Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9783
Title: A simplified method for optimal design of solar water heating systems based on life-cycle energy analysis
Authors: Yan, C
Wang, S 
Ma, Z
Shi, W
Keywords: Diminishing marginal utility
Energy mismatch
Life-cycle assessment
Optimal design
Solar water heating system
Issue Date: 2015
Publisher: Pergamon Press
Source: Renewable energy, 2015, v. 74, p. 271-278 How to cite?
Journal: Renewable energy 
Abstract: Significant energy mismatch exists in solar water heating systems as the time and amount of solar energy supply are usually different from that of hot water demand. Using a hot water storage tank can reduce or eliminate such mismatch in short term while it is difficult to avoid this mismatch in long term. In many optimal design and life-cycle analysis methods, the energy mismatch is ignored which causes the system performance to be overestimated and also misleads the optimal design of the system. This paper presents a simplified method for optimizing the key parameters of solar water heating systems based on life-cycle energy analysis. This optimal method considering the energy mismatch phenomenon can be implemented through two steps. In the first step, a simplified energy model based hourly energy matching different components of the system, is developed for determining the operating performance of system with different solar collector areas and water storage volumes. In the second step, the law of diminishing marginal utility is employed to determine the optimum size of the system. The optimum size is identified when the maximal life-cycle net energy saving is achieved. A case study on the application of the proposed method in a building is presented as well.
URI: http://hdl.handle.net/10397/9783
ISSN: 0960-1481
EISSN: 1879-0682
DOI: 10.1016/j.renene.2014.08.021
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

11
Last Week
0
Last month
2
Citations as of Aug 21, 2017

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
2
Citations as of Aug 22, 2017

Page view(s)

36
Last Week
3
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



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