WeHeat said its monoblock air-to-water heat pump features a seasonal coefficient of performance of 4.7 and propane as the refrigerant. The system is available in four versions with output ranging from 8 kW to 11 kW.

UNSW researchers have investigated the impact of two types of soldering fluxes on TOPCon solar modules under damp heat conditions and have found that “no-clean” soldering fluxes can cause severe corrosion of front silver-aluminum contacts. The researchers have also found that denser metallisation structures and lower aluminium content improve corrosion resistance.

China’s reported $7 billion plan to cut polysilicon overcapacity could prompt wafer makers to stockpile lower-cost material and push prices higher, with cell and module suppliers more willing to accept increases, Xin You, senior market analyst at S&P Global, tells pv magazine.

A research team have fabricated a solar thermoelectric generator (STEG) that is reportedly 15 times more efficient than current state-of-the-art devices by concentrating on the managing the hot and the cold sides of the device rather than its semiconductor materials.

The integrated system is claimed to efficiently provide dynamic load balancing, while supporting demand-side management and future smart grid applications. The heat pump technology comes from Mitsubishi’s Ecodan, Mr. Slim, and M heat pump series, which Evhacs modified for integration with the EV charger. 

Researchers in China have improved interface engineering in perovskite-silicon solar cells by using industrially textured silicon. The result is a highly efficienct tandem device that also showed remarkable stability.

An international research team has constructed an indoor perovksite PV device by using a triple passivation treatment to reduce crystal defects in the perovskite film. The cell achieved remarkable efficiency and was also able to retain 92% of its initial performance after 3,200 h.

A Chinese research team has investigated impurity and defect levels in solar cells based on mono cast wafers and have found that around 30% of the devices present an “excessive” reduction in power conversion efficiency. The scientists concluded that cast monocrystalline silicon will unlikely capture a meaningful market share in the near future.

The Chinese manufacturer said its new IEC 61215-certified rooftop PV module relies on a 30 mm aluminum frame and dual-glass construction that reportedly help it withstand extreme snow loads and wind pressure.

Carrier, a US-based heating solutions provider, has introduced a new heat pump system featuring a cooling seasonal energy efficiency rating (SEER2) of up to 29.7 and a heating seasonal performance factor (HSPF2) of up to 12.2.