Research of the microclimate formed by the local DCV

Naumov, Alexander L.; Tabunshchikov, Y.A.; Kapko, Dmitry V.; Brodach, M.M.

doi:10.1016/j.enbuild.2015.01.006

Cited by 12 publications

(7 citation statements)

References 9 publications

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“…The direct energy-saving evaluation index mainly accounts for the reduction of cooling loads in the occupied zone using PV devices [96,109,207], or a difference in power consumption of a PV or MV air supply fan due to different flow rates [113]. A cooling load calculation method originally designed for stratified air distribution systems was used [208] by ventilating only the occupied zone and then calculating the cooling energy saving in the coil capacity of DV compared to MV [123].…”

Section: Energy Savingsmentioning

confidence: 99%

“…The coil capacity can be assessed by multiplying the exhaust mass flow rate and the difference between the exhaust temperature and indoor setpoint temperature [111,112]. Similarly, the cooling capacity can be calculated by taking into account the supply flow rate and temperature difference between outside air and supplied air [96,207]. As for PV assisting with a chilled ceiling, the radiant heat load removal and convective heat load removal should both be considered [119].…”

Section: Energy Savingsmentioning

confidence: 99%

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A Review of CFD Analysis Methods for Personalized Ventilation (PV) in Indoor Built Environments

et al. 2019

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Computational fluid dynamics (CFD) is an effective analysis method of personalized ventilation (PV) in indoor built environments. As an increasingly important supplement to experimental and theoretical methods, the quality of CFD simulations must be maintained through an adequately controlled numerical modeling process. CFD numerical data can explain PV performance in terms of inhaled air quality, occupants’ thermal comfort, and building energy savings. Therefore, this paper presents state-of-the-art CFD analyses of PV systems in indoor built environments. The results emphasize the importance of accurate thermal boundary conditions for computational thermal manikins (CTMs) to properly analyze the heat exchange between human body and the microenvironment, including both convective and radiative heat exchange. CFD modeling performance is examined in terms of effectiveness of computational grids, convergence criteria, and validation methods. Additionally, indices of PV performance are suggested as system-performance evaluation criteria. A specific utilization of realistic PV air supply diffuser configurations remains a challenging task for further study. Overall, the adaptable airflow characteristics of a PV air supply provide an opportunity to achieve better thermal comfort with lower energy use based on CFD numerical analyses.

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Section: Energy Savingsmentioning

confidence: 99%

Section: Energy Savingsmentioning

confidence: 99%

A Review of CFD Analysis Methods for Personalized Ventilation (PV) in Indoor Built Environments

et al. 2019

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“…Although CO2 concentration may easily be considered a factor contributing to air purity (Naumov et al 2015;Fabbri, Boeri 2014), without proper measuring equipment no one is able to define this type of air pollution.…”

Section: Room Microclimatementioning

confidence: 99%

Analysis of Carbon Dioxide in Kindergartens in Poland

Jachimowicz

Gładyszewska-Fiedoruk

2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. Children in kindergartens spend between five and ten hours a day, the quality of air inside is very important. Kindergartens are public buildings. Kindergartens in Poland do not have mechanical ventilation, most often use stack ventilation, which is frequently aided by airing. The three considered buildings were located in eastern Europe. The main objective of the research was to evaluate the interior conditions, especially with regard to carbon dioxide concentration. In the afternoon, the permissible level of carbon dioxide concentration was substantially exceeded (by 190% at the most in first series of measurement). The present research has resulted in considerable improvement of indoor conditions in the analyzed kindergartens (less than 140% in third series of measurement). The presence of children and ventilation habits seemed to be the main determinants of IAQ and carbon dioxide.

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“…Sometimes, the survey is the only reconnaissance tool [8,26]. In the thermal comfort analysis, surveys are often used in research [7,19,27].…”

Section: Surveysmentioning

confidence: 99%

Analysis of thermal comfort in education building in surveys

Witkowska

Gładyszewska-Fiedoruk

2018

E3S Web Conf.

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Abstract. Main parameters of indoor air quality could influence people health and ability to work and ability to learning. The research was conducted in University of Technology building located in Białystok, north-eastern Poland. Research -surveys was devoted to issues related to the thermal comfort in a classroom of university. Interviewees declared perceptible temperature and described their feelings connected to the temperature sensation. Other indoor parameters were also analysed such as: temperature, humidity and indoor air quality and noise level. Peoples -students filled the surveys about thermal comfort and indoor parameters. The research included indoor thermal comfort.

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Research of the microclimate formed by the local DCV

Cited by 12 publications

References 9 publications

A Review of CFD Analysis Methods for Personalized Ventilation (PV) in Indoor Built Environments

A Review of CFD Analysis Methods for Personalized Ventilation (PV) in Indoor Built Environments

Analysis of Carbon Dioxide in Kindergartens in Poland

Analysis of thermal comfort in education building in surveys

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