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dc.contributor.authorCimmino, Massimo
dc.contributor.otherIGSHPA Technical/Research Conference and Expo (2017)
dc.date.accessioned2017-03-06T15:38:12Z
dc.date.available2017-03-06T15:38:12Z
dc.date.issued2017
dc.identifieroksd_igshpa_2017_Cimmino
dc.identifier.urihttps://hdl.handle.net/11244/49312
dc.description.abstractA fully-coupled model of geothermal bore fields is presented, taking into account the axial variations of borehole wall temperatures and heat extraction rates along the borehole lengths, fluid temperature variations inside the U-tubes and depth-variation of ground temperature due to seasonal ambient temperature variations. The model incorporates an analytical finite line source model to calculate borehole wall temperatures. A steady-state analytical solution is used to calculate fluid temperatures from arbitrary borehole wall temperature profiles. Ground temperatures are calculated from a one-dimensional analytical solution to heat conduction in semi-infinite media with varying surface temperature. A system of equations is built and solved in the Laplace domain. The specific case of boreholes connected in series is discussed. Different assumptions for time- and depth-variation of ground temperatures are compared. Results show that time-varying uniform ground temperatures is accurate for simulations, with differences in predicted fluid temperatures within 1.5% of time-varying non-uniform ground temperatures.
dc.formatapplication/pdf
dc.languageen_US
dc.publisherInternational Ground Source Heat Pump Association
dc.rightsIn the Oklahoma State University Library's institutional repository this paper is made available through the open access principles and the terms of agreement/consent between the author(s) and the publisher. The permission policy on the use, reproduction or distribution of the article falls under fair use for educational, scholarship, and research purposes. Contact Digital Resources and Discovery Services at lib-dls@okstate.edu or 405-744-9161 for further information.
dc.subjectground source heat pump systems
dc.titleExamination of ambient temperature variations effects on predicted fluid temperatures in vertical boreholes
osu.filenameoksd_igshpa_2017_Cimmino.pdf
dc.identifier.doi10.22488/okstate.17.000506
dc.type.genreConference proceedings
dc.type.materialText


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