During recent years an increasing amount of attention has been paid to air distribution systems with which officer can individually condition the immediate environment of their workstations. Fanger suggested supplying ventilation air that is unmixed with room air, directly to the breathing zone of each occupant. Task conditioning aims to provide each occupant with personalized clean air direct to the breathing zone. Each occupant can control the environment at his/her workplace. Microenvironment of a typical office workplace consisting of movable panel (MP) task conditioning systems was studied by numerical simulation. MP task conditioning systems were operated while a conventional HVAC system supplied air through a diffuser located in the ceiling. Air was exhausted through a ducted ceiling-level grill. Numerical simulation of 3-D turbulent flow (k-ε closure) was separately conducted to study the influence of supply velocity, air blowing distance and size of MP supply outlet on microenvironment. Three task conditioning velocities, 0.6, 0.8 and 1.0m/s, three sizes 0.3×0.15, 0.3×0.1 and 0.25×0.08m and two air blowing distances were studied. In addition to analyzing temperature and velocity distribution, Draught Rating (DR) and Predicted Percentage of Dissatisfied (PPD) of the room and workstation were studied.
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ASME 2007 Energy Sustainability Conference
July 27–30, 2007
Long Beach, California, USA
Conference Sponsors:
- Solar Energy Division and Advanced Energy Systems Division
ISBN:
0-7918-4797-7
PROCEEDINGS PAPER
Airflow Distribution and Microenvironment Evaluation of MP Task Conditioning System Available to Purchase
Guozhong Zheng,
Guozhong Zheng
North China Electric Power University, Baoding, Hebei, P. R. China
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Youyin Jing,
Youyin Jing
North China Electric Power University, Baoding, Hebei, P. R. China
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Hongxia Huang,
Hongxia Huang
North China Electric Power University, Baoding, Hebei, P. R. China
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Lijun Shi
Lijun Shi
Beijing Urban Construction Installation Engineering Company, Ltd., Beijing, P. R. China
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Guozhong Zheng
North China Electric Power University, Baoding, Hebei, P. R. China
Youyin Jing
North China Electric Power University, Baoding, Hebei, P. R. China
Hongxia Huang
North China Electric Power University, Baoding, Hebei, P. R. China
Lijun Shi
Beijing Urban Construction Installation Engineering Company, Ltd., Beijing, P. R. China
Paper No:
ES2007-36248, pp. 797-806; 10 pages
Published Online:
February 24, 2009
Citation
Zheng, G, Jing, Y, Huang, H, & Shi, L. "Airflow Distribution and Microenvironment Evaluation of MP Task Conditioning System." Proceedings of the ASME 2007 Energy Sustainability Conference. ASME 2007 Energy Sustainability Conference. Long Beach, California, USA. July 27–30, 2007. pp. 797-806. ASME. https://doi.org/10.1115/ES2007-36248
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