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Geo-climatic applicability of earth-to-air heat exchangers in North America

机译：北美地对空热交换器的地质气候适用性

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摘要

Earth-to-air heat exchangers (EAHX) systems have the potential to provide low energy heating and cooling in line with current appeals for energy efficiency and reduction. The lack of a geo-climatic description of EAHX applicability in North America, useful for pre-design decision making, motivated the creation of the Eahx geo-CLImatic Potential Script, or "ECLIPSe", capable of describing EAHX applicability by comparing the cooling and heating degree hours prior to, and after being conditioned by a virtual system. The applicability was derived for varying values of system effectiveness and depth as well as soil surface conditions and thermal properties. Improved system effectiveness enhanced system applicability, particularly for those climates with either a dominant heating or cooling need, while increased depths appear to have diminishing returns past 2.5-3 m. EAHX systems are less sensitive to soil thermal properties and surface conditions. The results indicate EAHX systems are best suited for temperate climates where there is a balance in heating and cooling needs relative to climates which are dominated by either need. The approach can be further utilized to provide a preliminary regional assessment of EAHX applicability for different areas and future climates useful for designers looking to implement low energy technology. (C) 2019 Elsevier B.V. All rights reserved.
机译：地对空换热器（EAHX）系统具有提供低能耗加热和冷却的潜力，符合当前对提高能源效率和降低能耗的吸引力。北美缺乏对EAHX适用性的地理气候描述，这对设计前的决策很有用，这促使创建了Eahx地理气候潜力脚本或“ ECLIPSe”，该脚本能够通过比较冷却和排放来描述EAHX适用性。在虚拟系统进行调节之前和之后的小时数。适用性是针对系统有效性和深度以及土壤表面条件和热特性的不同值得出的。改进的系统有效性增强了系统的适用性，尤其是对于那些主要供暖或制冷需求的气候，而增加的深度似乎使超过2.5-3 m的回波减小。 EAHX系统对土壤的热特性和地表条件较不敏感。结果表明，EAHX系统最适合于温热气候，在该温度下，供热和制冷需求相对于以这两种需求为主的气候要平衡。该方法可以进一步用于为不同地区和未来气候提供EAHX适用性的初步区域评估，这对寻求实施低能耗技术的设计人员很有用。 （C）2019 Elsevier B.V.保留所有权利。

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