Energy geo-structures are a promising application of shallow geothermal energy technologies utilising underground structures primarily build for stability to also convert them to ground heat exchangers and make thermal energy provision their secondary function. One type of energy geo-structures that has received little attention is energy soldier pile walls. This work adopts advanced numerical modelling approaches to investigate the thermal performance of these energy walls and important parameters affecting this performance including the soldier pile depth, spacing, pipe length and thermal load. The results indicate that both the soldier pile depth and spacing can impact the thermal performance with higher values being desirable. Non-linear/logarithmic performance trendlines have been identified. The scenario of activating less piles overall to increase their (thermal) spacing is also investigated, showing a decrease in the thermal performance but noting that in certain cases this decrease could be acceptable compared to the capital cost savings of activating less piles. The pipe configuration is found to result in relatively insignificant returns after utilising more than about 3 U-loops connected in series, suggesting the potential suitability of an easy to adopt rule-of-thumb for these structures.

能源地质结构是浅层地热能技术的一个有前景的应用，利用地下结构主要是为了稳定而建造，也可以将它们转化为地面热交换器，并使热能提供其次要功能。一种很少受到关注的能源地质结构是能源士兵桩墙。这项工作采用先进的数值建模方法来研究这些能量墙的热性能和影响这种性能的重要参数，包括士兵桩深度、间距、管道长度和热负荷。结果表明，士兵桩的深度和间距都会影响热性能，较高的值是可取的。已经确定了非线性/对数性能趋势线。还研究了整体激活较少桩以增加其（热）间距的情况，显示热性能下降，但注意到在某些情况下，与激活较少桩所节省的资本成本相比，这种下降是可以接受的。发现管道配置在使用超过约 3 个串联的 U 形环后导致相对微不足道的回报，这表明易于采用这些结构的经验法则的潜在适用性。