Abstract
The primary objective of the study was to determine the most important factors for increasing or maximizing the output of the earth clamp method of charcoal production and their effects on charcoal quality. A secondary aim was to propose measures that would be needed in order to enable charcoal producers to adopt high yielding practices. Altogether, six factors were investigated namely, wood arrangement in a kiln, direction of carbonization in relation to prevailing wind direction, moisture content, insulation thickness, weight distribution (distribution of log sizes in a kiln) and size of kiln. None of the factors investigated influenced the yield by more than 25%. The cross-wise method of wood arrangement gave a slightly higher yield than length-wise loading, but yielded charcoal of a higher quality. Firing the kiln along the prevailing wind direction gave better output than firing against the wind. The moisture content of the wood was observed to have only a small effect on the yield and quality of charcoal. In the case of weight distribution, the use of smaller logs gave a better yield of charcoal than large logs. These results shows that wood that is currently discarded because it is considered too small for charcoal production
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Hibajene, S H
[1]
- Ministry of Energy and Water Development, Department of Energy (Zambia)
Citation Formats
Hibajene, S H.
Assessment of earth kiln charcoal production technology.
Sweden: N. p.,
1994.
Web.
Hibajene, S H.
Assessment of earth kiln charcoal production technology.
Sweden.
Hibajene, S H.
1994.
"Assessment of earth kiln charcoal production technology."
Sweden.
@misc{etde_10122143,
title = {Assessment of earth kiln charcoal production technology}
author = {Hibajene, S H}
abstractNote = {The primary objective of the study was to determine the most important factors for increasing or maximizing the output of the earth clamp method of charcoal production and their effects on charcoal quality. A secondary aim was to propose measures that would be needed in order to enable charcoal producers to adopt high yielding practices. Altogether, six factors were investigated namely, wood arrangement in a kiln, direction of carbonization in relation to prevailing wind direction, moisture content, insulation thickness, weight distribution (distribution of log sizes in a kiln) and size of kiln. None of the factors investigated influenced the yield by more than 25%. The cross-wise method of wood arrangement gave a slightly higher yield than length-wise loading, but yielded charcoal of a higher quality. Firing the kiln along the prevailing wind direction gave better output than firing against the wind. The moisture content of the wood was observed to have only a small effect on the yield and quality of charcoal. In the case of weight distribution, the use of smaller logs gave a better yield of charcoal than large logs. These results shows that wood that is currently discarded because it is considered too small for charcoal production can actually be used at good advantage. The charcoal from kilns in which small logs dominated yielded charcoal with less volatile matter than from the kilns where large logs were dominant. Hence both in terms of production and end-use the small logs have an advantage over the large logs. 7 refs, 5 figs, 3 tabs}
place = {Sweden}
year = {1994}
month = {Dec}
}
title = {Assessment of earth kiln charcoal production technology}
author = {Hibajene, S H}
abstractNote = {The primary objective of the study was to determine the most important factors for increasing or maximizing the output of the earth clamp method of charcoal production and their effects on charcoal quality. A secondary aim was to propose measures that would be needed in order to enable charcoal producers to adopt high yielding practices. Altogether, six factors were investigated namely, wood arrangement in a kiln, direction of carbonization in relation to prevailing wind direction, moisture content, insulation thickness, weight distribution (distribution of log sizes in a kiln) and size of kiln. None of the factors investigated influenced the yield by more than 25%. The cross-wise method of wood arrangement gave a slightly higher yield than length-wise loading, but yielded charcoal of a higher quality. Firing the kiln along the prevailing wind direction gave better output than firing against the wind. The moisture content of the wood was observed to have only a small effect on the yield and quality of charcoal. In the case of weight distribution, the use of smaller logs gave a better yield of charcoal than large logs. These results shows that wood that is currently discarded because it is considered too small for charcoal production can actually be used at good advantage. The charcoal from kilns in which small logs dominated yielded charcoal with less volatile matter than from the kilns where large logs were dominant. Hence both in terms of production and end-use the small logs have an advantage over the large logs. 7 refs, 5 figs, 3 tabs}
place = {Sweden}
year = {1994}
month = {Dec}
}