Опубликована: Янв. 1, 2024
Язык: Английский
Building and Environment, Год журнала: 2022, Номер 226, С. 109717 - 109717
Опубликована: Окт. 23, 2022
Despite the risk of transmission SARS-CoV-2, Spanish educational centers were reopened after six months lockdown. Ventilation was mostly adopted as a preventive measure to reduce virus. However, it could also affect indoor air quality (IAQ). Therefore, here we evaluate ventilation conditions, COVID-19 risk, and IAQ in secondary school university classrooms Toledo (central Spain) from November 2020 June 2021. examined by monitoring outdoor CO2 levels. CO2, occupancy hygrothermal parameters, allowed estimating relative SARS-CoV-2 (Alpha Omicron BA.1), Hr, under different scenarios, using web app COVID Riskairborne. Additionally, effect on evaluated measuring indoor/outdoor (I/O) concentration ratios O3, NO2, suspended particulate matter (PM). University classrooms, particularly mechanically ventilated one, presented better conditions than well thermal comfort conditions. The estimated Hr for ranged intermediate (with surgical masks) high (no masks, teacher infected). generally good all at ones, with I/O below unity, implying an origin gaseous pollutants, while source PM heterogeneous. Consequently, controlled mechanical systems are essential spaces, wearing well-fitting FFP2–N95 masks indoors is highly recommended minimize other airborne infectious diseases.
Язык: Английский
Процитировано
35
The Science of The Total Environment, Год журнала: 2023, Номер 899, С. 165581 - 165581
Опубликована: Июль 22, 2023
Язык: Английский
Процитировано
12
Indoor and Built Environment, Год журнала: 2025, Номер unknown
Опубликована: Апрель 13, 2025
Urban transformations have intensified the negative impacts of climate change on vulnerable communities. Social housing (SH) provided by Brazilian programme Minha Casa, Vida (MCMV) faces challenges with thermal stress and unsanitary conditions due to climatic inadequacies. Additionally, self-built expansions exacerbate these issues limiting natural ventilation solar access, leading discomfort, increased energy consumption health risks. This study utilized post-occupancy evaluation (POE) techniques, including questionnaires, morphological analyses, walkthroughs computational simulations assess impact unassisted comfort air renewal in horizontal SH developments located at Uberlândia city, Minas Gerais state. Findings indicated that 81.05% participant dwellers experienced heat 43.17% finding inadequate. Furthermore, indoor discomfort was 15.78% average higher than outdoor conditions, expanded units 14.9% poorer compared non-expanded ones. These results underscored substandard environment quality use, increasing understanding correlation between their environmental quality. The research benefits from loop learning POE instruments performance, providing insights for targeted interventions aimed improving resilience overall living conditions.
Язык: Английский
Процитировано
0
Sustainability, Год журнала: 2022, Номер 14(23), С. 15719 - 15719
Опубликована: Ноя. 25, 2022
Indoor air quality is a significant factor influencing occupant comfort, health and productivity. comfort its relationship to productivity are widely documented. Statistical correlation between the two has been highlighted in scientific literature. This paper investigates any unique correlations non-air parameters (such as lux level, temperature, noise level) indoor presents study investigating effect of environmental on was conducted by collecting data using remote sensors an online survey for responses twelve months. Data analysis performed Response Surface Analysis present mathematical relationships comfort. Results show that carbon dioxide up 600 ppm, VOC 25% (by volume) humidity 60% have positive impact Our research some parameters, such outdoor temperature levels, affect These results would enable built environment professionals design operate offices (subtropical desert climate) conducive
Язык: Английский
Процитировано
12
Building and Environment, Год журнала: 2024, Номер 263, С. 111870 - 111870
Опубликована: Июль 24, 2024
Язык: Английский
Процитировано
2
Air Quality Atmosphere & Health, Год журнала: 2024, Номер unknown
Опубликована: Март 26, 2024
Язык: Английский
Процитировано
2
Journal of Physics Conference Series, Год журнала: 2023, Номер 2600(8), С. 082006 - 082006
Опубликована: Ноя. 1, 2023
Abstract This paper resulted from several questions discussed between its human authors shortly after the public launch of OpenAI’s ChatGPT: Can a language model, trained on an unimaginably vast database, be able to resolve fundamental data inference and data-driven forecasting problems which have been ’typical’ research fare in building science domain? Is it possible that ’typically’ require user-intensive tools, such as performance simulation problem-specific machine learning models, can today addressed by ChatGPT manner seconds? If so, what does this mean for future science, let alone writing novel contributions academia? The entirety was produced with significant use ChatGPT. Four arbitrarily-selected case studies were extracted recent peer-reviewed journals reputable sources. tasked attempting infer same results publications using only each study’s input data. Not ChatGPT’s found relatively credible, communicate instantly academic language. From start finish, paper, initial brainstorming final editing, completed no more than 8 human-hours (human) authors. content is original has not published previously.
Язык: Английский
Процитировано
4
Journal of Advanced Research in Applied Mechanics, Год журнала: 2024, Номер 120(1), С. 99 - 109
Опубликована: Июль 10, 2024
This project shows the development of an automated exhaust fan for a modern kitchen with IoT notification system better air ventilation lower electrical consumption and cheaper installation costs. Utilizing as will significantly cost maintenance. The carry process removing hot from so that cooler surrounding temperatures can be achieved. application microcontroller allow higher energy efficiency daily cooking appliance usage. Then, DHT22 temperature sensor input which detect precise air. automatically turn ON when it detects is increased 33℃. However, sent to user through Blynk Application increasing achieved 37℃ while buzzer alert people in house. Next, AC voltage controller help regulate speed according more saved during long At end this project, outcome product become used various types households already have wall-mounted fan. Moreover, users able install whole their due low maintenance Lastly, monthly bill reduced.
Язык: Английский
Процитировано
0
Research Square (Research Square), Год журнала: 2024, Номер unknown
Опубликована: Июль 17, 2024
Язык: Английский
Процитировано
0
Journal of sensors and sensor systems, Год журнала: 2024, Номер 13(2), С. 219 - 226
Опубликована: Авг. 2, 2024
Abstract. The measurement of air quality, particularly the concentration carbon dioxide (CO2), has gained significant interest due to increased public health awareness. Elevated concentrations CO2 in have been linked negative effects on cognitive functions and directly correlate with quality indoor air. This work presents prototype a miniaturized sensor module designed for sensing utilizes two-chamber photoacoustic concept features compact design combining an absorption cell wafer-bonded detector based silicon MEMS (micro-electro-mechanical systems) microphone technology. CO2-filled chip uses effect is able detect pressure oscillations within enclosed volume generated by modulated infrared (IR) light molecules. complete measures only 9×13×7.8 mm3 used smallest sensors reported date. Experimental characterization showed that achieves detection limit 81 ppm exhibits response time τ63 53 s. size performance characteristics make proposed suitable applications monitoring.
Язык: Английский
Процитировано
0