Abstract
Kujawa, Nowak and Szaflik [3, 4] presented an approximate analytical methods of calculation for the Field exchangers with insulated and no insulated top part with intermediate fluid. In this work the authors modified the method of calculations for the Field exchanger. In this method a boundary condition assuming equal temperatures at the turning point was calculated during determining integration constants. That allows one to get an analytical relation, which enables to directly determine the temperature field of fluid in the heat exchanger. That operation simplified the calculations of output heat and cut down the time of the calculations. The authors also analysed the influence of main parameters on the temperature field as well as on an output heat flow by intermediate fluid in a geothermal exchanger.
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References
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Kujawa T., Nowak W. One-Hole Systems with Injection and Production well Thermal Calculations of Heat Utilisation. In: Proc. of the Fifth World Renewable Energy Congress ed. A.A.M. Sayigh, Part IV, pp. 2469–2472, 1998.
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Kujawa, T., Nowak, W. (2002). Modified Thermal Calculations of a Geothermal Double-Pipe Heat Exchanger (with Insulation And No Insulation) Immersed into Geothermal Deposit. In: Afgan, N.H., da Graça Carvalho, M. (eds) New and Renewable Technologies for Sustainable Development. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-0296-8_51
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DOI: https://doi.org/10.1007/978-1-4615-0296-8_51
Publisher Name: Springer, Boston, MA
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