Analysis of Scientific Publications on Solar Water Heating Collectors

Abstract

This study presents a bibliometric analysis of research on flat-plate solar water heater collectors based on the Scopus database from 2000 to 2025. A total of 937 publications were identified, with the majority being journal articles (65.1%) and conference papers (28.1%). The research predominantly falls under Energy (35.5%) and Engineering (29.1%), highlighting the technological and scientific interest in this field. The international collaboration network indicates that India and the UK (5 studies), as well as Iran and Malaysia (3 studies), have the most active partnerships. India, China, the USA, Iraq, and Saudi Arabia also contribute significantly to global research cooperation. These findings emphasize the growing attention toward solar water heating technologies and the strong collaboration between researchers in leading countries. This study provides insights into publication trends and interdisciplinary contributions, offering a foundation for future research directions in sustainable energy applications.