Frontiers in Energy >

2008 , Vol. 2 >Issue 3: 298 - 301

DOI: https://doi.org/10.1007/s11708-008-0053-y

Optimization for operating modes based on simulation of seasonal underground thermal energy storage

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  • School of Mechanical Engineering, Tianjin University;

Published date: 05 Sep 2008

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Abstract

A simulation was performed, which concerned the feasibility of seasonal underground thermal energy storage (UTES) in Tianjin, China. The investigated system consisted of 8 boreholes. In summer, residual solar thermal energy was emitted into the soil surrounding the borehole heat exchangers through which the stored energy was extracted in winter with a ground coupled heat pump (GCHP) to provide a proper heating temperature. A simulation study was performed to study the influence of system operation modes on thermal recovery based on the experimental data of a GCHP system, local meteorological conditions and soil properties in Tianjin. The results indicate a thermal recovery ratio of less than 67% and different temperature distributions under three modes. Finally, an operation mode was suggested based on both lower loss and better thermal recovery in the UTES.

Cite this article

ZHAO Jun, CHEN Yan, LI Xinguo . Optimization for operating modes based on simulation of seasonal underground thermal energy storage[J]. Frontiers in Energy, 2008 , 2(3) : 298 -301 . DOI: 10.1007/s11708-008-0053-y

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