Determination of the thermal properties of ceramic sponges

On the effective thermal conductivity of aluminum metal foams: Review and improvement of the available empirical and analytical models

“…Last but not least, a brief comment about the value of the solid thermal conductivity used in the models. As already pointed out in the paper, with the exception of the works of Dietrich et al [56] and Kumar and Topin [55], all the analyzed models were formulated according to the bulk conductivity of the solid phase. In this analysis, both the bulk and the intrinsic solid phase conductivity were considered.…”

“…Unfortunately, the intrinsic solid phase thermal conductivity is usually not experimentally measured. Dietrich et al [56] . The thermal diffusivity was estimated by means of laser flash technique, the density through helium pycnometry measurements, while the specific heat capacity by means of a differential scanning calorimetry.…”

“…Moreover, since different manufactures may employ different production techniques, foams made of the same parent material may present dissimilar values of s k . In addition the deviation between k s and s k can be even induced by the presence of impurities [56] or micropores within the solid matrix [57]. Unfortunately, the intrinsic solid phase thermal conductivity is usually not experimentally measured.…”

Fitting Solid Sponges into a Reactor Tube Concerning the Partial Oxidation of o‐Xylene as an Example

“…Die Porendichte wird hierbei in ppi (pores per linear inch) angegeben. Die Schwämme unterscheiden sich neben geometrischen Größen wie Porenfensterdurchmesser, spezifischer Oberfläche und Porosität [9,10] [12]. Die Gruppe Pratsinis an der ETH Zürich (Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering) stellte die Vanadium/Titanoxid Aktivkomponente mittels Flammensprühpyrolyse (FSP) her [8,13].…”

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

“…[13]. Mass and heat transfer have also been studied by different authors under a wide range of operating conditions [6,[14][15][16][17]. The works regarding reaction studies are scarcer, and mainly focused on catalytic oxidations [18][19][20] and porous media burners [21,22].…”