Parametric study on thermal performance of earth-to-air heat exchanger used for cooling of buildings

Mohammed Benhammou and Belkacem Draoui

Renewable and Sustainable Energy Reviews, 2015, vol. 44, issue C, 348-355

Abstract: A transient one-dimensional model was developed for studying the thermal performance of earth-to-air heat exchangers (EAHE) for summer cooling under the Algerian Sahara. The effect of extremities was also taken into account. The model validation against both theoretical and experimental data of other researchers showed a good agreement. In addition, a detailed sensitive study was carried out in order to investigate the influence of geometrical and dynamical parameters on the thermal performance of EAHE. Results showed that the air outlet temperature decreases with increasing of pipe length but it increases with increasing of pipe cross section and air velocity. However, the daily mean efficiency increases when the length of pipe increases but it decreases when the cross section area of pipe or air velocity increases. It is also observed that the coefficient of performance drops quickly with increasing of air velocity. Considering as reference the thermal performance of EAHE under steady state conditions, the investigation of Derating Factor reveals that the thermal performance of EAHE in transient conditions is more influenced by the variation of operating duration, pipe diameter and air velocity.

Keywords: Soil; Heat exchanger; Buried pipe; Fresh air; Efficiency; Coefficient of performance (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (19)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S136403211401082X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:rensus:v:44:y:2015:i:c:p:348-355

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/bibliographic
http://www.elsevier. ... 600126/bibliographic

DOI: 10.1016/j.rser.2014.12.030

Access Statistics for this article

Renewable and Sustainable Energy Reviews is currently edited by L. Kazmerski

More articles in Renewable and Sustainable Energy Reviews from Elsevier
Bibliographic data for series maintained by Catherine Liu ().