Numerical study of earth-to-air heat exchanger for three different climates
Por:
Ramírez-Dávila L., Xamán J., Arce J., Álvarez G., Hernández-Pérez I.
Publicada:
1 jun 2014
Resumen:
A numerical study was conducted for prediction the thermal behavior of an Earth-to-Air Heat Exchanger (EAHE) for three cities in Mexico. The climate conditions correspond to an extreme heat in summer and low temperature in winter (Cd. Juarez, Chihuahua), mild weather (Mexico city) and hot weather (Merida, Yucatan). A Computational Fluid Dynamics code based on the Finite Volume Method has been developed in order to model the EAHE. Simulations have been conducted for sand, silt and clay soil textures for the cities of Cd. Juarez, Mexico city and Merida, respectively. Also, for different Reynolds numbers, Re = 100, 500, 1000, 1500 through one year. For Cd. Juarez, and Mexico city, simulation results reveal that the thermal performance of the EAHE is better in summer than in winter, decreasing the air temperature in an average of 6.6 and 3.2 degrees C for summer and increasing it in 2.1 and 2.7 degrees C for winter, respectively. By contrast for Merida, EAHE had its best thermal performanc
Filiaciones:
Centro Nacional de Investigación y Desarrollo Tecnológico, CENIDET-DGEST-SEP, Prol. Av. Palmira S/N, Col. Palmira, Cuernavaca, Morelos CP 62490, Mexico
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