Peter W. Egolf - UNIVERSITY OF APPLIED SCIENCES OF WESTERN SWITZERLAND - A BRIEF STATE OF THE AR OF ICE SLURRIES AND ITS TECHNOLOGY
Upcoming SlideShare
Loading in...5
×
 

Peter W. Egolf - UNIVERSITY OF APPLIED SCIENCES OF WESTERN SWITZERLAND - A BRIEF STATE OF THE AR OF ICE SLURRIES AND ITS TECHNOLOGY

on

  • 759 views

 

Statistics

Views

Total Views
759
Views on SlideShare
759
Embed Views
0

Actions

Likes
0
Downloads
2
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Peter W. Egolf - UNIVERSITY OF APPLIED SCIENCES OF WESTERN SWITZERLAND - A BRIEF STATE OF THE AR OF ICE SLURRIES AND ITS TECHNOLOGY Peter W. Egolf - UNIVERSITY OF APPLIED SCIENCES OF WESTERN SWITZERLAND - A BRIEF STATE OF THE AR OF ICE SLURRIES AND ITS TECHNOLOGY Presentation Transcript

  • A Brief State-of-the-Art ofIce Slurries and itsTechnologyPeter W. EgolfUniversity of Applied Sciences of Western SwitzerlandInstitute of Thermal Sciences and EngineeringHEIG-VD / Hes-so
  • Main components:Plasma (carrier fluid)„Thrombocytes“ (fluidity)„Erythrocytes“ (red blood cells,transport)„Leukocytes“ (white blood cells,protection)Multifunctional fluids in nature, e.g. human blood
  • Technical multifunctional fluidsMicro- capsuleslurriesMicro- capsuleslurriesShapestabilizedparaffinsShapestabilizedparaffinsMicro-emulsionslurriesMicro-emulsionslurriesClathrateslurriesClathrateslurriesIce slurriesIce slurriesAn overview of phase change slurries (PCS), which show a solid-liquid phase transition.This graphic was designed on the basis of Inaba, 2000.
  • Thermal storage materialsSource:International Energy AgencyAnnex 18Sensible heat storagewith water
  • Phase change materialsType Substances Tm(°C)Hm(kJ/kg)Ref.Ice/water/additives Ice slurries -5 to 0 80-150 Egolfet al.Paraffins Eicosane, Docosane, etc. -12 to 71 128-197 Jahnset al.Non-paraffin organics Beewaxes -13 to187131-438 Wirzet al.Metallics Eutectic Bi-Cd-In 30-125 200-800 Wirzet al.Salt Hydrates MgSO4-7H2O 28-137 270-650 Wirzet al.Metal-salt compounds Ni-activated porousceramics1070-1130280-480 Wirzet al.
  • Ice slurry productionLiquid filmIce slurry
  • Newest ice slurry generatorsa) Stamatiou et al., 2005b) Stamatiou et al., 2003c) Lim, 2004See also review of Zhangand Ma, 2012.
  • Ice slurry ice particlesPhotography:Didier VuarnozUniversity of AppliedSciences of WesternSwitzerlandTime behaviourdiscovered byFrei and Egolf, 2000.
  • Laboratory installation at HEIG-VD/IGT/TIS
  • Specific enthalpy measurements0102030405060-15 -10 -5 0 5 10 15Chaleurspécifique(kJ/kgK)Temperature (°C)q = 78.2 kW/m2m = 0.7 kg/sq = 68.5 kW/m2m = 0.69 kg/sq = 8.8 kW/m2m = 0.37 kg/scalcul numériqueSpecificheat(kJ/kg)Effective specific heat isthe derivative of the specificenthalpy
  • Ice slurry storagea) Homogeneous ice slurry storageb) Heterogenous ice slurry storageFrom: Egolf et al., 2008
  • Rheological behaviorτγ.bτ0Dynamic viscosity η+Critical shear stress τ0UVP Technology (Takeda/Vuarnoz)
  • Multifunctional fluids in nature, e.g human blood0501001502000 2 4 6 8 10PositionacrossthepipeVelocity (m/s)Moving bed flowTheoretical model, Egolf et al, 2004.
  • • Supermarket refrigeration• Air conditioning• Food cooling (direct cooling)• Aero plane cabine cooling, etc.Applications of ice slurryhttp://www.icesynergy.com/L4-1-fishchill.html
  • 1) The technology has been mainly developed2) Theories and calculation methods exist (IIR Handbook, 2005)3) Advantage of high enthalpy density4) Fluid ice (very simple and efficient transport of cold)5) In case of blogging warming-up solves the problem6) Advantage is the excellent cooling properties for any kind offoodConclusions