University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Behaviour of a salinity gradient solar pond during two years and the impact of zonal thickness variation on its performance

Sayer, Asaad, Monjezi, AA and Campbell, Alasdair (2017) Behaviour of a salinity gradient solar pond during two years and the impact of zonal thickness variation on its performance Applied Thermal Engineering, 130. pp. 1191-1198.

[img] Text
1-s2.0-S1359431117308591-main.pdf - Accepted version Manuscript
Restricted to Repository staff only until 23 November 2018.

Download (840kB)

Abstract

The interest in solar energy has increased substantially as a consequence of greenhouse gas emissions that result from the combustion of fossil fuels in power generation processes. Solar energy is likely to be the energy of the future and solar ponds, in particular, salinity gradient solar ponds (SGSP), facilitate simple and cost-effective thermal energy collection and storage. In this study; the influence of varying the thicknesses of the zones present in a salinity gradient solar pond on the temperatures of the upper convective zone (UCZ) and the lower convective zone (LCZ) is investigated. The study finds that thickness variation of the zones within the pond has a considerable impact on the temperature of the LCZ while it has a small effect on the temperature of the UCZ. The optimal thicknesses of the UCZ and the non-convective zone (NCZ) have been found to be 0.2 and 2 m respectively. The results also show that the type of application plays a substantial role in determining the depth of the LCZ, and that temperature of this zone varies with the rate of heat extraction. A period of no heat extraction is required to allow the pond to warm up and the length of this period depends on the depth of the LCZ, the type of application coupled with the pond, and the rate of heat extraction. It was found that the SGSP could be deeper with less surface area, and still suitable for applications that require low-grade heat. These findings could form the basis of future studies regarding the performance and financial viability of the overall depth of SGSPs.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Sayer, Asaada.h.sayer@surrey.ac.ukUNSPECIFIED
Monjezi, AAUNSPECIFIEDUNSPECIFIED
Campbell, Alasdaira.n.campbell@surrey.ac.ukUNSPECIFIED
Date : 23 November 2017
Identification Number : 10.1016/j.applthermaleng.2017.11.116
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Depositing User : Melanie Hughes
Date Deposited : 30 Nov 2017 14:03
Last Modified : 30 Nov 2017 14:03
URI: http://epubs.surrey.ac.uk/id/eprint/845078

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800