Re. Critoph et R. Thorpe, MOMENTUM AND HEAT-TRANSFER BY FORCED-CONVECTION IN FIXED-BEDS OF GRANULAR ACTIVE-CARBON, Applied thermal engineering, 16(5), 1996, pp. 419-427
Heat transfer and pressure loss characteristics of packed beds with ac
tive carbon 208C for low Reynolds numbers have been investigated using
inert gases. It is intended that this granular material can be heated
by forced collection of an adsorbant gas as part of a heat pump. This
cycle will rely on the production of a thermal wave to give a high CO
P and thus requires good values of NTU or reduced length. These prelim
inary results suggest that NTU values of 100 may be easily obtained in
this way. Heat transfer coefficients are related to the pressure-drop
characteristic by a modified version of the Reynolds-Colburn analogy.