Study of a Model for the Evaluation of the Heat Losses from Electric Cables Buried According to the Norm Standard

R. de Lieto Vollaro; A. Vallati

doi:10.4028/www.scientific.net/AMR.650.437

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 650Study of a Model for the Evaluation of the Heat...

Study of a Model for the Evaluation of the Heat Losses from Electric Cables Buried According to the Norm Standard

Abstract:

The capacity of electrical cables buried in the same cross section depends on the capacity to dispose of heat into the ground around him. This depends on many factors: soil characteristics, moisture, installation mode etc. The CEI 20-21 regarding the uses expressions that sometimes are not very cautious and dimensioning of insufficient capacities for cables. This work has been done a study of the behavior of underground cable based on using a forecasting model that uses the techniques of cfd. This model was validated with a physical model in miniature, made from data collected in situ measurement campaigns carried out in underground conduits in the province of Foggia (Italy) that allowed the choice of the mesh to get more 'correct solution to of the problem. Thus it was possible to evaluate the differences with the CEI and attribute the correction factors that lead to more realistic values.

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Periodical:

Advanced Materials Research (Volume 650)

Pages:

437-442

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.650.437

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Online since:

January 2013

Authors:

R. de Lieto Vollaro, A. Vallati

Keywords:

Heat, Soil, Transfer

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References

[1] Devendra N. Singh, K. Devid. Generalized relationships for estimating soil thermal resistivity. Experimental Thermal and Fluid Science 22 (2000) 133-143.

DOI: 10.1016/s0894-1777(00)00020-0

Google Scholar

[2] De Vries, D. A. (1963). Thermal properties of soils. In W.R. van Wijk, Physics of plant Environment Engineers, Inc. New York.

Google Scholar

[3] Black, W. Z. et al. (Sept. 1982), Thermal stability of soils adjacent to underground transmission power cables, Final report of EPRI Research Project 7883.

Google Scholar

[4] A. D. Naidu, Devendra N. Singh, A generalized procedure for determing thermal resistivity of soils. International Journal of Thermal Sciences 43 (2004) 43-51.

DOI: 10.1016/s1290-0729(03)00103-0

Google Scholar

[5] CEI 20-21 (10/2007). Cavi elettrici. Calcolo della portata di corrente.

Google Scholar

[6] IEC 60287-3-1/2 Electric cables - Calculation of the current rating - Sections on operating conditions (1999).

Google Scholar

[7] IEC 287-2-1: 1994, Electric cables - Calculation of the current rating - Part 2: Thermal resistance - Section 1: Calculation of thermal resistance (1994) et others.

DOI: 10.3403/30273096

Google Scholar