Performance evaluation of an architecturally-designed vertical high capacity linear slot diffuser in a tropical atrium
Document Type
Article
Publication Date
1-2-2023
Abstract
This paper proposed a new approach for the efficient air conditioning of large tropical buildings. The current study has two objectives: the design and numerical investigations of the performance of vertically oriented high capacity linear slot diffusers (HCLSD) in an atrium building and the verification and validation of the different turbulence models through laboratory-scale experiments. The HCLSD was investigated with varying angles of inclination of the blades (phi = 0(o) to 25(o)) for the in-depth performance analyses. The performance was evaluated by monitoring and comparing the velocity and temperature profiles along the vertical lines drawn at different locations in the studied domain. A relatively longer jet throw was noticed through quantitative analysis at phi = 0(o). Note that more than 33% increment in the face velocity was recorded at this angle. The corresponding terminal velocity of 0.225 m/s was observed at 8 m distance from the diffuser face. The detailed investigations at 0(o) deflector angle (case-1) were carried out for velocity, temperature field, and thermal comfort indices, i.e. PMV and PPD models. For the occupied zone, the thermal comfort indices were found within the acceptable ranges (i.e. PMV = + 0.1 to +0.9 and PPD = 4% to 20%).
Keywords
CFD simulation, Tropical atrium, Slot diffuser, Turbulence model, Deflector angle
Divisions
mechanical
Funders
Universiti Malaya (Grant No: RK005-2020),IIRG Grant (Grant No: IIRG014-2019A),Pakistan Government
Publication Title
Architectural Science Review
Volume
66
Issue
1
Publisher
Taylor & Francis Ltd
Publisher Location
2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND