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首页> 外文期刊>International journal of green energy >Three-Dimensional Analysis of the Thermal Interaction of Multiple Vertical Ground Heat Exchangers
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Three-Dimensional Analysis of the Thermal Interaction of Multiple Vertical Ground Heat Exchangers

机译：多个垂直地面换热器热相互作用的三维分析

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摘要

The use of ground heat pumps for heating and cooling buildings is receiving increasing attention due to their many benefits. But such systems have some challenges regarding the long-term use of groundwater for thermal purposes, including the sustainability of the systems. Interference between adjoining installations is being reported, raising issues of sustainability in terms of performance and equitable sharing of natural resources. To help address this issue, an investigation is reported here of the thermal interaction of vertical ground heat exchangers, in which two-and three-dimensional transient heat conduction is examined in the soil around vertical ground heat exchangers. A finite volume numerical solution is applied using FLUENT software. The research extends a previous study in which the analytical results of the line source theory are validated using two-dimensional numerical results, which inherently neglects axial heat transfer effects. The three-dimensional numerical study reported here accounts for axial heat transfer in the soil surrounding a borehole. It is demonstrated that a specified length exists for which the heat from the borehole wall is only conducted in the radial direction and the results of the two-dimensional heat conduction approach are valid.
机译：由于地热泵的许多优点，将其用于建筑物的加热和冷却受到越来越多的关注。但是，这样的系统在将地下水长期用于热源方面存在一些挑战，包括系统的可持续性。据报道，相邻设施之间存在干扰，这在性能和公平共享自然资源方面引发了可持续性问题。为了帮助解决这个问题，这里报道了对立式地面换热器的热相互作用的研究，其中在立式地面换热器周围的土壤中研究了二维和三维瞬态热传导。使用FLUENT软件可以应用有限体积数值解。该研究扩展了先前的研究，其中使用二维数值结果验证了线源理论的分析结果，而二维数值结果固有地忽略了轴向传热效应。此处报道的三维数值研究说明了井眼周围土壤中的轴向传热。结果表明，存在一定的长度，井壁的热量仅沿径向传导，并且二维导热方法的结果是有效的。

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