Energy Storage

Scientists from South Korea have developed a heat pump optimization technique that controls the secondary refrigerant flow. The proposed technology offers the advantage of bypassing the need to control the compressor of the heat pump, which is a function that is commonly not available in commercial devices.

Stryten Energy is planning to begin commercializing its vanadium redox flow batteries in January 2025. Meanwhile it has deployed a 20 kW/120 kWh pilot-sized version of the storage system at a facility operated by Snapping Shoals EMC, an electricity cooperative in Georgia, United States.

Italy hit 3,045 MW/4,893 MWh of distributed storage capacity in the six months to the end of June. The segment continues to grow, led by the regions of Lombardy and Veneto.

A Polish research team has developed a micro compressed air storage system that could be used in residential and industrial buildings where additional low-temperature waste heat is available. The system is claimed to have optimal control of the compressed air expansion process performance via pulse width modulation (PWM).

Tesla has launched the Powerwall 3 battery with an energy capacity of 13.5 kWh and continuous on-grid power of 11.5 kW, featuring dimensions of 110 cm x 61 cm x 19.3 cm and a weight of 130 kg.

Scientists in India have combined a solar-assisted heat pump with a humidification-dehumidification and vapor compression refrigeration (HDH-VCR) cycle to generate heat and cooling. The system is reportedly able to generate up to 5.5 l per hour (LPH) of fresh water while achieving an ‘enhanced’ coefficient of performance.

H2FLY claims that a recent three-hour test flight, entirely powered by liquid hydrogen, could lead to sustainable long-range flights fueled by liquefied, cryogenic hydrogen. Solaris, meanwhile, has started selling hydrogen buses in Italy.

With battery storage such a crucial aspect of the energy transition, lithium-ion (li-ion) batteries are frequently referenced but what is the difference between NMC (nickel-manganese-cobalt), LFP (lithium ferro-phosphate), and LTO (lithium-titanium-oxide) devices and their underlying chemistry?

Samsung claims its new product is able provide domestic hot water of up to 75 C when the outdoor temperature is between -10 C and 35 C. It relies on an enlarged heat exchanger that the company claims is capable of transferring more heat compared to a conventional outdoor unit.

Shell, which acquired Sonnen four years ago, is now actively seeking a majority shareholder for the Germany storage system specialist.