Article
Construction & Building Technology
Theofanis Psomas, Despoina Teli, Sarka Langer, Paula Wahlgren, Pawel Wargocki
Summary: The study found that low indoor relative humidity is a realistic issue in Swedish dwellings, especially in apartments. This issue is more prevalent in dwellings with higher indoor temperature, smaller volume, higher ventilation rate, lower number of occupants, constructed mainly after 1985, located in city suburbs and in the northern parts of the country.
BUILDING AND ENVIRONMENT
(2021)
Article
Construction & Building Technology
Ann Marie Coggins, Nina Wemken, Asit Kumar Mishra, Martin Sharkey, Liam Horgan, Hilary Cowie, Emmanuel Bourdin, Brian McIntyre
Summary: This study evaluated the indoor air quality and occupant satisfaction in 14 deep energy retrofitted Irish residences. The study found higher pollutant concentrations in bedrooms, indicating potential under-ventilation. Additionally, elevated formaldehyde concentrations were detected in the homes, likely due to building materials. However, most homes had temperature and humidity levels within comfort limits.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Jodelle Degois, Marc Veillette, Patrick Poulin, Benoit Levesque, Daniel Aubin, Boualem Ouazia, Mario Brisson, Francois Maltais, Caroline Duchaine
Summary: Indoor air quality is crucial for public health, with ventilation systems playing a significant role in microbial communities in extreme environments. The study found that different ventilation strategies can impact the concentration and diversity of indoor microbiota significantly.
Article
Construction & Building Technology
Deng Tingxuan, Shen Xiong, Cheng Xiaojie, Liu Junjie
Summary: This study conducted a comprehensive study on indoor air quality in 30 dwellings in the temperate zone in China. The results showed that short-term measurements exceeded the Chinese standard in formaldehyde and benzene concentration in spring and winter, as well as PM2.5 concentration; long-term monitoring revealed seasonal variation in the night-time air change rate in bedrooms, influenced by CO2 concentration, indoor temperature, and outdoor PM10 concentration.
INDOOR AND BUILT ENVIRONMENT
(2021)
Article
Environmental Sciences
Yen-Ching Chen, Pei-Iun Hsieh, Jia-Kun Chen, Emily Kuo, Hwa-Lung Yu, Jeng-Min Chiou, Jen-Hau Chen
Summary: This study demonstrates how indoor air quality in areas using clean fuels affects the associations between long-term exposure to low-level air pollutants and cognition. The results show that an increase in PM2.5 is associated with a decline in cognitive abilities such as memory, attention, and executive function, while an increase in O-3 is associated with improved cognition. These associations are more significant in participants with poor ventilation or shorter daily indoor time. Additionally, the study found that the impact of O-3 on global cognition is more pronounced compared to the increase in different particulate matter exposures.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Carla Viegas, Marta Dias, Ana Monteiro, Tiago Faria, Joana Lage, Elisabete Carolino, Liliana Aranha Caetano, Anita Quintal Gomes, Susana Marta Almeida, Sandra Cabo Verde, Joana Belo, Nuno Canha
Summary: This study found that the majority of indoor air bacteria in Portuguese dwellings came from our own bodies, while prevalent indoor fungi included Aspergillus sections such as Chrysosporium spp. and Penicillium spp. Additionally, some fungal species found in sleeping environments showed reduced susceptibility to antifungal drugs, and indicators of harmful fungal contamination were observed in these environments.
ENVIRONMENTAL POLLUTION
(2021)
Article
Construction & Building Technology
Mahmoud Fathy ElSharkawy
Summary: This study aimed to assess indoor air quality (IAQ) by monitoring various air pollutants in selected homes in the Eastern Province of Saudi Arabia. The findings showed that the highest levels of PM10, CO2, and NO2 were found in kitchens, while the highest level of CO was found in living rooms. PM10 levels exceeded air quality guidelines in homes near industrial and agricultural areas.
INDOOR AND BUILT ENVIRONMENT
(2023)
Article
Engineering, Multidisciplinary
Faramarz Farahi
Summary: This article reports two applications of a sub-category of air cleaning devices based on soft ionization. The experiments showed that using a bipolar ionizer in conjunction with a MERV 10 filter significantly improved the removal rate of fine and ultrafine particles. In addition, introducing ions into the air enhanced the inactivation rate of aerosolized SARS-CoV-2.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Construction & Building Technology
Rosana Caro, Juan Jose Sendra
Summary: This study evaluates the energy performance and indoor environmental quality of listed housing within the conservation area of Seville, Spain, in actual winter conditions. Findings reveal significant health and environmental issues, such as the need for intensive heating system use despite mild winters and high CO2 concentration and indoor humidity levels.
ENERGY AND BUILDINGS
(2021)
Article
Environmental Sciences
Antonio Lopez, Vicent Yusa, Eva Villoldo, Francisca Corpas-Burgos, Clara Coscolla
Summary: This study assessed the inhalation risk associated with indoor pesticide concentrations in the dwellings of lactating mothers in the Valencian Region, Spain. Most pesticide exposures were below health standards, but the cancer risk for cypermethrin and permethrin in infants was found to be higher than acceptable levels.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Fernando de Frutos, Teresa Cuerdo-Vilches, Carmen Alonso, Fernando Martin-Consuegra, Borja Frutos, Ignacio Oteiza, Miguel Angel Navas-Martin
Summary: This article analyzes the indoor air quality and power consumption patterns of 12 dwellings in the outskirts of Madrid during Spain's state of emergency. The study found that household initial conditions, composition, and habits had an impact on the variations, and different daily activity patterns also affected power consumption modes.
Article
Energy & Fuels
Suchi Priyadarshani, Roshan R. Rao, Monto Mani, Daniel Maskell
Summary: Optimum indoor humidity is crucial for comfort and overall well-being. This study proposes a new computational approach for describing and evaluating humidity-related skin comfort in buildings. The study validates the computational model through real-time monitoring and a comfort survey. Results show that an increase in skin wettedness increases the thermal sensation vote, and clothing types influence comfort. Including humidity-related parameters in building simulation tools contributes to improved indoor comfort.
Article
Environmental Sciences
Bin Zhao, Shanshan Shi, John S. Ji
Summary: The WHO AQGs 2021 incorporates stricter guidelines for air pollution, including both outdoor and indoor air quality. The challenges to meeting the indoor air quality guidelines are discussed. A treatment solution that combines efforts from policy, technology, and education is suggested.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Justin Y. Y. Lee, Yanhao Miao, Ricky L. T. Chau, Mark Hernandez, Patrick K. H. Lee
Summary: AI models were developed to estimate real-time and near-future concentrations of bioaerosols and particulate matter in indoor environments. The models utilized physical and chemical data from air quality sensors and fluorescence observations of bioaerosols. The study demonstrated the effectiveness of AI-based methods in improving indoor environmental quality.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Juan Wang, Dan Norback
Summary: The study found that indoor air quality issues mainly focused on room temperature, air humidity, and room air exchange rate. The research also indicated that higher ventilation and concrete slab foundation with underlying thermal insulation can improve indoor air quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)