Effects of Internal Partitions on Flow Field and Air Contaminant Distribution under Different Ventilation Modes

Xiaoping Liu, Xiaojiao Wu, Linjing Chen and Rui Zhou
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Xiaoping Liu: School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
Xiaojiao Wu: School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
Linjing Chen: School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
Rui Zhou: Department of Engineering Physics, Institute for Public Safety Research, Beijing Key Laboratory of City Integrated Emergency Response Science, Tsinghua University, Beijing 100084, China

IJERPH, 2018, vol. 15, issue 11, 1-15

Abstract: Based on frequently used internal partitions in offices, the effects of pollutant source characteristics and an internal partition on airflow and contaminant distribution under different ventilation modes are studied in this paper. The indoor flow field measurement is implemented in a 1:1 single environmental chamber under different ventilation patterns, and then the numerical model is established. The numerical method is verified and analyzed by comparing the measured and simulated results. According to the verification results, the numerical simulation is introduced to study the influence of different supply and return air mixes and pollutant source distributions on the flow field and diffusion performance with an internal partition. The indoor flow field and concentration distribution under different conditions are compared, and the discharge efficiency under different working conditions is analyzed. The results indicate that internal partitions have a greater influence on the down-supply up-return ventilation mode than the floor-supply up-return and top-supply down-return ventilation mode. Furthermore, if the room is zoned, the effect of source position is larger under the down-supply up-return ventilation mode than under the other two modes.

Keywords: contaminant; airflow distribution; numerical simulation; concentration field (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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