Personalized ventilation with embedded air treatment system for simultaneous cooling and sorption-based carbon and humidity capture

Harrouz, Jean Paul; Karam, Jennifer; Ghali, Kamel; Ghaddar, Nesreen

doi:10.1016/j.enconman.2023.117290

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…The MV air distribution system consists of a ceiling-mounted square supply diffuser (600 mm × 600 mm) and an outlet grille (600 mm × 600 mm). The MV system supplies a mixture of fresh outdoor air and recirculated air with a CO 2 concentration of 540 ppm capable of maintaining a relaxed background CO 2 level of 1100 ppm inside the space [28]. The office is considered densely occupied, with four occupants sitting around a table at close proximity with a separation distance of 0.8 m between them, as shown in Figure 1.…”

Section: System Descriptionmentioning

confidence: 99%

Resilience of Personalized Ventilation in Maintaining Acceptable Breathable Air Quality When Combined with Mixing Ventilation Subject to External Shocks

Karam,

Ghali,

Ghaddar

2024

Buildings

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This work evaluates the ventilation resilience of the combined personalized ventilation (PV)-mixing ventilation (MV) system when implemented in a typical office space. This resilience is first evaluated by monitoring the ability of the PV devices when designed at different supply flow rates to maintain acceptable levels of CO2 at the occupant’s breathing zone when the MV system is subjected to a shock. The shock considers a malfunction of the MV system for periods of 3 h and 6 h, and at shutoff percentages of MV fan flow of 100% and 50%. This is followed by evaluating the resilience of the MV system when the PV air handling unit is shutoff for short periods. The following three aspects of resilience were calculated: the absorptivity, the recovery, and the resilience effectiveness. To monitor the CO2 temporal variation at the breathing zone, a computational fluid dynamic model was developed and validated experimentally. It was found that the resilience effectiveness varied between 0.61 (100% MV shutoff for 6 h and PV at 4 L/s) and 1 (50% MV shutoff for 3 h and PV at 13 L/s). Additionally, CO2 build-up and recovery took minutes during MV malfunctions and seconds during PV malfunctions.

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Section: System Descriptionmentioning

confidence: 99%

Resilience of Personalized Ventilation in Maintaining Acceptable Breathable Air Quality When Combined with Mixing Ventilation Subject to External Shocks

Karam,

Ghali,

Ghaddar

2024

Buildings

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“…The other group of papers on thermal comfort deals with methods of assessing thermal comfort [114][115][116][117] or on the subject of the personalization of comfort through ventilation [118,119]. Due to the assumed criteria for the selection of publications for the review and the extensiveness of the subject, the above issues have not been included.…”

Section: The Future Directions Of Researchmentioning

confidence: 99%

Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

Ratajczak,

Amanowicz,

Pałaszyńska

et al. 2023

Energies

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Ventilation systems are mainly responsible for maintaining the quality of indoor air. Together with thermal comfort maintenance systems, they create appropriate conditions for living, working, learning, sleeping, etc., depending on the type of building. This explains the high popularity of research in this area. This paper presents a review of articles published in the years 2020–2023, which are indexed in the Scopus database and found with keywords “ventilation” and “thermal comfort” in conjunction with the type of building or predominant activity. Finally, 88 selected works for five types of buildings were discussed, namely offices, schools, hospitals, bedrooms, and atriums. Data on publications are summarized in the tables, taking into account the publishing year, country of origin of the authors, and keywords. In this way, the latest directions in research were presented, and research groups dealing with this subject were highlighted. For each type of building, synthetic conclusions were presented, summarizing the results of the analyzed research. This review paper would be helpful for scientists and practitioners in the field of ventilation in order to organize knowledge and in a short time be up to date with the latest research showing how ventilation affects the quality of use of buildings by their users.

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Bionic penguin feather wearable textile with coupled insulation for thermal management application

Ran,

Chen,

Wang

et al. 2024

Cellulose

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Personalized ventilation with embedded air treatment system for simultaneous cooling and sorption-based carbon and humidity capture

Cited by 8 publications

References 49 publications

Resilience of Personalized Ventilation in Maintaining Acceptable Breathable Air Quality When Combined with Mixing Ventilation Subject to External Shocks

Resilience of Personalized Ventilation in Maintaining Acceptable Breathable Air Quality When Combined with Mixing Ventilation Subject to External Shocks

Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review

Bionic penguin feather wearable textile with coupled insulation for thermal management application

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