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Internal Heat Exchange in Progressive Kilns
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0003-3298-1416
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
2015 (English)In: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 11, no 4, 318-323 p.Article in journal (Refereed) Published
Abstract [en]

In this work possible energy savings were investigated by introducing a new layout of a 2-zone progressive kiln. The layout consisted of installing a door between the first and second zone, thereby allowing the two zones to be run at different temperature levels -making internal heat recovery possible. An Optimized Two Stage continuous kiln is dimensioned for drying sideboard of Norway spruce (Picea abies L. Karst) with the aid of a commercial simulation program. Temperature levels of 75/55°C (dry bulb/wet bulb) were chosen at the pressure side of zone 1 and 45/25°C (dry bulb/wet bulb) at the pressure side of zone 2. The capacity of the heat exchanger was assumed to be sufficient to make the suggested design functional and no consideration was given to the increased air flow resistance the introduction of the heat exchanger would cause. The results indicated that roughly 30% of the heat is possible to recover in comparison to a traditional kiln. It was finally concluded that the influence of ingoing process parameters needs to be implemented in the kiln control system to fully utilize the kilns potential.

Place, publisher, year, edition, pages
2015. Vol. 11, no 4, 318-323 p.
National Category
Bio Materials Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-5321Local ID: 3636303a-3313-4c4b-8762-7e475e8d4b03OAI: oai:DiVA.org:ltu-5321DiVA: diva2:978195
Note

Validerad; 2016; Nivå 1; 20151214 (tomvik)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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CiteExportLink to record
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