Design and heat transfer studies on solar water heating system

Water heating systems using solar energy is the predominant technology for exploitation of solar energy. Solar thermal conversion has higher conversion efficiency for domestic and industrial sectors. Flat-plate collector is the heart of solar water system. Compared to forced circulation, thermosyphon system has a higher impact in domestic sector due to its ease of operation, simplicity and less maintenance. Heat enhancement using passive techniques for natural as well as forced circulation is discussed here.