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Design and Numerical Analysis of Enhanced Cooling Techniques for a High Concentration Photovoltaic (HCPV) System
M. Theristis, N. Sarmah, T.K. Mallick, T.S. O’Donovan
Multijunction Solar Cell, Thermal Performance, Concentrator Cells, Concentrating Photovoltaics, Thermal Modeling
Material Studies, New Concepts and Ultra-High Efficiency
Subtopic: Terrestrial Concentrator Systems
Event: 27th European Photovoltaic Solar Energy Conference and Exhibition
Session: 1AV.3.35
260 - 265
ISBN: 3-936338-28-0
Paper DOI: 10.4229/27thEUPVSEC2012-1AV.3.35
0,00 EUR
Document(s): paper


A thermal model has been developed to predict the heat output of a PV cell, in order to examine the most efficient and cost effective cooling system for a 500x concentrating PV cell. The worst case scenario (i.e. zero forced convection from a flat surface) was selected in order to identify and measure the scale of the challenge. Different geometries and materials of heat sinks were then designed and tested for passively cooling purposes of the High Concentration Photovoltaic system. It is shown that passive cooling of a CPV system with CR of 500x is insufficient to maintain the cells below 80°C, especially for high ambient temperatures. Numerical analysis and simulations in MatLAB and COMSOL Multiphysics report on the level of cell’s surface temperature and convective heat transfer coefficient that is required for the PV cell to operate below safe temperature limits.