Table of Contents
ISRN Renewable Energy
Volume 2014 (2014), Article ID 180618, 9 pages
http://dx.doi.org/10.1155/2014/180618
Research Article

Energy and Exergy Analysis of a Plane Reflector Integrated Photovoltaic-Thermal Water Heating System

Department of Mechanical Engineering, National Institute of Technology Calicut, NIT Campus (PO), Calicut 673601, India

Received 12 February 2014; Accepted 20 March 2014; Published 14 April 2014

Academic Editors: A. Al-Salaymeh, O. Ozgener, and H. Tanaka

Copyright © 2014 Prem Sagar Naik and Arun Palatel. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A photovoltaic-thermal water heating system is a hybrid energy conversion device transforming the incident solar radiation to yield electrical energy and thermal energy. Plane reflectors are found to be a convenient option for enhancing the solar radiation incident on the collector plane. The present work investigates the performance of a photovoltaic-thermal water heater integrated with a plane reflector mounted on the top edge of the collector for the tropical climate of Calicut (11.25°N, 75.78°E). Performance testing of the system has been carried out for the winter season of the location. The variations in thermal and electrical output are studied for various inclination angles of the reflector. The system performance is evaluated on the basis of system energy efficiency and exergetic efficiency. It is observed that there is a significant enhancement in the thermal and electrical output of the system with the integration of the reflector as compared to the system without the reflector. For the present system, the reflector tilt angle in the range of 85–100° has been found to be suitable in terms of enhanced system output and exergetic efficiency for the winter conditions of Calicut.