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A novel freeze protection strategy for shallow buried sewer pipes: temperature modelling and field investigation
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Arkitektur och vatten.ORCID-id: 0000-0002-8804-8417
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Arkitektur och vatten.ORCID-id: 0000-0003-1725-6478
Vise andre og tillknytning
2017 (engelsk)Inngår i: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 76, nr 2, s. 294-301Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The burial of sewer and water pipes below the maximum ground frost depth can be very costly and laborious in regions with cold winters. If a freeze protection measure is applied, the utility lines can be installed in a shallower trench to reduce the excavation needs. One freeze protection measure, so called heat tracing, consists in supplying heat along the pipes. In this work, the use of 4th generation district heating as a heat tracing solution was investigated at a pilot site in Kiruna, Sweden. The influence of the system on sewer and water pipe temperatures was studied at a snow-free and snow-covered cross section. To this end, five heat tracing temperatures were tested and the corresponding sewer and water pipe temperatures were measured. The field experiment was also simulated with a two dimensional finite volume model. The study showed that, under the climatic conditions of the experiment, a heat tracing temperature of 25 °C allowed to prevent freezing of the pipes while keeping drinking water pipes in a safe temperature range at both cross sections. The other main result was that the developed finite volume model of the sections showed a good fitting to the experimental data

sted, utgiver, år, opplag, sider
IWA Publishing, 2017. Vol. 76, nr 2, s. 294-301
Emneord [en]
District heating, heat tracing, low temperature, pipe insulation, temperature modelling, utilidor
HSV kategori
Forskningsprogram
VA-teknik; Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-63285DOI: 10.2166/wst.2017.174ISI: 000406789800006PubMedID: 28726696Scopus ID: 2-s2.0-85026329219OAI: oai:DiVA.org:ltu-63285DiVA, id: diva2:1094110
Merknad

Validerad;2017;Nivå 2;2017-08-15 (rokbeg)

Tilgjengelig fra: 2017-05-09 Laget: 2017-05-09 Sist oppdatert: 2019-03-08bibliografisk kontrollert
Inngår i avhandling
1. Shallow co-location of water, sewer and district heating pipes: Applicability in cold climate regions
Åpne denne publikasjonen i ny fane eller vindu >>Shallow co-location of water, sewer and district heating pipes: Applicability in cold climate regions
2019 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Alternativ tittel[sv]
Grund samförläggning av VA- och fjärrvärmeledningar ovanför tjäldjupet : möjlighet i kalla regioner?
sted, utgiver, år, opplag, sider
Luleå: Luleå University of Technology, 2019
Serie
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
HSV kategori
Forskningsprogram
VA-teknik
Identifikatorer
urn:nbn:se:ltu:diva-73137 (URN)978-91-7790-326-0 (ISBN)978-91-7790-327-7 (ISBN)
Presentation
2019-05-10, C305, LTU, Luleå, 10:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2019-03-08 Laget: 2019-03-08 Sist oppdatert: 2019-05-03bibliografisk kontrollert

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Forlagets fulltekstPubMedScopushttp://wst.iwaponline.com/content/76/2/294

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Pericault, YouenRisberg, MikaelVesterlund, MattiasViklander, MariaHedström, Annelie

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