Biologically inspired porous cooling membrane using arrayed-droplets evaporation

Kokalj, T.; Cho, H.; Jenko, M.; Lee, L. P.
April 2010
Applied Physics Letters;4/19/2010, Vol. 96 Issue 16, p163703
Academic Journal
Inspired by human skin that dissipates heat via sweat-droplet evaporation on the skin, we propose an evaporative cooling technique via arrayed-droplets on a porous membrane, construct an analytical model of the evaporative cooling including interactions among the large number of droplets, and extensively analyze the cooling performance of 1000-droplet array. Our model shows that heat dissipation is enhanced by the membrane with dense droplets (i.e., enhancement factor of 10 at 5000 pores/cm2 and pore radius of 35 μm with respect to human skin). Additionally, the model predicts that the membrane dissipates heat more efficiently by operating at a higher temperature (i.e., additional enhancement factor of 17 at droplet temperature of 100 °C).


Related Articles

  • Coherent structures, intermittent turbulence, and dissipation in high-temperature plasmas. Karimabadi, H.; Roytershteyn, V.; Wan, M.; Matthaeus, W. H.; Daughton, W.; Wu, P.; Shay, M.; Loring, B.; Borovsky, J.; Leonardis, E.; Chapman, S. C.; Nakamura, T. K. M. // Physics of Plasmas;Jan2013, Vol. 20 Issue 1, p012303 

    An unsolved problem in plasma turbulence is how energy is dissipated at small scales. Particle collisions are too infrequent in hot plasmas to provide the necessary dissipation. Simulations either treat the fluid scales and impose an ad hoc form of dissipation (e.g., resistivity) or consider...

  • Superthermal electron production from hot underdense plasmas. Aithal, Shridhar; Lavigne, Pierre; P�pin, Henri; Johnston, Tudor Wyatt; Estabrook, Kent // Physics of Fluids (00319171);Dec87, Vol. 30 Issue 12, p3825 

    Very-high-energy electrons of up to an energy of ~2.3 MeV have been observed to be emitted from the hot underdense exploding thin foil plasmas created by 10.6 �m CO2 laser radiation at intensity levels up to ~4�1014 W/cm2. As a supplement to the electron measurements the forward and...

  • Analysis of Time Evolution of Z-pinch Lines Using an Advanced 5-channel Spectrometer Polychromator. Fedin, D. A.; Kantsyrev, V. L.; Shlyaptseva, A. S.; Hansen, S. B.; Fuelling, S. // AIP Conference Proceedings;2002, Vol. 651 Issue 1, p189 

    The measurements with temporal resolution are very important in studies of properties of radiation from hot dense plasmas (0.8

  • Conceptual design and numerical simulation of a correlation diagnostic for measurement of magnetic fluctuations in plasmas. Thomas, C. E.; Hanson, G. R.; Gandy, R. F.; Batchelor, D. B.; Goldfinger, R. C. // Review of Scientific Instruments;Sep88, Vol. 59 Issue 9, p1990 

    It has been previously suggested that crossed-sightline correlation of electron cylotron emission might be used to measure magnetic fluctuations in high-temperature plasmas. Reported here are the results of a continuing project to determine under what conditions (if any) this measurement will be...

  • Saturation of stimulated Raman backscatter in strongly turbulent plasmas. Mourenas, D. // Physics of Plasmas;Apr99, Vol. 6 Issue 4, p1258 

    Examines the nonlinear behavior of stimulated Raman backscattering in a homogeneous and hot plasma slab. Evidence showing that Langmuir waves may be reduced to the collisional one; Incoherent interaction for moderate to strong laser pump power.

  • Runaway electrons as a diagnostic of magnetic fluctuations (abstract). Bengtson, Roger D.; Wang, P. W.; Freeman, M.; Wootton, A. J.; Catto, Peter J.; Myra, J. R. // Review of Scientific Instruments;Oct92, Vol. 63 Issue 10, p4617 

    The transport of runaway electrons in a hot plasma can be comparatively easily measured by perturbation experiments. The runaway electron diffusion coefficient is determined by intrinsic magnetic fluctuations rather than electrostatic fluctuations because of the high energies involved. The...

  • Recent developments in atomic physics for the simulation of hot plasmas. Klapisch, M.; Bar-Shalom, A.; Oreg, J.; Colombant, D. // Physics of Plasmas;May2001, Vol. 8 Issue 5, p1817 

    Simulations of plasmas in which atoms are not completely stripped require atomic data, like average charge, ionization energies, and radiative properties (emissivity, opacity). These depend on populations of energy levels. The basic framework for obtaining the latter is the collisional radiative...

  • Generation of warm dense matter and strongly coupled plasmas using the High Radiation on Materials facility at the CERN Super Proton Synchrotron. Tahir, Naeem A.; Schmidt, Ruediger; Brugger, Markus; Assmann, Ralph; Shutov, Alexander; Lomonosov, Igor V.; Gryaznov, Viktor; Piriz, Antonio Roberto; Udrea, Serban; Hoffmann, Dieter H. H.; Fortov, Vladimir E.; Deutsch, Claude // Physics of Plasmas;Aug2009, Vol. 16 Issue 8, p082703 

    A dedicated facility named High Radiation on Materials (HiRadMat) is being constructed at CERN to study the interaction of the 450 GeV protons generated by the Super Proton Synchrotron (SPS) with fixed solid targets of different materials. The main purpose of these future experiments is to study...

  • Subgrid-scale modeling of compressible magnetohydrodynamic turbulence in heat-conducting plasma. Chernyshov, A. A.; Karelsky, K. V.; Petrosyan, A. S. // Physics of Plasmas;Oct2006, Vol. 13 Issue 10, p104501 

    A large-eddy simulation (LES) approach for compressible magnetohydrodynamic (MHD) turbulence in heat-conducting plasma is developed for the first time. Subgrid-scale models for new terms appearing due to the presence of magnetic field are suggested. Results of modeling for decaying compressible...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics