MIND based optimisation and energy analysis of a sawmill production line
2010 (English)In: PRES 2010: 13th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, 28 August - 1 September 2010, Prague, Czech Republic, 2010, 1-5 p.Conference paper (Refereed)
The lumber drying process uses about 80 % of the total heat consumption in sawmills. Efforts to increase energy efficiency in lumber kilns were very restricted due to the low biomass prices between the 80th and 90th. Today with higher production and biomass prices, companies want to decrease their own use of biomass and increase the heating system efficiency. The study proposes alternative ways to reduce the heat consumption at batch kilns by recirculation of the evacuation air and addresses particular problem encountered in sawmills. Which produce their own heat and suffer from bottlenecks in the heating system due to high heat load from the dryers and increased production. The study shows the possibility to recycle the evacuation air from each kiln which reduces the overall heat consumption of the kilns by 12 %. At nationally basis this corresponds to a decrease of heat consumption of 440 GWh annually, among Swedish sawmill. This will decrease the individual heat consumption of the kilns, heat load in the heating system and the bottleneck effect in the drying process. The decreased own use of biomass brings benefits of more available biomass to the market and increased profits for the sawmill.
Place, publisher, year, edition, pages
2010. 1-5 p.
Research subject Energy Engineering
IdentifiersURN: urn:nbn:se:ltu:diva-40490Local ID: fa583a10-02bf-11e0-803d-000ea68e967bOAI: oai:DiVA.org:ltu-40490DiVA: diva2:1014012
Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction : 28/08/2010 - 01/09/2010
Godkänd; 2010; 20101208 (janand)2016-10-032016-10-03Bibliographically approved