An earth air heat exchanger (EAHE) has advantages of its simplicity, easy implementation and low operating cost. The EAHE system is found less expensive for cooling and heating of buildings in severe climates. In this research paper, efforts have been made to analyze the accomplishment of a low-cost cooling system of outdoor air for the hot-dry & hot-humid climate. The effect of velocity, length and depth on the cooling potential of the system is studied at the inlet and outlet of the pipe. The novelty of this research is that enormous enhancement of the cooling potential has been observed in hot-humid climate than hot-dry climate, which is not available in previous studies. The results show that the maximum cooling potential in hot-dry climate is found 5643 kWh, 7375 kWh, 8939 kWh for the EAHE length of 15 m, 30 m and 45 m, respectively, corresponding to the velocity 2.5 m s −1 and depth 1.5 m. Whereas in a hot-humid climate, maximum cooling potential is achieved 13,373 kWh, 20,134 kWh and 24,080 kWh with a length of 15 m, 30 m and 45 m, respectively, for the given velocity and depth.

中文翻译：

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用混凝土管评价地气换热器的冷却潜力

地气换热器（EAHE）具有简单、易于实施和运行成本低的优点。EAHE 系统被发现用于在恶劣气候下冷却和加热建筑物的成本较低。在这篇研究论文中，已经努力分析了一种低成本的室外空气冷却系统在干热湿热气候下的实现。研究了管道入口和出口处的速度、长度和深度对系统冷却潜力的影响。这项研究的新颖之处在于，在湿热气候下观察到的冷却潜力比在以前的研究中没有的干热气候显着提高。结果表明，在 EAHE 长度为 15 m、30 m 和 45 m 时，干热气候下的最大制冷潜力分别为 5643 kWh、7375 kWh、8939 kWh，对应于速度 2.5 m s -1 和深度 1.5 m。而在炎热潮湿的气候中，对于给定的速度和深度，长度分别为 15 m、30 m 和 45 m 时，最大冷却潜力分别为 13,373 kWh、20,134 kWh 和 24,080 kWh。