Water-based cooling technique for photovoltaic-thermal systems
The novel technique consists of a PVC pipe with 20 holes that is placed on the top of a PV module and is able to maintain a constant discharge of water. It was demonstrated on an experimental photovoltaic-thermal PV system in which the PV panel was not integrated with the solar collector but connected to it via pipes.
Cooling PV panels with regasification of liquefied natural gas
Researchers in Israel have suggested the use of regasification of liquefied natural gas to reduce the operating temperature of PV modules in solar parks located at gas terminals. According to them, the feasibility of such a cooling solution could be strengthened by the fact that both the PV systems and the LNG regasification systems are, separately, mature, economical technologies.
Cooling PV modules with passive technique based on finned heat sink
A Pakistani research team has assessed the performance of a passive heat sink cooling technique in two different configurations: one using rectangular fins and one based on circular fins. The rectangular configuration was the best in terms of heat rejection. Modules mounted with this solution had a 6 C lower temperature than modules without cooling systems.
