Germany’s Vaillant has developed an air-source heat pump that uses propane (R290) as the refrigerant. It can produce between 3.4 kW and 8 kW of heat, and domestic hot water to a temperature of up to 75 C. It says the heat pump maximizes savings when paired with rooftop solar.
The South African government is looking for independent power producers to build and operate floating or ground-mounted PV projects at selected government waterworks infrastructure or damns. The projects should be operational for 20 years.
Scientists from the United States and Brazil have developed four different ways to estimate the temperature of floating PV modules. They validated the models with temperature measurements from a floating solar plant in Brazil.
Enel Green Power says it has started working on the largest agrivoltaics plant in Italy. It will feature bifacial PV modules mounted on trackers. Olive trees will grow around the solar panel rows.
Swedish manufacturer Qvantum has developed a 6 kW heat pump for apartments connected to district heating systems. It uses propane (R290) as the refrigerant.
Austrian scientists have created a lab-scale, solid-state, oxygen ion battery based on mixed ionic electronic conducting (MIEC), which is a special class of non-flammable electroceramic materials. The battery has around 30% of the energy density of lithium-ion batteries but can purportedly achieve a longer lifespan.
Researchers from Oak Ridge National Laboratory have developed a free, web-based application that calculates the savings and energy efficiency of residential ground-source heat pumps compared to gas heating.
The government of Cape Verde is seeking developers to build four solar plants across four islands in the archipelagic nation.
Global renewable capacity increased by 295 GW last year, bringing the world to a cumulative installed capacity of 3,372 GW, according to the International Renewable Energy Agency (IRENA).
Phaesun and Solar Cooling Engineering have developed a PV-powered cold room for small-scale farmers in Africa. The solution, which has been installed at a farm in Kenya, includes a 2.8 kW solar array and vapor compression heat pumps.
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