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Träfflista för sökning "AMNE:(ENGINEERING AND TECHNOLOGY Environmental Engineering Other Environmental Engineering) srt2:(1980-1984)"

Sökning: AMNE:(ENGINEERING AND TECHNOLOGY Environmental Engineering Other Environmental Engineering) > (1980-1984)

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  • Bjurström, Henrik, et al. (författare)
  • Thermal Conductivity of a Microporous Particulate Medium
  • 1984
  • Ingår i: International journal of heat and mass transfer. - : Elsevier BV. - 0017-9310. ; 27:11, s. 2025-2036
  • Tidskriftsartikel (refereegranskat)abstract
    • A systematic study of the thermal conductivity of beds of moist silica gel is presented. The influence of porosity, water content, total gas pressure and temperature is determined through measurements under transient conditions with the transient hot-strip (THS) method and under static conditions in a bench-scale reactor. The predictions of the effective thermal conductivity of the beds from four different simple models (Russell, geometric mean value, unit-cell model and stochastic model) agree reasonably well with the experimental results. The unit-cell model is extended in order to account for the water sorbed in the micropores and describes satisfactorily the dependency of the effective thermal conductivity on the water content. 
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  • Carlsson, Bo, et al. (författare)
  • A method and apparatus for storing heat
  • 1980
  • Patent (populärvet., debatt m.m.)abstract
    • The invention relates to a method and apparatus for storing heat in a heat-of-fusion storage medium, e.g. a salt hydrate, and the heat exchange and mixing in conjunction with the taking of heat from the storage medium. In a closed system including a vapor chamber (5) and a chamber for a solid/liquid phase, the storage medium (2, 4) is brought into direct contact with a substance, i.e., a heat transfer medium (3) having the capacity of taking up heat from the storage medium by being vaporized. The vapor travels to the vapor chamber (5), and when heat is removed from the vapor, the vapor is caused to condense and the condensate returns to the storage medium. The substance has insignificant solubility in the storage medium and a density which is higher, or equal to the density of the storage medium in its liquid phase. Suitable combinations of storage medium and substance include calcium chloride hexahydrate and trifluorotrichloroethane or Clauber's salt and octafluorocyclobutane. 
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  • Resultat 1-10 av 33

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