A Numerical Simulation Method of the Ground Temperature for Multiple Ground Heat Exchangers

Jun Yong Sang; Dan Zhang; Fa Hui Wang

doi:10.4028/www.scientific.net/AMR.516-517.131

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 516-517A Numerical Simulation Method of the Ground...

A Numerical Simulation Method of the Ground Temperature for Multiple Ground Heat Exchangers

Abstract:

This paper presented the numerical simulations on Multiple Ground Heat Exchangers. The two coupled solutions were solved iteratively at each time step, and the simulated ground temperature was calibrated using a cylindrical source model by adjusting the grid spacing and adopting a load factor of 1.047 in the difference equation. With constant load applied to a single tube. The ground temperature profiles were not similar at different distances from the tube. The introduction of time schedule revealed a discrepancy between the load applied to the ground heat exchanger and that transferred from the tube to the ground, which was usually assumed to be the same when using analytical models. Hence, in designing a large Ground source heat pump system, the present method should give more precise results in dynamic simulation.

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Periodical:

Advanced Materials Research (Volumes 516-517)

Pages:

131-134

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.516-517.131

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Online since:

May 2012

Authors:

Jun Yong Sang, Dan Zhang, Fa Hui Wang

Keywords:

Ground Source Heat Pump (GSHP), Heat Exchange Law, Vertical U-Tube

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