Pipe internal recirculation in storage connections - An unseen efficiency barrier

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dc.identifier.uri http://dx.doi.org/10.15488/4494
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4534
dc.contributor.author Steinweg, Jan
dc.contributor.author Kliem, Francis
dc.contributor.author Littwin, Matthias
dc.contributor.author Rockendorf, Gunter
dc.date.accessioned 2019-03-06T09:48:59Z
dc.date.available 2019-03-06T09:48:59Z
dc.date.issued 2015
dc.identifier.citation Steinweg, J.; Kliem, F.; Littwin, M.; Rockendorf, G.: Pipe internal recirculation in storage connections - An unseen efficiency barrier. In: Energy Procedia 73 (2015), S. 341-349. DOI: https://doi.org/10.1016/j.egypro.2015.07.704
dc.description.abstract Basically, pipe internal recirculation (PIR) at storage connections is a known phenomenon. However, it is not sufficiently considered by storage manufacturers and installers. There is still a lack of awareness and quantification of the PIR effect in typical installations and practice-oriented solutions. Within this paper, the final results of a research project aiming at the detailed qualitative description and quantification of the effect including extrapolation of the results regarding the PIR impact on storage heat losses are presented. This includes the results regarding the influence of the pipe's material (copper, stainless steel, plastic), diameter, insulation and connection type (direct to storage, indirect via immersed or external heat exchanger) on PIR including their effects on the overall heat losses of ready installed storage tanks. Derived from generalized measurements, a calculation method has been developed, which enables to determine the annual heat losses caused by PIR in domestic hot water storages using dynamic system simulations (TRNSYS). In conclusion, different measures for the reduction of PIR induced heat losses and their effectiveness may be presented. © 2015 The Authors. eng
dc.language.iso eng
dc.publisher London : Elsevier Ltd.
dc.relation.ispartof 9th International Renewable Energy Storage Conference, IRES 2015, March 9-11, 2015, Düsseldorf, Germany
dc.relation.ispartofseries Energy Procedia 73 (2015)
dc.rights CC BY-NC-ND 4.0
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject heat losses eng
dc.subject pipe connection eng
dc.subject pipe internal recirculation eng
dc.subject Thermal storage eng
dc.subject Energy storage eng
dc.subject Heat losses eng
dc.subject Heat storage eng
dc.subject Plastic pipe eng
dc.subject Stainless steel eng
dc.subject Domestic hot water eng
dc.subject Dynamic system simulation eng
dc.subject External heat exchangers eng
dc.subject Internal recirculations eng
dc.subject Storage tank eng
dc.subject Thermal storage eng
dc.subject Storage (materials) eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Pipe internal recirculation in storage connections - An unseen efficiency barrier
dc.type article
dc.type Text
dc.type conferenceObject
dc.relation.issn 1876-6102
dc.relation.doi https://doi.org/10.1016/j.egypro.2015.07.704
dc.bibliographicCitation.volume 73
dc.bibliographicCitation.firstPage 341
dc.bibliographicCitation.lastPage 349
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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    Frei zugängliche Publikationen aus An-Instituten der Leibniz Universität Hannover

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