Cooling down solar modules with cotton wicks immersed in water
The novel technique consists of attaching cotton wicks immersed in the water (CWIWs) to the backside photovoltaic module. The water is supplied to cotton wicks from top to bottom by gravity which the scientists said helps the effective absorption of cotton and reduces water consumption.
Update: New tech to produce hydrogen from tap water
A Spanish scientist has developed a system that reportedly produces hydrogen on-site without expensive electrolysis. The prototype utilises a water tank that is initially filled with water, ferrosilicon, and sodium hydroxide.
Construction begins on world’s largest integrated green hydrogen, ammonia plant
In other news, German energy company Uniper said it will test a new salt cavern built for hydrogen storage, while Serbia and Hungary signed a memorandum of understanding to collaborate on renewable hydrogen.
Start-up unveils solar thermal panel for large-scale applications
The panel has an absorption area of 1.96 m2 and a weight of 27 kg per square metre. According to the manufacturer – Swiss start-up TVP Solar – it may be a real booster for thermal output, by combining it with photovoltaics and heat pumps to provide enhanced output per square meter, in particular for low-temperature applications such as district heating.
Hornsdale big battery begins providing inertia grid services at scale in world first
South Australia’s 150 MW / 193.5 Hornsdale Power Reserve, more commonly known as the Tesla Big Battery, will now provide inertia services to Australia’s National Electricity Market after securing approval from AEMO. Neoen says it is the first big battery in the world to deliver the service at such a scale.
Vehicle-integrated photovoltaics for low-speed electric vehicles
Canadian startup Capsolar claims its flexible solar modules can be adapted to any type of low-speed electric vehicle with no extra modification and custom work. The panels have an efficiency of 21.3% and rely on 24%-efficient solar cells provided by US manufacturer SunPower.
New kind of black silicon shows improved light-trapping properties
Scientists in Russia have developed a new wide-band optical absorber called ‘black silicide’ which they claim is more adjusted to match AM-1.5 solar spectrum with theoretically higher photogenerated current density. It could be used for tandem operation in photovoltaic devices.
Portable flexible PV systems for off-grid, residential applications
US startup New Use Energy Solutions has launched a new line of portable PV systems built with a module technology relying on Sunpower’s solar cells. The modules are assembled in the system via a custom vinyl tarp.
JA Solar test reveals n-type panels outperform p-type counterparts
Chinese manufacturer JA Solar said that tests have shown that n-type modules have a 3.9% higher power yield than their p-type counterparts. Germany-headquartered technical service provider TÜV Nord has confirmed the results.
Small cracks have negligible effect on solar cell performance
A team of researchers from the United Kingdom have found that crack percentages of up to 11% have a very limited impact on solar cell performance. They also ascertained that hotspots are likely to arise when the crack percentage is in the range of 11 to 34%.
