TY - JOUR
T1 - Determining effects of spacer orientations on channel hydraulic conditions using PIV
AU - Haidari, A. H.
AU - Heijman, S. G.J.
AU - Uijttewaal, W. S.J.
AU - van der Meer, W. G.J.
N1 - Elsevier deal
PY - 2019/10
Y1 - 2019/10
N2 - Feed spacer orientation affects the velocity pattern and pressure drop of spacer-filled channels such as those encountered in Spiral-wound Membrane (SWM) modules of Reverse Osmosis (RO). However, there are only limited numbers of experimental studies on this topic. This study sets out to reveal more detailed information on the pressure drop and velocity patterns of spacer-filled channels. Particle Image Velocimetry (PIV) is used to provide high-resolution velocity maps for three commercial feed spacers of different thicknesses at a flow attack angle of 45° and 90°. The pressure drop is measured for the applied operational conditions (Re < 250). Results showed higher pressure losses, a better mixing of flow, a lower variation of temporal velocity, and a smaller variation of velocity over the channel height in the orientation with a flow attack angle of 45° as compared to 90°. The results presented here can be used to validate numerical studies, determine the fouling-sensitive regions in a spacer-filled channel and consequently, design the optimal spacer with respect to its orientation and thickness.
AB - Feed spacer orientation affects the velocity pattern and pressure drop of spacer-filled channels such as those encountered in Spiral-wound Membrane (SWM) modules of Reverse Osmosis (RO). However, there are only limited numbers of experimental studies on this topic. This study sets out to reveal more detailed information on the pressure drop and velocity patterns of spacer-filled channels. Particle Image Velocimetry (PIV) is used to provide high-resolution velocity maps for three commercial feed spacers of different thicknesses at a flow attack angle of 45° and 90°. The pressure drop is measured for the applied operational conditions (Re < 250). Results showed higher pressure losses, a better mixing of flow, a lower variation of temporal velocity, and a smaller variation of velocity over the channel height in the orientation with a flow attack angle of 45° as compared to 90°. The results presented here can be used to validate numerical studies, determine the fouling-sensitive regions in a spacer-filled channel and consequently, design the optimal spacer with respect to its orientation and thickness.
KW - UT-Hybrid-D
KW - Membrane
KW - Particle image velocimetry
KW - PIV
KW - Reverse osmosis
KW - Spiral wound modules
KW - Feed spacer
UR - http://www.scopus.com/inward/record.url?scp=85063971752&partnerID=8YFLogxK
U2 - 10.1016/j.jwpe.2019.100820
DO - 10.1016/j.jwpe.2019.100820
M3 - Article
AN - SCOPUS:85063971752
SN - 2214-7144
VL - 31
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 100820
ER -