j.buildenv.2024.112236","DOIUrl":"10.1016/j.buildenv.2024.112236","url":null,"abstract":"<div><div>The salt deposition alters the thermo-optical performance of building glasses in the salt-fog climate, but the impact of salt deposition on indoor environment and building energy consumption remains to be elucidated. This study conducted a systematic investigation into the heat flux through envelopes, the indoor thermal and daylight environments, and the building energy consumption in different thermal climate zones. The convective heat transfer flux (CHTF) remained relatively constant regardless of the deposition amount, and the discrepancy was greater in the Hot Summer and Warm Winter (HSWW) and Cold zones, but less in the Temperature and Hot Summer and Cold Winter (HSCW) zones. The transmitted solar radiation (TSR) exhibited a decline in various zones with the deposition amounts, with salt deposition showing the greatest impact in HSWW zone. Additionally, the CHTF and TSR were linearly related to the deposition amount, with salt deposition exerting a greater influence on TSR than CHTF. The salt deposition enhanced the indoor thermal comfort in all climate zones during summer, as well as that in HSWW and Temperature zones during winter; however, the indoor thermal comfort in Cold and HSCW zones during winter was worsen. Concurrently, the indoor daylighting effect also deteriorated. The salt deposition reduced cooling energy consumption, but led to higher heating and lighting energy consumption, and both the reduction and growth were proportional to the salt deposition amount. It reduced the building energy consumption in regions with high cooling demand (e.g., HSWW zone), while simultaneously increased the building energy consumption in regions with high heating demand (e.g., Cold zone).</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112236"},"PeriodicalIF":7.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of the correlated colour temperature of light on thermal sensation in the built environment: A systematic review and meta-analysis 光的相关色温对建筑环境中热感觉的影响：系统回顾与荟萃分析

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-26 DOI: 10.1016/j.buildenv.2024.112235

Zhongzhe Li , Runming Yao , Vincenzo Costanzo , Chenqiu Du , Baizhan Li

{"title":"The effects of the correlated colour temperature of light on thermal sensation in the built environment: A systematic review and meta-analysis","authors":"Zhongzhe Li , Runming Yao , Vincenzo Costanzo , Chenqiu Du , Baizhan Li","doi":"10.1016/j.buildenv.2024.112235","DOIUrl":"10.1016/j.buildenv.2024.112235","url":null,"abstract":"<div><div>Recently, the effect of the correlated colour temperature (CCT) of light on human thermal sensation has drawn much attention from the built environment area because of its potential application to change indoor comfortable temperature set points and save energy in buildings. Many studies have been conducted on this topic, and the results have proved inconsistent, making them difficult to use in actual practice. To further understand the validity and application range of the effect, it is urgent to research and reflect on a heterogenous selection of relevant studies. Thus, this paper aims to conduct a systematic review of existing studies, investigate the reasons for heterogeneity and explore the effect of moderators on experimental results. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method was used for the systematic review, while the method of Meta-analysis was utilised to investigate the reasons for heterogeneity and the effect of moderators. The meta-analysis found that a higher CCT can lead to a cooler thermal sensation, while environmental factors, such as the background thermal environment, temperature and exposure duration, moderate the effect's magnitude. The results of the meta-analysis suggest that in the thermally neutral environment, the effect of CCT on thermal sensation is most significant. Meanwhile, the magnitude of the effect diminishes with the duration of exposure. For the first time, this study explains the reasons for the heterogeneity of existing studies and reveals the influence of moderators on the thermal effect of CCT.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112235"},"PeriodicalIF":7.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of supervised machine learning regression models for CFD-based surrogate modelling in indoor airflow field reconstruction 评估基于 CFD 的室内气流场重建代用模型的监督机器学习回归模型

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-25 DOI: 10.1016/j.buildenv.2024.112173

Xueren Li , Weijie Sun , Chao Qin , Yihuan Yan , Liwei Zhang , Jiyuan Tu

{"title":"Evaluation of supervised machine learning regression models for CFD-based surrogate modelling in indoor airflow field reconstruction","authors":"Xueren Li , Weijie Sun , Chao Qin , Yihuan Yan , Liwei Zhang , Jiyuan Tu","doi":"10.1016/j.buildenv.2024.112173","DOIUrl":"10.1016/j.buildenv.2024.112173","url":null,"abstract":"<div><div>Fast and reliable prediction of indoor airflow distribution is critical for indoor environment control. While neural networks (NN), often interchangeably referred to as Back Propagation Neural Networks (BPNNs), are popular for airflow predictions, optimising these models is challenging due to their ”black box” nature and complex network structures. This study explores alternative robust regression models, including decision-tree-based models (e.g., XGBoost, LightGBM, Random Forest) and Support Vector Regression (SVR), for predicting indoor airflow. Two BPNN structures were initially developed to evaluate feasibility of NN models. BPNN A was trained using airflow velocities from two inlets as input neurons to directly predict the airflow velocity distribution within the domain. BPNN B was trained additionally with spatial information, including space samples and boundary wall data. Higher-dimensional training structures of BPNN B were applied to decision tree-based models and SVR to assess their capability in predicting non-linear airflow patterns. Results indicated that BPNN A achieved the highest accuracy, while the inclusion of higher-dimensional data in BPNN B led to decreased accuracy. Among all decision-tree-based models, XGBoost demonstrated the greatest potential, achieving an R<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> above 99.5% and predictive errors below 10%. XGBoost also outperformed both BPNN models in speed, being 15.78 times faster than BPNN A and 252 times faster than BPNN B. The interpretability of XGBoost was further explored by analysing feature importance, which helps identify the most influential input variables while predicting the airflow velocity. This analysis is expected to offer an enhanced understanding of boundary conditions leading to optimised indoor environment strategy.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112173"},"PeriodicalIF":7.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new personalized environment control system for hospital beds with design optimization by Taguchi-based grey relational analysis 基于田口灰色关系分析的新型个性化病床环境控制系统与优化设计

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-25 DOI: 10.1016/j.buildenv.2024.112206

Wei Su , Zhengtao Ai , Bin Yang

{"title":"A new personalized environment control system for hospital beds with design optimization by Taguchi-based grey relational analysis","authors":"Wei Su , Zhengtao Ai , Bin Yang","doi":"10.1016/j.buildenv.2024.112206","DOIUrl":"10.1016/j.buildenv.2024.112206","url":null,"abstract":"<div><div>The current ward environments consume excessive energy and fail to meet the personal comfort and health needs of patients. A promising solution is to create a personalized bed micro-environment and then extend the ward set-point temperature range. However, there is currently no suitable bed environment control system. This study proposes a novel bedside integrated system with three perforated panels that supplies conditioned air from different directions and prevents direct airflow towards the patient's head region. The system design was optimized using Taguchi-based grey relational analysis (GRA), with predicted mean vote (PMV), draft risk (DR), and personal exposure effectiveness (PEE) considered as response variables. The design variables included supply air temperature, airflow rate, and supply air angles. Taguchi's L<sub>16</sub> (4<sup>4</sup>) orthogonal array was employed for the experimental design. The results demonstrate that a low-velocity cold air lake can form above the bed, with the maximum velocity near the patient's head at only 0.2 m/s. In a 28 °C ward, the PMV, maximum DR, and PEE at the bed micro-environment are 0.13, 14.1 %, and 0.67, respectively. This implies that the proposed bed environment control system has the potential to provide both comfort and health benefits while reducing energy consumption. After optimization, the optimal supply air temperature, airflow rate, angles of top panel and side panels are 22 °C, 25 L/s, 0° and 45°, respectively, with an improvement of 5.8 % in the grey relational grade. This study provides a new solution for creating a comfortable and healthy ward environment in an energy-efficient manner.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112206"},"PeriodicalIF":7.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Field evaluation of the efficacy of passive radiative cooling infrastructure: A case study in Phoenix Arizona 被动辐射冷却基础设施功效的实地评估：亚利桑那州凤凰城案例研究

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-24 DOI: 10.1016/j.buildenv.2024.112226

David J. Sailor , Gina Fagliarone , Tim Hebrink , Deepak Amaripadath

{"title":"Field evaluation of the efficacy of passive radiative cooling infrastructure: A case study in Phoenix Arizona","authors":"David J. Sailor , Gina Fagliarone , Tim Hebrink , Deepak Amaripadath","doi":"10.1016/j.buildenv.2024.112226","DOIUrl":"10.1016/j.buildenv.2024.112226","url":null,"abstract":"<div><div>Radiative properties of shade structures affect their surface temperatures, sensible heat fluxes and longwave and shortwave radiation exchange. In fact, structures with high solar reflectance and thermal emittance have the potential to remain below ambient air temperatures, convecting sensible heat from the air to the surface and then radiating that heat to space—a sort of radiant heat pump.</div><div>We explore cooling benefits of urban surfaces with high solar reflectance and high thermal emittance radiative cooling films through a field measurement campaign in Phoenix Arizona, USA. The tested films have solar reflectance and selective thermal emittance (in wavelengths 8–13 μm) close to 95 %. We applied films in both before-after and control-test experimental designs on thin metal roofs of park shade structures. We measured surface temperatures, surface heat fluxes, upward- and downward-welling longwave and shortwave radiation, and local weather conditions.</div><div>Results demonstrate the ability of radiant cooling films to reduce surface temperatures on hot days below ambient air temperatures. Test surfaces with cooling films were an average of 7 °C cooler than control shelter surfaces over the diurnal cycle, reducing sensible heat fluxes into the environment by up to 80 %, and lowering mean radiant temperatures for pedestrians using the shelters by more than 3 °C. It was also observed that the sum of the net reflected shortwave and emitted longwave radiation over the diurnal cycle can exceed the total incident longwave and shortwave radiation on the surface, demonstrating the ability of these materials to radiatively “pump” heat out of the city.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112226"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction and visualization of 3D wake field of a rectangular high-rise building in tropical island cities based on UAV measurements 基于无人机测量的热带岛屿城市矩形高层建筑三维尾流场预测与可视化

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-24 DOI: 10.1016/j.buildenv.2024.112218

Bin Huang , Jinke Liu , Zhengnong Li , Xiangjun Wang , Xijie Liu , Jinshuang Dong , Qiurui Cai , Ou Pu , Terigen Bao

{"title":"Prediction and visualization of 3D wake field of a rectangular high-rise building in tropical island cities based on UAV measurements","authors":"Bin Huang , Jinke Liu , Zhengnong Li , Xiangjun Wang , Xijie Liu , Jinshuang Dong , Qiurui Cai , Ou Pu , Terigen Bao","doi":"10.1016/j.buildenv.2024.112218","DOIUrl":"10.1016/j.buildenv.2024.112218","url":null,"abstract":"<div><div>It is especially crucial to utilize measured data as samples to increase the accuracy of wind field prediction. However, scarce wake field measured data of high-rise buildings leads to the deviation between prediction results and the actual wake distribution. In this study, a six-rotor unmanned aerial vehicle wind measurement system (UAVWMS) equipped with an anemometer is used to measure the wake field of a rectangular high-rise building in a tropical island city, and the characteristics of fluctuating wind velocity spectra and distribution patterns of the wind velocity and turbulence intensity in the wake region are analyzed; the Kriging method is adopted to predict and visualize the three-dimensional (3D) wake field based on the measured data from UAVWMS. The results show that the exponential law is better than the logarithmic law in fitting the incoming wind velocity profile in the tropical island city. The measured points in the wake region, located near the central axis of the building, exhibit a pronounced reduction in wind velocity and an increase in turbulence intensity compared to those in the incoming region. Compared to the incoming wind velocity spectra and empirical spectra, the peak frequencies of wake wind velocity spectra shift to the high-frequency band. In addition, the wake wind velocity spectra are lower in the low-frequency band and higher in the high-frequency band. When designing a measured scheme based on UAVWMS, it's crucial to place measured points surrounding the target spatial wake field as much as possible. It helps enhance the accuracy of predicting wind parameters within the 3D spatial wake field. The research results provide a theoretical reference for the measurement, prediction and visualization of the wake field of high-rise buildings in dense urban buildings.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112218"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and performance evaluation of an indoor thermal environment control algorithm incorporating MET estimation model with object detection 开发室内热环境控制算法并进行性能评估，将 MET 估算模型与物体检测相结合

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-24 DOI: 10.1016/j.buildenv.2024.112217

Ji Young Yun , Eun Ji Choi , Min Hee Chung , Tae Won Kim , Jin Woo Moon

{"title":"Development and performance evaluation of an indoor thermal environment control algorithm incorporating MET estimation model with object detection","authors":"Ji Young Yun , Eun Ji Choi , Min Hee Chung , Tae Won Kim , Jin Woo Moon","doi":"10.1016/j.buildenv.2024.112217","DOIUrl":"10.1016/j.buildenv.2024.112217","url":null,"abstract":"<div><div>As people increasingly spend time indoors, the significance of the indoor environment in influencing occupant quality of life is becoming more pronounced. Traditionally, indoor environment control primarily relied on fixed temperature settings, which failed to accommodate the diverse circumstances of occupants. This approach limited the creation of a comfortable indoor environment and the enhancement of energy efficiency. Consequently, there is growing interest in occupant-centric control (OCC), which integrates metabolic rate (MET) information, which is a critical factor in determining the thermal sensation of occupants. Previously, a method was developed to estimate MET by classifying occupant poses and detecting the objects they interact with from indoor images. This study aims to develop and experimentally validate an indoor thermal environment control algorithm (ITEC-algorithm) using the MET estimation model and assess its effectiveness and applicability in real building environments.</div><div>The performance evaluation revealed that the ITEC-algorithm significantly enhanced the comfort ratios, achieving improvements of up to 59% compared to the fixed temperature control and 28% compared to the control methods that only used the pose classification model for MET estimation. The energy consumption varied depending on the activity and control method, with a reduction of up to 88% compared to fixed temperature control. These results indicate that thermal comfort can be enhanced while minimizing unnecessary energy consumption by incorporating the MET of the occupants. Consequently, it has been confirmed that the ITEC-algorithm effectively improves thermal comfort by managing the MET of various occupants.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112217"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of photocatalytic efficiency of TiO2 applied over cement plaster for mitigating urban air pollutant: TVOC 评估在水泥抹灰上应用二氧化钛的光催化效率以减少城市空气污染物：TVOC

IF 7.1 1区工程技术

Building and Environment Pub Date : 2024-10-24 DOI: 10.1016/j.buildenv.2024.112223

Shweta Mishra , Indramani Dhada , Putul Haldar , Prathmesh Zende

{"title":"Evaluation of photocatalytic efficiency of TiO2 applied over cement plaster for mitigating urban air pollutant: TVOC","authors":"Shweta Mishra , Indramani Dhada , Putul Haldar , Prathmesh Zende","doi":"10.1016/j.buildenv.2024.112223","DOIUrl":"10.1016/j.buildenv.2024.112223","url":null,"abstract":"<div><div>Photocatalysis emerged as a prominent method for mitigating air pollution stemming from emissions of total volatile organic compounds (TVOCs) in both indoor and outdoor environments. Given the slow degradation rate of certain TVOCs, which pose health risks, including carcinogenicity, there is a pressing need for effective air purification strategies, particularly within built environments where individuals spend substantial amounts of time. This study delves into the efficacy of TiO<sub>2</sub> photocatalysis in reducing air pollutants when applied to building surfaces. Cement mortar samples, incorporating varied doses of TiO<sub>2</sub> ranging from 7.83E-03 g/cm<sup>2</sup> to 4.92E-02 g/cm<sup>2</sup>, were prepared and examined within batch reactors, both under sunlight exposure and in the absence thereof, to gauge their degradation rates towards TVOCs. Furthermore, surface characterization techniques were employed to explicate the microstructural properties of TiO<sub>2</sub>-coated plastered samples. The results obtained demonstrated the variation in the rate of degradation from 1.09E-04±0.1 % to 3.1E-4 ± 1.13 % min<sup>−1</sup>cm<sup>−2</sup> for various initial concentrations of total volatile organic compounds (TVOCs) in the range of 600 ppm to 2900 ppm over a period of 100 min. The selected approach demonstrated the maximum degradation rate constant of 5.2E-04 min<sup>−1</sup>cm<sup>−2</sup> corresponding to 15 % of TiO<sub>2</sub> dose by weight of cement. These findings underscore the promise of TiO<sub>2</sub> in purifying polluted air and advocate for its widespread implementation on building surfaces to enhance air quality.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"267 ","pages":"Article 112223"},"PeriodicalIF":7.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0