Print Email Facebook Twitter Membrane distillation against a pressure difference Title Membrane distillation against a pressure difference Author Keulen, L. van der Ham, LV (TNO) Kuipers, N.J.M. (TNO) Hanemaaijer, J.H. (TNO) Vlugt, T.J.H. (TU Delft Engineering Thermodynamics) Kjelstrup, S (Norwegian University of Science and Technology (NTNU)) Date 2017 Abstract Membrane distillation is an attractive technology for production of fresh water from seawater. The MemPower®MemPower® concept, studied in this work, uses available heat (86 °C) to produce pressurized water (2.2 bar and 46 °C) by membrane distillation, which again can be used to power a turbine for co-production of electricity. We develop a non-equilibrium thermodynamic model to accurately describe the transfer at the liquid-membrane interfaces, as well as through the hydrophobic membrane. The model can explain the observed mass flux, and shows that 85% of the energy is dissipated at the membrane-permeate interface. It appears that the system's performance will benefit from a lower interface resistance to heat transfer, in particular at the permeate side of the membrane. The nature of the membrane polymer and the pore diameter may play a role in this context. Subject Membrane distillationWater desalinationHeat and mass transferMemPowerIrreversible thermodynamics To reference this document use: http://resolver.tudelft.nl/uuid:4d7751d0-d2d0-4ce6-84b5-84a13095a2a2 DOI https://doi.org/10.1016/j.memsci.2016.10.054 ISSN 0376-7388 Source Journal of Membrane Science, 524, 151-162 Part of collection Institutional Repository Document type journal article Rights © 2017 L. Keulen, LV van der Ham, N.J.M. Kuipers, J.H. Hanemaaijer, T.J.H. Vlugt, S Kjelstrup Files PDF 1_s2.0_S0376738816308997.pdf 946.67 KB Close viewer /islandora/object/uuid:4d7751d0-d2d0-4ce6-84b5-84a13095a2a2/datastream/OBJ/view