Abstract
Computer modelling of the grinding event, and studies of the mechanisms of the grinding process aimed at determining grindstone structure and the temperature in the grinding zone between stone and wood have extended our understanding of the process and improved the prospects for making grinding more efficient. The aim of the project was to develop a model of grinding that takes into account the viscoelasic properties of wood and the stone sharpness as a physically measurable quantity. All the variables in the model have been verified and it should now be possible to use the model as a means of controlling the grinding process. One aim was to study the role of shower water in grinding. Changing the shower water temperature and flow rate affects the cooling of the stone and thus indirectly the defibration temperature. If the external pressure is not increased, a rise in defibration temperature due to a lower shower flow rate means a high risk of steam formation in the grinding zone. This adversely affects groundwood quality, although it does bring a small reduction in energy consumption
Citation Formats
Loennberg, B, Bengs, U, Finell, M, and Halminen, J.
Grinding parameters and energy consumption. Final report; Energibehovet som funktion av slipparametrarna; Slutrapport.
Finland: N. p.,
1993.
Web.
Loennberg, B, Bengs, U, Finell, M, & Halminen, J.
Grinding parameters and energy consumption. Final report; Energibehovet som funktion av slipparametrarna; Slutrapport.
Finland.
Loennberg, B, Bengs, U, Finell, M, and Halminen, J.
1993.
"Grinding parameters and energy consumption. Final report; Energibehovet som funktion av slipparametrarna; Slutrapport."
Finland.
@misc{etde_10111523,
title = {Grinding parameters and energy consumption. Final report; Energibehovet som funktion av slipparametrarna; Slutrapport}
author = {Loennberg, B, Bengs, U, Finell, M, and Halminen, J}
abstractNote = {Computer modelling of the grinding event, and studies of the mechanisms of the grinding process aimed at determining grindstone structure and the temperature in the grinding zone between stone and wood have extended our understanding of the process and improved the prospects for making grinding more efficient. The aim of the project was to develop a model of grinding that takes into account the viscoelasic properties of wood and the stone sharpness as a physically measurable quantity. All the variables in the model have been verified and it should now be possible to use the model as a means of controlling the grinding process. One aim was to study the role of shower water in grinding. Changing the shower water temperature and flow rate affects the cooling of the stone and thus indirectly the defibration temperature. If the external pressure is not increased, a rise in defibration temperature due to a lower shower flow rate means a high risk of steam formation in the grinding zone. This adversely affects groundwood quality, although it does bring a small reduction in energy consumption}
place = {Finland}
year = {1993}
month = {Oct}
}
title = {Grinding parameters and energy consumption. Final report; Energibehovet som funktion av slipparametrarna; Slutrapport}
author = {Loennberg, B, Bengs, U, Finell, M, and Halminen, J}
abstractNote = {Computer modelling of the grinding event, and studies of the mechanisms of the grinding process aimed at determining grindstone structure and the temperature in the grinding zone between stone and wood have extended our understanding of the process and improved the prospects for making grinding more efficient. The aim of the project was to develop a model of grinding that takes into account the viscoelasic properties of wood and the stone sharpness as a physically measurable quantity. All the variables in the model have been verified and it should now be possible to use the model as a means of controlling the grinding process. One aim was to study the role of shower water in grinding. Changing the shower water temperature and flow rate affects the cooling of the stone and thus indirectly the defibration temperature. If the external pressure is not increased, a rise in defibration temperature due to a lower shower flow rate means a high risk of steam formation in the grinding zone. This adversely affects groundwood quality, although it does bring a small reduction in energy consumption}
place = {Finland}
year = {1993}
month = {Oct}
}