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Mechanism Study of Waste Heat Recovery from Slurry by Surface Scraped Heat Exchanger
State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing.
State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing.
Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing .
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2017 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 105, 1109-1115 p.Article in journal (Refereed) Published
Abstract [en]

Waste-heat recovery from discharged slurries can improve the net raw biogas production in bio-methane process in order to meet the demand of a new generation of anaerobic digestion. In order to achieve a high efficient waste-heat recovery, in this work, a mathematical model of waste-heat recovery process with surface scraped heat exchanger (SSHE) was proposed with the consideration of the shear rate and temperature-dependent rheological behaviour. The convective heat transfer performance of SSHE was calculated numerically where slurry was considered. The contribution of waste heat recovery from the slurry to biogas production by SSHE and general shell-and-tube heat exchanger (STHE) were firstly calculated quantitatively, and the increase of net raw biogas production could be over 13.5% by SSHE with need of heat exchange area less than a quarter of STHE's, which showed a great potential to increase the net raw biogas production in bio-methane process with low equipment investments and more compactible structure.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 105, 1109-1115 p.
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-63736DOI: 10.1016/j.egypro.2017.03.474ISI: 000404967901031OAI: oai:DiVA.org:ltu-63736DiVA: diva2:1105789
Conference
8th International Conference on Applied Energy, ICAE2016, Beijing, China, 8-11 October 2016
Note

2017-06-05 (andbra);Konferensartikel i tidskrift

Available from: 2017-06-05 Created: 2017-06-05 Last updated: 2017-11-24Bibliographically approved

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Chen, JingjingMa, ChunyanJi, Xiaoyan

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