Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/6746
Title: Single and double u-tube ground heat exchangers in multiple-layer substrates
Authors: Florides, Georgios A. 
Pouloupatis, Panayiotis 
Christodoulides, Paul 
Keywords: Heat pumps
Forecasting
Heat exchangers
Issue Date: 2013
Publisher: Elsevier
Source: Applied Energy, 2013, Volume 102, Pages 364-373
Abstract: The efficiency of ground-source heat pumps depends on the correct sizing of the associated ground heat exchangers (GHEs). Multiple ground layers with regard to GHE and the presence of more than one loops in each borehole (multiple U-tubes) are sparsely raised in the literature. Therefore the accurate prediction of the performance of the GHE under these conditions is of fundamental importance. A newly developed and validated model is applied to a multiple layer ground regime with different properties and the effect of the layer sequence on the outlet temperature is examined. The model is also modified to allow the study of a double U-tube GHE in a single borehole and the assessment of its efficiency with regard to its building cost. Various configurations are then compared to show that an in-series double GHE is the most efficient. The numerical model developed for energy flows and temperature changes in and around a borehole, when a fluid circulates through single and double U-tubes, is validated upon comparing its results with established experimental results for a single GHE. This model is an improvement of a previous one, based on the time-dependent convection-diffusion equation.
URI: http://ktisis.cut.ac.cy/handle/10488/6746
ISSN: 03062619
DOI: 10.1016/j.apenergy.2012.07.035
Rights: © 2012 Elsevier Ltd.
Appears in Collections:Άρθρα/Articles

Show full item record

SCOPUSTM   
Citations 10

22
checked on Jun 24, 2017

WEB OF SCIENCETM
Citations 10

20
checked on Aug 2, 2017

Page view(s)

20
Last Week
0
Last month
2
checked on Aug 23, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.