The journal article was written to provide an overview of solar water heating (SWH) technology which include the basic principle and theory of thermodynamics, applications of these principles and theories, effectiveness of SWH in providing energy, market potentials for
SWH technology and potential research questions to improve existing technology. Furthermore, the article also outlines the importance of SWH as one of the economical renewable energy scenarios.
The introduction section of this article presents the facts of fossil fuel as the primary source (80%-90% of energy usage) to date, and clearly discusses the potential setbacks and effects of fossil
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