HEAT-TRANSFER AND PRESSURE-DROP IN CERAMIC FOAMS IN FORCED CONVECTIVEFLOW

The convective heat transfer coefficient and pressure drop in ceramic foam structures are measured. Cordierite foams with 10, 20, 30 und 50 pores per inch (PPI) at empty tube velocities (of air) at 0.5 to 14 m/ s are investigated. The convective heat transfer between fluid and sub strate is described well within this velocity range by means of the as sumption Nu = c . Re(m) . Pr1/3. The experimental method developed to obtain the values of c and m is described. The data thus gained are di scussed in view of an application of ceramic foams as catalyst support s and are compared with data of conventional parallel channel monolith s mentioned in the literature.