TY - GEN
T1 - Design of Multi Nozzles for a Portable Air Flow Meter using Numerical Simulation
AU - Oh, Sang Taek
AU - Park, Jong Jun
AU - Kim, Young II
AU - Kim, Sean Hay
N1 - Publisher Copyright:
© U.S. Government
PY - 2019
Y1 - 2019
N2 - Portable air flow meters are widely used for measuring air flow rates in the field. To cover broad range of flow rates, multi nobles are generally used. If ASHRAE standard for installing nozzles is applied, the device gets large and heavy, and becomes difficult for compact siting and handting. In order to overcome this problem, computational fluid dynamic(CFD) simulations were performed to identify the factors that can make the site of the airflow mete smaller. With help of numerical simulation of which the accuracy was verified by the experiment, the necessary area for multi nozzle installation can be reduced by 47%. Based on the modeling of CED, a portable air flow meter was manufactured and compared with an air flow measurement device that is compliant with ANSI/ASHRAE 51-1999. Nobles and dampers which effect the length and cross-sectional site of an air flow meter were selected and improved to suit the portable type. A portable small scale multi nozzle flow meter with exit pressure control that was developed in this study has advantages of small site and acceptable accuracy in the field measurement which showed an error of 0.93%.
AB - Portable air flow meters are widely used for measuring air flow rates in the field. To cover broad range of flow rates, multi nobles are generally used. If ASHRAE standard for installing nozzles is applied, the device gets large and heavy, and becomes difficult for compact siting and handting. In order to overcome this problem, computational fluid dynamic(CFD) simulations were performed to identify the factors that can make the site of the airflow mete smaller. With help of numerical simulation of which the accuracy was verified by the experiment, the necessary area for multi nozzle installation can be reduced by 47%. Based on the modeling of CED, a portable air flow meter was manufactured and compared with an air flow measurement device that is compliant with ANSI/ASHRAE 51-1999. Nobles and dampers which effect the length and cross-sectional site of an air flow meter were selected and improved to suit the portable type. A portable small scale multi nozzle flow meter with exit pressure control that was developed in this study has advantages of small site and acceptable accuracy in the field measurement which showed an error of 0.93%.
UR - https://www.scopus.com/pages/publications/85071946606
M3 - Conference contribution
AN - SCOPUS:85071946606
T3 - ASHRAE Transactions
SP - 298
EP - 306
BT - ASHRAE Transactions - 2019 ASHRAE Winter Conference
PB - ASHRAE
T2 - 2019 ASHRAE Winter Conference
Y2 - 12 January 2019 through 16 January 2019
ER -