PVT panels

Developed by scientists in Malaysia, the new PVT collector uses reversed circular flow jet impingement (RCFJI) as a cooling mechanism. Its creators claim the panel may be used for off-grid applications and the generated thermal energy could be used for drying purposes.

Spanish scientists have proposed a new approach to combine photovoltaic-thermal panels with a reversible air-to-water heat pump in industrial buildings. The system is intended to provide space heating, cooling, domestic hot water, and electricity.

A research group from Ireland developed a PVT system consisting of a 170 W photovoltaic panel connected to a water tank placed at the backside of the PV module itself. The PVT module is able to considerably reduce the temperature of the PV unit while producing hot water for residential use.

An international research team has presented all possible system designs and applications for photovoltaic-thermal (PVT) technology. Their review includes conventional PV-T collectors, air-based systems, liquid-based installations, water-based collectors, refrigerant-based systems, heat-pipe-based technologies, dual air-water systems, building-integrated PVT arrays, and concentrated PVT collectors.

Sunmaxx says Fraunhofer ISE has confirmed the 80% efficiency of its new photovoltaic-thermal (PVT) module. It consists of 108 PERC half-cells in M10 format, with 400 W of electrical output and 1,200 W of thermal output.

UK researchers have proposed the use of photovoltaic-thermal energy for desalination purposes, via an approach based on synergistic electro-thermal coupling mechanisms. They have found that some system configurations could offer a lower levelized cost of desalinated water, in addition to higher efficiencies.

Naked Energy is commercializing a photovoltaic-thermal system to capture excess heat generated by PV modules for use in buildings. The VirtuPVT system, conceived for rooftop applications, includes an absorber plate, monocrystalline PERC solar cells, a borosilicate vacuum tube, an integrated reflector, and an integrated mounting system.

Indian scientists have developed a panel with an electrical efficiency of 13% and and thermal efficiency of 66.6 %. They built the system with a 100 W PV panel, a rectangular absorber, and a cooling technique based on a phase change material (PCM) that uses biochar derived from water hyacinth.

Malaysian researchers have developed a system that can absorb heat from PV modules and transmit it to a nanofluid, in order to transform it into thermal energy and use it for different applications. The panels have an overall efficiency of 89%.

Spanish PVT specialist Abora Solar has developed aH72SK modules, which combine solar panels with power conversion efficiencies of 17.8% and a thermal efficiency rating of around 70%. Its total area is 1.96 square meters.