Effect of Arrangement and Number of Water Mist Spray Nozzles on Air Humidity

Balthazar, Pravinth; Ismail, Mohd Nazari; Wahab, Andyqa Abdul; Nasir, M.; Ramdan, Muhammad Iftishah; Mamat, Hussin

doi:10.1007/978-981-15-1616-0_12

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Some method was used to control air relative humidity. Thus, Pravinth et al, [4,5] and Khalid et al, [6] study to control and amend air relative humidity with water nozzle arrangements and desiccant materials.…”

Section: Introductionmentioning

confidence: 99%

CFD HVAC Study of Modular Badminton Hall

Ismail¹,

Jamil²

2020

CFDL

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Modular badminton hall is proposed to Badminton Association Malaysia in 2017. This hall has several advantages including; easy to transport and relocate, and fast installation and dismantling. The air ventilation is one of the important aspects in designing the modular badminton hall. The low room temperature and the air velocity are important characteristics, and they must to take into account during design and calculation. Therefore, the present work employed CFD ANSYS Fluent to study the effect of exhaust fan numbers and exhaust fan arrangements on the room temperature and the air velocity. The heat source are contributed by humans, and the solar radiation effect are included in the computational. Five designs with various number of exhaust fans and arrangements are studied. According to the result, Design 5 produces the lowest average room temperature, 26.52°C. Although the average air velocity of Design 5 is the highest; around 0.083m/s, it still acceptable as it has the maximum air velocity spot lower than 0.1m/s. In the present work, Design 5 shows the best performances and the best air ventilation design for the Modular Badminton Hall in Malaysia.

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Section: Introductionmentioning

confidence: 99%

CFD HVAC Study of Modular Badminton Hall

Ismail¹,

Jamil²

2020

CFDL

Self Cite

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Dimensionless Characteristic Analysis of Indoor Gas–Liquid Humidification Jet Under Low Air Pressure on the Qinghai‐Xizang Plateau

Hu,

Wang,

Wang

et al. 2024

Indoor Air

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Mastering the characteristics of gas–liquid humidification jets at low pressure is fundamental for creating indoor humidity environments on the Qinghai‐Xizang Plateau. In this paper, we numerically simulate gas–liquid two‐phase jets at 50.0–101.3 kPa and analyze their flow, mass transfer, and heat transfer properties based on relevant dimensionless numbers. The results show that, for Reynolds number (Re) = 1652–9914 at low pressure, the jet axis velocity decays more slowly, the entrainment between the jet boundary and ambient air is enhanced, and the momentum diffusion range is larger. Specifically, at Re = 1652, the average jet axis velocity of 50.0 kPa is 0.13 m/s higher than that of 101.3 kPa. The jet dimensionless velocity distribution of each radial section obeys the Voigt curve. Under low‐pressure conditions, the humidity diffusion range of the jet expands, while the temperature diffusion range decreases. The jet flow trajectory and velocity distribution are highly dependent on Re and Froude number (Fr), and temperature distribution depends significantly on Prandtl number (Pr) and Re. The jet humidity distribution highly depends on Schmidt number (Sc) when Re = 1652 and Re = 4957–9914, while showing weaker dependence on Sc for Re = 1652–4957. This study is aimed at enhancing the theory of gas–liquid jet flow and providing theoretical guidance for developing indoor humidity environment construction techniques at low pressure, thereby improving the livability of plateau buildings.

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Effect of Arrangement and Number of Water Mist Spray Nozzles on Air Humidity

Cited by 2 publications

References 16 publications

CFD HVAC Study of Modular Badminton Hall

CFD HVAC Study of Modular Badminton Hall

Dimensionless Characteristic Analysis of Indoor Gas–Liquid Humidification Jet Under Low Air Pressure on the Qinghai‐Xizang Plateau

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