TY - GEN
T1 - Low Energy Desalination via DCMD
T2 - 5th International Renewable and Sustainable Energy Conference, IRSEC 2017
AU - Kadi, Khadije El
AU - Janajreh, Isam
AU - Hashaikeh, Raed
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/9/28
Y1 - 2018/9/28
N2 - The role of superhydrophobicity on DCMD performance is assessed using polyvinylidenefluoride-co-hexafluoropropylene (PVDF-HFP) electrospun membrane sheet coated with tetrafluoroethylene oligomers (OTFE) particles followed with hot pressing. This led to infuse and deposit 2-3 μm of OTFE layer on the surface of the PVDF-HFP membrane without compromising the pore size distribution nor the membrane permeability. Nominally the membrane is tested and reported to achieve 99.9% salt rejection and 14kg/m2.hr permeation flux. A mid this successful fabrication and assessment, high fidelity computational model that based on conjugated Navier-Stokes flow for the flat membrane DCMD system is developed to assess the sensitivity of the hydrophobicity under different flow conditions (i.e. temperature, velocity or Reynolds number), and membrane properties (i.e. porosity and conductivity). Results shows the pronounced and outstanding performance of the superhydrophobic DCMD membrane when integrate with low conductivity, high porosity and subjected to favorable high and safe operating temperature and Re flow. Under these conditions, an additional improvement of 20%, 22%, 15% can be achieved in the permeation flux, thermal efficiency and temperature polarization coefficient (TPC) metrics, respectively.
AB - The role of superhydrophobicity on DCMD performance is assessed using polyvinylidenefluoride-co-hexafluoropropylene (PVDF-HFP) electrospun membrane sheet coated with tetrafluoroethylene oligomers (OTFE) particles followed with hot pressing. This led to infuse and deposit 2-3 μm of OTFE layer on the surface of the PVDF-HFP membrane without compromising the pore size distribution nor the membrane permeability. Nominally the membrane is tested and reported to achieve 99.9% salt rejection and 14kg/m2.hr permeation flux. A mid this successful fabrication and assessment, high fidelity computational model that based on conjugated Navier-Stokes flow for the flat membrane DCMD system is developed to assess the sensitivity of the hydrophobicity under different flow conditions (i.e. temperature, velocity or Reynolds number), and membrane properties (i.e. porosity and conductivity). Results shows the pronounced and outstanding performance of the superhydrophobic DCMD membrane when integrate with low conductivity, high porosity and subjected to favorable high and safe operating temperature and Re flow. Under these conditions, an additional improvement of 20%, 22%, 15% can be achieved in the permeation flux, thermal efficiency and temperature polarization coefficient (TPC) metrics, respectively.
KW - CFD
KW - PVDF membrane
KW - membrane distillation
KW - membrane performance
KW - permeation flux
KW - superhydrophobic membrane
UR - http://www.scopus.com/inward/record.url?scp=85055871977&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055871977&partnerID=8YFLogxK
U2 - 10.1109/IRSEC.2017.8477351
DO - 10.1109/IRSEC.2017.8477351
M3 - Conference contribution
AN - SCOPUS:85055871977
T3 - Proceedings of 2017 International Renewable and Sustainable Energy Conference, IRSEC 2017
BT - Proceedings of 2017 International Renewable and Sustainable Energy Conference, IRSEC 2017
A2 - Zaz, Youssef
A2 - Essaaidi, Mohamed
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 4 December 2017 through 7 December 2017
ER -