Intelligent operation, maintenance, and control system for public building: Towards infection risk mitigation and energy efficiency

Sustainable Cities and Society, Journal Year: 2023, Volume and Issue: 93, P. 104533 - 104533

Published: March 16, 2023

Language: Английский

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A hierarchical HVAC optimal control method for reducing energy consumption and improving indoor air quality incorporating soft Actor-Critic and hybrid search optimization

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 302, P. 118118 - 118118

Published: Jan. 31, 2024

Language: Английский

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Enhanced CO₂ Sensing by Oxygen Plasma-Treated Perovskite–Graphene Nanocomposites

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(2), P. 830 - 839

Published: Feb. 6, 2024

Carbon dioxide (CO2) is a major greenhouse gas responsible for global warming and climate change. The development of sensitive CO2 sensors crucial environmental industrial applications. This paper presents novel sensor based on perovskite nanocrystals immobilized graphene functionalized with oxygen plasma treatment. impact this post-treatment method was thoroughly investigated using various characterization techniques, including Raman spectroscopy, X-ray diffraction, photoelectron spectroscopy. detection at parts per million (ppm) levels demonstrated that the hybrids subjected to 5 min treatment exhibited 3-fold improvement in sensing performance compared untreated layers. Consequently, capability oxygen-treated samples showed limit quantification 6.9 22.9 ppm, respectively. Furthermore, influence ambient moisture also evaluated, revealing significant effect

Language: Английский

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A New Tailored Approach to Calculate the Optimal Number of Outdoor Air Changes in School Building HVAC Systems in the Post-COVID-19 Era

Energies, Journal Year: 2024, Volume and Issue: 17(11), P. 2769 - 2769

Published: June 5, 2024

Air conditioning systems can play a positive or negative role in the spread of COVID-19 infection. The importance sufficient outdoor air changes buildings was highlighted by World Health Organization, therefore these should be guaranteed mechanical ventilation adequate systems. proposed case study concerns optimal number to limit contagion for school building Central Italy. Wells–Riley model is used assess risk airborne infection, while energy consumption calculated dynamic simulation software. scope paper offers an innovative method define strategy building’s HVAC system design reduce infection with limited increases and greenhouse gas emissions. Results show that desirable approach one which same low value set all rooms. This new results significant savings, compared most common ones (setting high rates rooms) counteract Finally, zero-emission target verified introducing suitable photovoltaic offset pollutant

Language: Английский

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Zonal demand-controlled ventilation strategy to minimize infection probability and energy consumption: A coordinated control based on occupant detection

Environmental Pollution, Journal Year: 2024, Volume and Issue: 345, P. 123550 - 123550

Published: Feb. 12, 2024

Language: Английский

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Investigation of pathogen-laden aerosol aerodynamics and ventilation rates on their long-range transmission: A study on the Fangcang shelter hospital

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 450, P. 141796 - 141796

Published: March 17, 2024

Language: Английский

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Air quality and ventilation: exploring solutions for healthy and sustainable urban environments in times of climate change

Results in Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 103157 - 103157

Published: Oct. 1, 2024

Language: Английский

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Building occupancy estimation using microwave Doppler radar and wavelet transform

Building and Environment, Journal Year: 2023, Volume and Issue: 236, P. 110233 - 110233

Published: March 28, 2023

Room-level occupancy estimation is a critical input for real estate management, including building utilization optimization, energy-efficient control, security, and occupant health well-being. Knowing how many people are using room at time can enable businesses to use their estate, energy human capital more efficiently, reducing operating expenses as well carbon footprint. Radar-based attractive because it unobtrusive does not introduce the privacy issues brought with video imaging-based sensors. In this paper, we present an approach based on continuous wave Doppler radar wavelet-based signal processing techniques. Theoretical background provides rational time-frequency approach, comprehensive simulation experimental results demonstrate effectiveness of proposed approaches data set that includes 1–10 occupants. These indicate may be effective tool count in smart applications.

Language: Английский

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The Relationship between Mechanical Ventilation, Indoor Air Quality Classes, and Energy Classes in a Romanian Context

Atmosphere, Journal Year: 2024, Volume and Issue: 15(4), P. 444 - 444

Published: April 3, 2024

Nowadays, indoor air quality (IAQ) and the energy performance of buildings are two main scientific technical challenges because they in direct connection with human health depletion resources. In this study, we analyzed influence an outdoor flow introduced through a mechanical ventilation system, focusing on aforementioned topics. A standardized rate (25 m3/h/person) led to increase O3 concentration (from 5 μg/m3 50 μg/m3) and, simultaneously, decrease CO2 2000 mg/m3 800 mg/m3), PM2.5 300 150 μg/m3), maintenance constant HCHO concentration. our new, single index, IIAQ, is proposed. This new index presents different implications: one hand, it has ability simultaneously take into account several pollutant species, other can prioritize strategy that responds extreme values certain pollutant. Moreover, classes were elaborated, similar classes. The possibility using consumption may lead strategies adaptative dynamic concentrations.

Language: Английский

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Digital twin-enhanced predictive maintenance for indoor climate: A parallel LSTM-autoencoder failure prediction approach

Energy and Buildings, Journal Year: 2023, Volume and Issue: 301, P. 113738 - 113738

Published: Nov. 10, 2023

Language: Английский

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