The energy performance of vacuum evaporators for liquid digestate treatment in biogas plants

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dc.contributor.authorVondra, Marekcs
dc.contributor.authorMáša, Vítězslavcs
dc.contributor.authorBobák, Petrcs
dc.coverage.issue146cs
dc.date.accessioned2020-08-04T11:03:26Z
dc.date.available2020-08-04T11:03:26Z
dc.date.issued2018-03-01cs
dc.description.abstractVacuum evaporation is an efficient method for reducing the volume of liquid digestate (LD) from biogas plants (BGP). Furthermore, thickening LD in BGP contributes to the efficient utilization of waste heat and also reduces fossil fuel consumption that is needed for transporting LD. However, the utilization of vacuum evaporation must be reasonable, and a comprehensive study should precede the integration of evaporation technology in a particular BGP. For this purpose, this study compares selected parameters of three types of industrial evaporators which may be suitable for LD thickening. Furthermore, this study provides a mathematical model that describes the mass and energy balances of the chosen evaporators and is able to evaluate their energy performance for a given set of input variables. It was concluded that the forced-circulation evaporator has the highest energy requirements and also requires a high cooling performance. This type of evaporator will be interesting for the plant owners only if the cost of power generation is extremely low. In terms of consumption of energy and cooling duty, the multi-stage flash evaporator is the most efficient and it also requires the least heat transfer area. The falling-film evaporator provides only slightly worse performance.en
dc.formattextcs
dc.format.extent141-155cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEnergy. 2018, issue 146, p. 141-155.en
dc.identifier.doi10.1016/j.energy.2017.06.135cs
dc.identifier.issn0360-5442cs
dc.identifier.other138086cs
dc.identifier.urihttp://hdl.handle.net/11012/184687
dc.language.isoencs
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDcs
dc.relation.ispartofEnergycs
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0360544217311337cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0360-5442/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectvacuum evaporationen
dc.subjectliquid digestateen
dc.subjectanaerobic digestionen
dc.subjectbiogas planten
dc.subjectenergy consumptionen
dc.subjectnutrient recoveryen
dc.titleThe energy performance of vacuum evaporators for liquid digestate treatment in biogas plantsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionacceptedVersionen
sync.item.dbidVAV-138086en
sync.item.dbtypeVAVen
sync.item.insts2020.11.10 17:22:59en
sync.item.modts2020.11.10 17:12:34en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav procesního inženýrstvícs
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