Frontiers in Energy
>> 2008,
Volume 2,
Issue 3
doi:
10.1007/s11708-008-0053-y
Optimization for operating modes based on simulation
of seasonal underground thermal energy storage
| School of Mechanical Engineering, Tianjin University; |
Available online: 2008-09-05
Next
Previous
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.
京公网安备 11010502051620号
