Nguyen Anh Tuan and K. David Huang
Abstract—In a highly developed living, people are always
looking for a comfortable indoor environment with minimum
energy use. Regional air conditioning mechanism (RACM) can
create a personal thermal comfort control in a workroom which
can contribute to save air-conditioning energy. In this study, we
analyze the airflow circulation cell of the RACM with varied
inlet port opening and inlet port position dimensions using the
computational fluid dynamics (CFD) technique. We created a
RACM, two workstations, lightings, and a cabinet in a
3-dimensional room. The fluid was assumed to be Newtonian,
unsteady, and incompressible. A Bossinesq approximation was
determined in order to consider the buoyancy effect. We
examined the effects of the inlet port opening and inlet port
position on airflow circulation establishing process. Air
temperatures along the various midline of the occupied zone
were predicted and compared for a range of inlet port opening
and inlet port position by using non-dimensional form. We also
showed the occupied zone temperature at various planes in the
workroom. Results will indicate the suitable inlet port opening
and inlet port position for maintaining individual satisfied
occupants’ requirements and improving energy saving
potential.
Index Terms—Environmental thermal comfort, personal
air-conditioning, computational fluid dynamics (CFD),
energy-saving.
Nguyen Anh Tuan is with the Department of International Cooperation,
Ministry of Science and Technology, Hanoi 10000, Vietnam, (email:
tuana102000@yahoo.com or anhtuan@most.gov.vn).
K. David Huang is with Institute of Mechanical and Electrical
Engineering, National Taipei University of Technology, Taipei 10608,
Taiwan, R.O.C (email: kdavidh@ntut.edu.tw).
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Cite:Nguyen Anh Tuan and K. David Huang, "Study of a Micro Thermal Environment of a Personal Air-Conditioning," International Journal of Environmental Science and Development vol. 5, no. 2, pp. 137-141, 2014.
