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Pressure losses during ventilation of manure
AbstractIn order to improve the aerobic fermentation of manure, which is the first step in the Ducellier-Isman batch methane fermentation and appropriate for any straw-based manure, air pressure loss was measured in relation to the air flow-rate through different types of manures. A fan was used to blow air through a 1-m-high and 0·6 m diameter pile of manure placed over a perforated floor. Five artificially produced manures, differing by the amount of straw added to the original slurry, and three manures from an open cattle shed, were tested. Bulk density and dry matter content allowed a good classification of these different types of manure. Pressure drop (ΔP) versus air speed (V) is a power law, ΔP = AVn. A and n were determined for the different types of manure. The results from real and artificially-produced manures were similar. The main interest of these results is to provide essential information for the choice of the most appropriate fan able to overcome the resistance in the aeraulic circuit. These results may also give a good indication in the case of production of compost in forced-air ventilation processes.
Pressure losses during ventilation of manure
AbstractIn order to improve the aerobic fermentation of manure, which is the first step in the Ducellier-Isman batch methane fermentation and appropriate for any straw-based manure, air pressure loss was measured in relation to the air flow-rate through different types of manures. A fan was used to blow air through a 1-m-high and 0·6 m diameter pile of manure placed over a perforated floor. Five artificially produced manures, differing by the amount of straw added to the original slurry, and three manures from an open cattle shed, were tested. Bulk density and dry matter content allowed a good classification of these different types of manure. Pressure drop (ΔP) versus air speed (V) is a power law, ΔP = AVn. A and n were determined for the different types of manure. The results from real and artificially-produced manures were similar. The main interest of these results is to provide essential information for the choice of the most appropriate fan able to overcome the resistance in the aeraulic circuit. These results may also give a good indication in the case of production of compost in forced-air ventilation processes.
Pressure losses during ventilation of manure
Saint-Joly, C. (author) / Peyre, A. (author) / Bochu, J.L. (author) / N'Dao, O. (author)
Biological Wastes ; 30 ; 123-132
1989-03-23
10 pages
Article (Journal)
Electronic Resource
English
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