An evaluation of strategies to determine the inlet temperatures of Earth-air heat exchangers
DOI:
https://doi.org/10.5902/2179460X67002Keywords:
Analytical modeling, Air temperature, Earth-air heatexchangersAbstract
Earth-air heat exchangers (EAHE) represent a promising option to reduce heating or cooling loads of buildings. Basically, EAHE use underground ducts, where the air circulates to exchange heat with the ground. The analytical model proposed here considers, among other factors, the air temperature in the soil and also at the inlet and outlet of the ducts. In particular, this paper addresses two ways to determine the inlet air temperature, one provided by the Agrometeorological Station of Pelotas and the other based on ERA-Interim reanalysis data. Comparisons have shown efficiency between both ways.
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