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Information Journal Paper

Title

ON THE SIZING OF A FLAT-PANEL GROUND HEAT EXCHANGER

Pages

  55-63

Abstract

 Ground-source heat pumps are a reliable technology and may represent an efficient and cost-effective option for space heating and cooling, when the investment for ground heat exchangers is reasonable. New advanced ground exchangers have been recently proposed, showing high performances also in shallow ground; their shape has not yet been investigated in literature. In the present study, an analytical solution based on the line source method is applied for sizing a novel shape. This so-called FLAT-PANEL shape is assumed to be an equivalent slinky-coil having the same heat transfer surface per unit of trench length. As overall benchmarks, two other configurations of straight pipes disposed vertically and horizontally have been sized; all devices are supposed to work in a four lined geothermal field. The building heating requirement has been evaluated assuming a simplified lumped system and three different climate zones, defined by 2.000, 2.500 and 3.000 degree days. Then, a 2D finite-element model has been implemented to solve the transient heat conduction problem in the ground. The results of the analytical formulation and numerical simulations have been compared in terms of average temperature at the wall surface of the heat exchanger. The design minimum temperature considered by the ANALYTICAL METHOD in sizing the two straight pipe configurations and the FLAT-PANEL is accurately reproduced by the NUMERICAL MODEL. Therefore, the slinky-coil equivalent approach followed in the ANALYTICAL METHOD for sizing the FLAT-PANEL seems to be a reliable and suitable approximation.

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    Cite

    APA: Copy

    BORTOLONI, MARCO, & BOTTARELLI, MICHELE. (2015). ON THE SIZING OF A FLAT-PANEL GROUND HEAT EXCHANGER. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, 6(1), 55-63. SID. https://sid.ir/paper/327125/en

    Vancouver: Copy

    BORTOLONI MARCO, BOTTARELLI MICHELE. ON THE SIZING OF A FLAT-PANEL GROUND HEAT EXCHANGER. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING[Internet]. 2015;6(1):55-63. Available from: https://sid.ir/paper/327125/en

    IEEE: Copy

    MARCO BORTOLONI, and MICHELE BOTTARELLI, “ON THE SIZING OF A FLAT-PANEL GROUND HEAT EXCHANGER,” INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, vol. 6, no. 1, pp. 55–63, 2015, [Online]. Available: https://sid.ir/paper/327125/en

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