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Design and integration of heat recovery in combination with solar and biomass-based heating in a drying plant
RISE Research Institutes of Sweden, Built Environment, Energy and Resources.ORCID iD: 0000-0003-1232-3854
RISE Research Institutes of Sweden, Built Environment, Energy and Resources.ORCID iD: 0000-0001-6174-1396
RISE Research Institutes of Sweden, Built Environment, Energy and Resources.ORCID iD: 0009-0001-5256-3708
RISE Research Institutes of Sweden, Built Environment, Energy and Resources.
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2020 (English)In: Chemical Engineering Transactions, ISSN 1974-9791, E-ISSN 2283-9216, Vol. 81, p. 1387-1392Article in journal (Refereed) Published
Abstract [en]

The EU27 annually generates 90 Mt of food waste, and approximately 40 % of this waste is generated during manufacturing. The food processing industry needs to develop improved and sustainable solutions for waste valorisation and re-use. The project DRALOD addresses this issue since it aims at design, integration and assessment of the performance of a heat recovery system in connection with an innovative low-temperature air drying unit where high moisture food waste is dewatered and sold as a by-product with preserved nutritional ingredients. The air used for drying is preheated using solar heat and a biomass boiler, and in this project the potential benefits of integration of a heat recovery system have been investigated. Due to the impurities available in the humid exhaust air from the dryer, the heat recovery is designed with two principal systems; a wet scrubber condensation system and a heat pump system. Simulations using hourly meteorological data from Madrid have been made for the total system with heat recovery, and the generated results have been used as inputs in a techno-economic analysis in order to assess the integration of the heat recovery and how sensitive different economic parameters and assumptions are for the results. It can be concluded from the assessment that the prices of electricity and biofuel will have a high impact on the economic performance and design. For the integration of the heat recovery system to be economically justifiable it is estimated, given assumptions made in this analysis, that the electricity cost needs to be less than 5 times higher than the biofuel cost. 

Place, publisher, year, edition, pages
Italian Association of Chemical Engineering - AIDIC , 2020. Vol. 81, p. 1387-1392
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Natural Sciences
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URN: urn:nbn:se:ri:diva-49480DOI: 10.3303/CET2081232Scopus ID: 2-s2.0-85092045401OAI: oai:DiVA.org:ri-49480DiVA, id: diva2:1477152
Note

Funding details: European Commission, EC; Funding details: Horizon 2020, 820554; Funding text 1: This research has been supported by the EU project “Fast Track to Innovation - FTI”, DRALOD is co-funded by the European Commission - Horizon 2020 Programme - under Grant Agreement 820554. The DRALOD project is a collaboration between PERNIA, DBFZ, ÖKOTHERM and RISE. For more information about DRALOD please visit dralod.com.

Available from: 2020-10-16 Created: 2020-10-16 Last updated: 2024-05-17Bibliographically approved

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Wallin, ElinFornell, RickardRäftegård, Oskar

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