Daikin presents modular water-to-water heat pumps
The Japanese manufacturer said its new heat pump line features a modular approach to system design. The new products are available with capacities of 100 kW, 125 kW and 160 kW and can reportedly achieve a water output temperature of 60 C.
Polar Night Energy secures €7.6 million to scale-up sand battery technology
The Finnish startup says the funding will go towards several key purposes, including growing its sales and R&D teams and advancing capabilities in converting stored heat back to electricity.
Residential heat pumps linked to solar-plus-storage achieve higher seasonal performance factor
Researchers at Germany’s Frauhofer ISE have analyzed the performance of a residential heat pump connected to a rooftop PV system relying on battery storage and have found that this combination significantly improves the performance of the heat pump while also increasing considerably the solar array’s self-consumption rate.
Cameroon exempts imported PV components from customs duties
PV modules, inverters, charge controllers, batteries and cables intended for rooftop solar systems will benefit from exemptions from customs duties until 2025.
Portuguese utility says renewables covered 91% of demand in March
Redes Energéticas Nacionais (REN), the grid operator in Portugal, says that renewables covered 91% of national electricity demand in March. This marks the third consecutive month in which clean energy has exceeded 80% of total power demand.
Huawei debuts storage solution for residential PV
Huawei says its new, all-in-one storage solution for residential PV comes in three versions with one, two, or three battery modules, offering 6.9 kWh to 20.7 kWh of usable energy.
Thermoelectric heat-pump boosters can increase supply-water temperature in district heating by 10 C
A Slovenian research group has proposed using a heat pump booster instead of vapor compression technologies in low-temperature district-heating substations and has found that this combination may raise the supply-water temperature from around 32 C to 42 C. In the proposed system configuration ten single-stage Peltier modules were used, each with a maximum cooling power of 165 W and a maximum electric power of 289.2 W.
US solar project pipeline awaiting interconnection permit reaches 1.08 TWh
Solar, wind and battery storage accounted for nearly 95% of the capacity in transmission interconnection queues as of year-end 2023, based on preliminary data from Berkeley Lab, presented in a staff report from the Federal Energy Regulatory Commission.
Testing zeotropic fluids in high-temperature heat pumps
A German-Nigerian research group simulated the usage of mixtures of zeotropic fluids with varying boiling or condensing temperatures in industrial heat pumps. The best results were obtained with a mixture of cyclohexane and cyclopropane.
Growatt launches new balcony storage solution
The new product combines the NEO 800TL-X Microinverter and the NOAH 2000 Battery. Up to four batteries can be stacked, for up to 8,192 Wh of storage capacity.
