Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/8746
Title: Ground temperature estimations using simplified analytical and semi-empirical approaches
Authors: Droulia, F.
Lykoudis, Spyros P.
Tsiros, I.
Alvertos, N.
Akylas, Evangelos 
Garofalakis, I.
Keywords: Ground temperature
Temperature distribution
Heat transfer
Heat conduction equation
Modeling
Energy conservation
Issue Date: Feb-2009
Publisher: Elsevier Science Limited
Source: Solar Energy, 2009, Volume 83, Issue 2, pages 211–219
Abstract: In this work, subsurface ground temperature profiles are estimated by exploiting two different approaches. In the first one, an analytical model is examined which, considering a quasi steady state system, implements the superposition of annual and daily sinusoidal fluctuations. In the second one, semi-empirical models are developed based on the general formula of the preceding, by replacing the steady state soil temperature with easily obtained daily average temperatures. Various subsets of soil temperature were used for model development, in order to explore the possibility of minimizing data requirements. Comparison of observational data with model results reveals that the observational patterns of hourly soil temperature are fairly well approximated by both by the analytical and the semi-empirical models. All models seem to capture the main characteristics of the annual course of soil temperature, with the results obtained from the semi-empirical models fluctuating in a much more realistic way than those of the analytical model. It is concluded that the proposed models may serve as useful tools for estimating and predicting soil temperatures to be used as practical reference in various environmental and energy applications.
URI: http://ktisis.cut.ac.cy/jspui/handle/10488/8746
ISSN: 0038-092X
DOI: 10.1016/j.solener.2008.07.013
Rights: Copyright © Elsevier Ltd
Appears in Collections:Άρθρα/Articles

Show full item record

SCOPUSTM   
Citations 10

26
checked on Mar 2, 2017

WEB OF SCIENCETM
Citations 10

21
checked on Mar 3, 2017

Page view(s) 50

12
checked on Apr 26, 2017

Google ScholarTM

Check

Altmetric


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