Experimental studies on solar flat plate collector with internally grooved tubes using aqueous ethylene glycol


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Abstract

In order to cope up with the increase in energy demand and decline in fossil fuels, it has become imperative to use renewable resources efficiently. Among these renewable resources, solar thermal energy is abundant in nature. Solar water heating systems are one of the most important applications of solar thermal energy. Providing internal fins to absorber tube is the technique to improve heat transfer augmentation. Hence in the present study, experiments were performed on solar flat plate collector with different cross section of absorber tubes (plain tube and internally grooved tubes with different helix angles) and by varying the mass flow rates of the working fluids. This study reports the experimental results of flat plate collector, where the working fluid is water and aqueous ethylene glycol (50 : 50). Temperature profile of grooved absorber tube will be compared with plain tube. Since conversion efficiency of solar devices is low, the present study mainly focuses on improving the efficiency of solar flat plate collector.

About the authors

Vidhi Upadhyay

School of Mechanical Engineering

Author for correspondence.
Email: vidhi95upadhyay@gmail.com
India, Vellore

Rashmi

School of Mechanical Engineering

Email: vidhi95upadhyay@gmail.com
India, Vellore

P. Himanshu Khadloya

School of Mechanical Engineering

Email: vidhi95upadhyay@gmail.com
India, Vellore

Y. Raja Sekhar

School of Mechanical Engineering

Email: vidhi95upadhyay@gmail.com
India, Vellore

A. D Sai Anoop Reddy

La Trobe University

Email: vidhi95upadhyay@gmail.com
Australia, Melbourne

Bharath Reddy

University of South Florida

Email: vidhi95upadhyay@gmail.com
United States, Tampa

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