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- W4323266506 abstract "Excess solar thermal energy is available, while in winter, when thermal energy is needed for heating systems, itsquantity is usually not sufficient. There are different options to cope with the seasonal offset of thermal energy supply and demand.One of these options is borehole thermal energy storages (BTES). Borehole thermal energy storages coupled with ground source heatpumps have been widely developed and researched. The major disadvantage of (BTES) is the initial capital cost required to drill theboreholes. Geothermal energy piles were developed to help offset the high initial cost of these systems. This study investigatesthermal performance of vertical ground heat exchangers with constant inlet water temperatures and deferent borehole depths. Theperformances of three models of U-tube with depth of 100m, 60m, and 30m are evaluated by numerical method using a CFD 3Dsimulation. The simulation results show that heat transfer rates decrease in the heating mode for 100m depth, and show that the bestborehole depth regarding to heat transfer rate efficiency is 60m depth borehole. However for heat storage capacity the model of 100mdepth is the best. The results show that increasing the depth of borehole heat exchangers lower the heat exchange efficiency with theground. By comparing with 100 m depth, the heat transfer rates per unit borehole depth lower of 3.1% in 60 m depth. According to allresults, it is highly recommended to construct medium depth around 60 m depth of borehole with U-shaped pipe configuration, due tohigher efficiency in heat transfer rate." @default.
- W4323266506 created "2023-03-06" @default.
- W4323266506 creator A5028143836 @default.
- W4323266506 date "2023-03-04" @default.
- W4323266506 modified "2023-10-18" @default.
- W4323266506 title "The Effect of Borehole Heat Exchanger Depth on Heat Transfer Rate: A Numerical Investigation Using a CFD 3D Simulation" @default.
- W4323266506 doi "https://doi.org/10.31219/osf.io/2nw9v" @default.
- W4323266506 hasPublicationYear "2023" @default.
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