Abstract
The pulp chip method is a method specially designed for thinning in forests with small dimension trees. An industrial raw material in the form of ready-to-use pulp chips is produced directly at the stump. This is made possible by machinery which combines the delimbing, debarking, chipping and loading processes into a single series, so that the processing, from tree with limbs intact to debarked chips on the load carrier, can be done in one uninterrupted sequence. The experimental study shows that the productivity is strongly dependent on diameter and log length. The mean productivity was 4.2 m3 solid volume under bark per effective hour. To balance processing and feeding, log length has to be 9-10 m. Shorter logs mean that the processing unit can not be fully utilized. A serious problem during processing was feeding when the tree section has been cross cut close to a whorl of branches. Because of this problem a volume of 60 m3 out of 165 m3 was not processed into pulp chips. The time consumption for feeding therefore exceeded time consumption for processing to a large extent. As a result of this unbalanced situation utilization of the processing unit was only 18.9% and productivity
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Froeding, A
[1]
- Swedish Univ. of Agricultural Sciences, Garpenberg (SE). Dept. of Operational Efficiency
Citation Formats
Froeding, A.
The pulp chip method - processing tree sections at the landing; Avlaeggsbaserad upparbetning av traeddelar med massaflismetoden.
Sweden: N. p.,
1991.
Web.
Froeding, A.
The pulp chip method - processing tree sections at the landing; Avlaeggsbaserad upparbetning av traeddelar med massaflismetoden.
Sweden.
Froeding, A.
1991.
"The pulp chip method - processing tree sections at the landing; Avlaeggsbaserad upparbetning av traeddelar med massaflismetoden."
Sweden.
@misc{etde_10133908,
title = {The pulp chip method - processing tree sections at the landing; Avlaeggsbaserad upparbetning av traeddelar med massaflismetoden}
author = {Froeding, A}
abstractNote = {The pulp chip method is a method specially designed for thinning in forests with small dimension trees. An industrial raw material in the form of ready-to-use pulp chips is produced directly at the stump. This is made possible by machinery which combines the delimbing, debarking, chipping and loading processes into a single series, so that the processing, from tree with limbs intact to debarked chips on the load carrier, can be done in one uninterrupted sequence. The experimental study shows that the productivity is strongly dependent on diameter and log length. The mean productivity was 4.2 m3 solid volume under bark per effective hour. To balance processing and feeding, log length has to be 9-10 m. Shorter logs mean that the processing unit can not be fully utilized. A serious problem during processing was feeding when the tree section has been cross cut close to a whorl of branches. Because of this problem a volume of 60 m3 out of 165 m3 was not processed into pulp chips. The time consumption for feeding therefore exceeded time consumption for processing to a large extent. As a result of this unbalanced situation utilization of the processing unit was only 18.9% and productivity 1.7 m3 solid volume under bark per hour. This is less than normal productivity when processing at the stump even if a terrain transport of 200 m is included. It is obvious that the pulp chipper in its present shape is not suitable for processing tree sections. To make this method more efficient and of economical interest it is a strong desire to develop techniques for whole tree extraction.}
place = {Sweden}
year = {1991}
month = {Dec}
}
title = {The pulp chip method - processing tree sections at the landing; Avlaeggsbaserad upparbetning av traeddelar med massaflismetoden}
author = {Froeding, A}
abstractNote = {The pulp chip method is a method specially designed for thinning in forests with small dimension trees. An industrial raw material in the form of ready-to-use pulp chips is produced directly at the stump. This is made possible by machinery which combines the delimbing, debarking, chipping and loading processes into a single series, so that the processing, from tree with limbs intact to debarked chips on the load carrier, can be done in one uninterrupted sequence. The experimental study shows that the productivity is strongly dependent on diameter and log length. The mean productivity was 4.2 m3 solid volume under bark per effective hour. To balance processing and feeding, log length has to be 9-10 m. Shorter logs mean that the processing unit can not be fully utilized. A serious problem during processing was feeding when the tree section has been cross cut close to a whorl of branches. Because of this problem a volume of 60 m3 out of 165 m3 was not processed into pulp chips. The time consumption for feeding therefore exceeded time consumption for processing to a large extent. As a result of this unbalanced situation utilization of the processing unit was only 18.9% and productivity 1.7 m3 solid volume under bark per hour. This is less than normal productivity when processing at the stump even if a terrain transport of 200 m is included. It is obvious that the pulp chipper in its present shape is not suitable for processing tree sections. To make this method more efficient and of economical interest it is a strong desire to develop techniques for whole tree extraction.}
place = {Sweden}
year = {1991}
month = {Dec}
}