Techno-Economic Analysis of Glazed, Unglazed and Evacuated Tube Solar Water Heaters

Syed Ali Raza, Syed Sulman Ahmad, Tahir Abdul Hussain Ratlamwala, Ghulam Hussain and Mohammed Alkahtani
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Syed Ali Raza: Department of Engineering Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan
Syed Sulman Ahmad: Department of Engineering Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan
Tahir Abdul Hussain Ratlamwala: Department of Engineering Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan
Ghulam Hussain: Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology, Topi 23640, Pakistan
Mohammed Alkahtani: Department of Industrial Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia

Energies, 2020, vol. 13, issue 23, 1-18

Abstract: In the residential sector, a great part of the electricity goes into heating water by electric water heaters, which results in high CO 2 emissions as well as an unprecedented increase in electricity demand leading to an energy crisis. This study offers solar water heaters as a more economical and efficient replacement for electric water heaters. The present study is aimed at investigating the potential for solar water heaters in the subcontinent, especially in India. A feasibility analysis is performed for seven cities in the subcontinent, namely Mumbai, New Delhi, Kolkata, Assam, Gujrat and Madhya Pradesh. Simulated results are based on a solar fraction, equity payback, multiple collectors (one, two or three), horizontal and tilted, type of collector (evacuated tube, glazed and unglazed), electricity saved and greenhouse gas (GHG) emission reduction. The collector’s area is made such that it should receive at least 50% of the solar fraction. The range of payback period varies from five to 15 years. The results show Gujrat being the most ideal site for solar water heaters.

Keywords: evacuated tube; glazed; unglazed; subcontinent; solar water heater; feasibility (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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