Emiliano Bellini
Coupling photovoltaics with thermoelectric cooling
An international research team has investigated how solar could be combined with thermoelectric coolers (TECs), which are small solid-state heat pumps used either for heating or for cooling. A system was built with six solar panels, an air duct system, four batteries, a charge controller, TECs, an inverter, heat sinks, a test chamber, and condenser fans.
Sharp introduces 410 W half-cut panel with 21% efficiency
The panel features 108 half-cells based on M10 wafers and a 10-busbar design. Its operating temperature coefficient is -0.341% per degree Celsius and its power tolerance reaches up to 5%.
New hybrid inverter for rooftop PV arrays from SMA
SMA’s new hybrid inverter reaches a maximum efficiency of 98.2% and a maximum European efficiency of 97.5%. It is compatible with DC-coupled high-voltage lithium-ion batteries from leading suppliers, according to the manufacturer.
Best fire safety practices for rooftop PV systems
Compiled by an international research group, the best practices were collected from all available guidelines published by national agencies, regulatory bodies, and trade associations.
TOPCon vs PERC
TOPCon solar cells are on their way to fully compete with PERC solar products, according to recent research from Germany’s Fraunhofer ISE. Efficiency gains for the TOPCon concept, however, are necessary to help it capture more market share, as production costs remain higher than those for PERC tech. A series of cost-driven strategies to make TOPCon modules advance were outlined in the study.
Spraying water system for solar module cooling
A British-Indian research group has developed an active cooling technique that is claimed to improve a PV system’s yield by around 0.5%. The system could be used in residential solar arrays and the water heated by the PV modules may be fed into a solar water heating system.
Japanese consortium builds lithium-air battery with energy density of 500 Wh/kg
A Japanese group has developed a storage system with potential applications in residential storage, electric vehicles, drones and Internet-of-Things devices.
Panasonic unveils 410 W solar panel with 22.2% efficiency
The new heterojunction module series is compatible with Panasonic’s Evervolt battery and has a power output ranging from 400 to 410 W. It also features a temperature coefficient of -0.26% per degree Celsius.
Chinese fish pond hosts 550 MW solar farm
Built by the Chint Group, the project is currently the largest in China combining PV power generation and fish farming. It is located in Wenzhou, a city with a subtropical maritime monsoon climate in China’s Zhejiang province.
Residential building fully reliant on hydrogen for space heating, hot water
The campus of the Delft University of Technology (TU Delft) in the Netherlands is currently hosting a retrofitted existing building provided with heating by an H2 heating boiler in the attic. The boiler is linked to an underground hydrogen system.
