Photovoltaic/thermal combi-panels: A review

Since the 1970s a lot of countries has concentrated their attention on photovoltaic panels. A lot of studies and research have been made. Many innovative systems and products have been put forward and their quality evaluated by academics and professionals. A range of theoretical models have been introduced and their appropriateness validated by experimental data. Important design parameters are identified. This article gives a review about photovoltaic/thermal combi-panels and their classification.