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Journal of Energy
Volume 2014 (2014), Article ID 859286, 15 pages
http://dx.doi.org/10.1155/2014/859286
Review Article

Study on Calculation Models of Earth-Air Heat Exchanger Systems

Energy Centre, Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal 462051, India

Received 12 May 2014; Accepted 11 July 2014; Published 4 September 2014

Academic Editor: Mohamed Benghanem

Copyright © 2014 Trilok Singh Bisoniya et al. 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.

Abstract

Modeling is very useful tool in order to predict the effect of the operating parameters like pipe length, radius, depth of burial and air flow rate on the thermal performance and heating/cooling capacity of earth-air heat exchanger (EAHE) systems. Till date many researchers have carried out a number of studies on calculation models for earth-air heat exchanger systems. The analysis of EAHE systems started with the development of one-dimensional models. The two-dimensional models came into practice during the 1990s and were replaced by three-dimensional models in recent years. Latest models are dynamic and technically more advanced which can provide room for all types of grid geometry to produce detailed thermal analysis of EAHE systems. This paper reviews on calculation models of EAHE systems as of the end of March, 2014.