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Energy performance of an industrial superheated steam heat pump flash dryer for drying of bio-fuel
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).ORCID iD: 0000-0002-5764-7062
2018 (English)In: IDS'2018: 21ST INTERNATIONAL DRYING SYMPOSIUM / [ed] Carcel, JA Clemente, G GarciaPerez, JV Mulet, A Rossello, C, University Politecnica Valencia , 2018, p. 1495-1502Conference paper, Published paper (Refereed)
Abstract [en]

Drying is an energy demanding industrial process and methods for reducing the energy consumption of drying is of interest to industry as well as society. This article presents the drying system of a biofuel factory. Steam is used as the refrigerant. Superheated steam is used as drying gas in a flash dryer with 28.8 tons/h dewatering capacity. The system includes an energy recovering water heat pump that receives its heat from the excess drying steam and heats the dryer. The SMER of the drying process ranges between 3 and 4 and the COP of the heat pump process ranges between 4 and 5.5 during one production season of peat drying. Variations in performance can be explained by variations in inlet moisture content and production rate. The example of this drying system shows the feasibility of drying in superheated steam, heat pump drying and water as refrigerant in high-temperature heat pumps.

Place, publisher, year, edition, pages
University Politecnica Valencia , 2018. p. 1495-1502
Keywords [en]
steam drying, heat pump process, peat, sawdust, industrial operation
National Category
Energy Systems
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kau:diva-74340DOI: 10.4995/ids2018.2018.7379ISI: 000477977800187ISBN: 978-84-9048-688-7 (print)OAI: oai:DiVA.org:kau-74340DiVA, id: diva2:1342985
Conference
21st International Drying Symposium (IDS); Valencia, SPAIN; Date: SEP 11-14, 2018
Available from: 2019-08-15 Created: 2019-08-15 Last updated: 2019-08-15

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Renström, Roger

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Citation style
  • apa
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