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Energies 2018, 11(6), 1542; https://doi.org/10.3390/en11061542

Heat and Mass Transfer Behavior Prediction and Thermal Performance Analysis of Earth-to-Air Heat Exchanger by Finite Volume Method

1
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
School of Engineering, University of Hull, Hull HU6 7RX, UK
*
Author to whom correspondence should be addressed.
Received: 8 March 2018 / Revised: 31 March 2018 / Accepted: 2 April 2018 / Published: 13 June 2018
(This article belongs to the Special Issue Building Renewable Energy and Thermal Energy Storage System 2018)
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Abstract

A comprehensive numerical study on coupled heat and mass transfer in an earth-to-air heat exchanger (EAHE) is conducted by self-complied program based on the finite volume method. The soil thermal and moisture coupled characteristics in the vicinity of the pipe and the thermal performance of the EAHE are evaluated by a two-dimensional simulation model. The model of the EAHE is verified by the experimental data, which achieved a good agreement with each other. The numerical results show that there is an obvious moisture peak in the radial direction, and the peak position radially moves away from the wall of the pipe over time. It is also found that the thermal performance of the heat and mass transfer model in soil is better than the pure heat conduction model. View Full-Text
Keywords: earth-to-air heat exchanger; coupled heat and mass transfer; numerical simulation; energy conservation earth-to-air heat exchanger; coupled heat and mass transfer; numerical simulation; energy conservation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Liu, Q.; Du, Z.; Fan, Y. Heat and Mass Transfer Behavior Prediction and Thermal Performance Analysis of Earth-to-Air Heat Exchanger by Finite Volume Method. Energies 2018, 11, 1542.

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