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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
A STUDY OF SOME PHYSICAL PARAMETERS OF EARTH-AIR HEATEXCHANGERS
Submission Author:
Lucas Lucena , RS
Co-Authors:
Patrick Garcia Machado, Lucas Lucena, Ruth Brum, Daniela Buske
Presenter: Patrick Garcia Machado
doi://10.26678/ABCM.ENCIT2020.CIT20-0219
Abstract
It is a constant concern of science and several governments across the planet to find ways to reduce theconsumption of electricity and also to produce energy from renewable sources. Earth-Air Heat Exchangers (EAHE)are an option for indoor heating and cooling devices that use the thermal inertia property of the soil to ensure desiredthermal comfort. In this sense, several works were developed to present the modeling of EAHE with a simple duct vianumerical methods. Here, are presented the study of some physical parameters, such as the dimensions of the ducts,and how to optimize the performance of an EAHE from the variation of these parameters. In addition, a model for thetransient modeling of temperature inside the ducts is presented. The models are developed analytically, delivering resultsin accordance with the experimental data. Finally, through Constructal Theory, the result for the efficient design of anEAHE is presented.
Keywords
Earth-Air Heat Exchangers (EAHE), Constructal Theory, thermal comfort, Renewable Energy Devices
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