Controlling water-to-water CO2 heat pump for optimal coefficient of performance
Scientists have designed a novel control approach for water-to-water heat pumps that use carbon dioxide. They relied on a virtual heat pump for their tests. The coefficient of performance (COE) improved by up to 14.6%.
Scientists develop thermal model for floating solar with 15.45% efficiency
Scientists have developed a multi-physics thermal model for panels with a natural convection cooling loop and tested it against experimental data. They have also experimented with varying the coolant channel thickness and different coolants. The highest measured electrical efficiency reached 15.45%.
World’s highest solar plant by elevation goes online in China
China Huadian and PowerChina have completed the world’s highest solar plant by altitude, a 100 MW facility in Tibet, paired with 20 MW/80 MWh of battery storage.
Midea Hiconics releases new residential all-in-one battery storage systems
The Chinese company says its three-phase Hienergy series can pair with PV arrays of up to 8.5 kW, with battery storage reaching up to 40.8 kWh.
Testing rigid connectors in floating photovoltaics
New research from China shows that using rigid connectors instead of polyester ropes in floating photovoltaic arrays may help reduce the relative motion of floats and simplify the layout of the connection system.
Improving solar cell efficiency with upconversion nanoparticles
An international research group has developed a light upconversion system that can reportedly improve crystalline silicon solar cell efficiency by up to 0.87%. The technology consists of multilayer nanoparticles that act as near-infrared absorbers across different spectral ranges.
Mibet launches 51 KW offshore PV demonstrator
Mibet, a Chinese PV mounting system supplier, says it has started operating a 51 kW offshore PV pilot project in Xiamen, southeastern China. The 563.286 sqm system, which includes 112 panels, accommodates framed and double-glass PV modules with 60 and 72 cells.
GoodWe releases new C&I string inverter series
GoodWe has unveiled a new commercial and industrial (C&I) string inverter series, featuring models with output power ratings of 100 kW, 110 kW, and 125 kW, offering up to 10 maximum power point trackers (MPPT) and 21A DC input per string.
China issues new rules to support peer-to-peer energy trading
China’s National Energy Administration (NEA) has introduced a new set of measures to support peer-to-peer energy trading. The new initiatives are expected to remove barriers for the further development of distributed PV projects.
DAS Solar introduces flexible mounting system
DAS Solar has unveiled a new, flexible PV mounting system. The company claims the system, now installed over a fishery in China, has already withstood a particularly strong typhoon, demonstrating its reliability.
