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Title:
 
Energy and Economic Analysis of Uniform and Non-Uniform Cooling Methods for PV Panels by Experimental Setup
 
Author(s):
 
H.M.S. Bahaidarah
 
Keywords:
 
Temperature, Photovoltaic Cells, Distribution, Cooling, Experiment, Jet Impingement
 
Topic:
 
OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Subtopic: PV Modules
Event: 31st European Photovoltaic Solar Energy Conference and Exhibition
Session: 5CV.2.48
 
Pages:
 
2603 - 2607
ISBN: 3-936338-39-6
Paper DOI: 10.4229/EUPVSEC20152015-5CV.2.48
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


Temperature non-uniformity on the surface of PV panel has a major affect on the global performance of PV systems and directly increases cell resistance which leads to a drop in the output of the system. In this paper, an experimental performance investigation has been carried out for non-uniform and uniform cooling techniques for PV panels subjected to the climate of Saudi Arabia. A uniform cooling technique for PV panels based on impingement cooling device is proposed to eliminate non-uniform heat transfer across the surface of the PV panel and its performance is compared with a conventional rectangular channel heat exchanger(RHX).The PV string’s overall performance was found to be sensitive with the thermal characteristics of the system. Measurements showed cell temperature as high as 83˚C for PV string without cooling. By employing impingement cooling, cell temperature was reduced to 37.1˚C whereas conventional heat exchanger reduced it to 47.4˚C. Conversion efficiency was enhanced by 98.4 % for impingement cooling and 60.6 % for heat exchanger cooling. Economic analysis revealed that levelized cost of energy (LCE) for uncooled PV was 1.95 (€/kWh) which was reduced to 1.57 (€/kWh) by non-uniform cooling and 1.49 (€/kWh) by uniform cooling. Results reveal that impingement cooling has not only increased the electrical power output and conversion efficiency but has reduced the cell temperature while keeping it uniform for each cell.