Poultry litter (combination of accumulated manure and bedding materials) was pelleted through a 3/16-in.(4.76-mm) diameter die. The storage and handling properties of the pellets were measured within a moisture range of 6.0%and 22.0% (w.b.). Bulk density and particle density of the pelleted litter respectively decreased and increased with increasein moisture content. The force required to rupture the pellets varied from 316 N at 6.0% moisture content to 68 N at 22.0%w.b. Durability of the pellets were also affected by moisture content. Pellet moisture absorption rates were significantly (P <0.05) affected by air relative humidity. The values of thermal conductivity, thermal diffusivity and specific heat for the pelletswere respectively obtained to be 0.264W/m K, 2.67 . 10-7 m2/s, and 1265.6 J/kg K.
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McMullen et al. (2005) studied this question.
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