Articles written by Lior Kahana

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Research & Development
Chinese scientists develop hydrogen-powered CO₂ heat pump with PCM storage Chinese researchers have modeled a heating system combining PEM fuel cells, a CO₂ heat pump and phase-change thermal storage, assessing the impact of different thermal boundary conditions. The results show that cathode inlet temperature has the strongest effect on hydrogen-to-heat and hydrogen-to-electricity performance, while the PCM tank can meet modeled domestic hot water demand.
Lior Kahana
Sep 30, 2026
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Research & Development
Researchers test laminated bamboo structures for floating PV platforms Chinese researchers tested thin-plate glued laminated bamboo (glubam) assemblies for use in floating PV platforms, assessing their flexural behavior under different plate and bolt configurations. The results show that plate configuration, bolt spacing, bolt diameter, and thickness distribution can significantly affect the structures’ ultimate load capacity.
Lior Kahana
Sep 30, 2026
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Research & Development
Bilayer transparent conductive film for electrostatic dust removal achieves 96.36% cleaning rate on PV panels Chinese researchers have developed an bilayer transparent conductive film for electrostatic dust removal from PV panels. An 80 nm magnesium fluoride coating offered the best balance of optoelectronic and cleaning performance, with dust removal reaching 96.36%.
Lior Kahana
Sep 29, 2026
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Research & Development
Perovskite-silicon tandem solar cell built on textured silicon reaches 30.77% efficiency Chinese researchers have developed a healing treatment to improve perovskite film quality on industrial textured silicon for perovskite-silicon tandem solar cells. The approach enabled a certified tandem efficiency of 30.77% while improving device stability.
Lior Kahana
Sep 29, 2026
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Research & Development
Rising air injection rates boost compressed air energy storage efficiency Chinese researchers have analyzed how different air injection strategies affect energy storage rates and heat losses in compressed air energy storage caverns. They found that a linearly increasing air flow rate can raise the energy storage rate from 85.5% to 87.5% compared with constant-rate injection.
Lior Kahana
Sep 28, 2026
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Research & Development
PVT-assisted heat pumps achieve up to 49.3% exergy efficiency in cold climates Chinese researchers have analyzed a PVT-assisted air-source heat pump system that recovers waste heat from solar panels to preheat incoming air and improve heating performance in cold climates. The system achieved exergy efficiencies of 41.2% to 49.3%, while reducing evaporator exergy losses and suppressing frost formation.
Lior Kahana
Sep 28, 2026
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Research & Development
Solar panel waste silver turned into catalyst for carbon monoxide production South Korean researchers have recovered high-purity silver from end-of-life silicon solar panels and used it to produce electrocatalysts for converting carbon dioxide into carbon monoxide. The recycled-silver electrode sustained CO production for more than 600 hours, with its rough surface helping to prevent electrolyzer flooding.
Lior Kahana
Sep 25, 2026
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Research & Development
The impact of phase change material on rear-side PV heat transfer A year-long outdoor experiment in Milan found that a PCM-backed PV module had 45.2% lower median rear-side convective heat flux than a reference module. The researchers also found that PCM’s thermal history affected heat rejection, even when its rear surface was at the same temperature.
Lior Kahana
Sep 25, 2026
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Research & Development
Ventilator exhaust air, evaporative cooling boost residential heat pump efficiency South Korean researchers have developed a residential air-source heat pump concept that combines energy recovery ventilator exhaust air with direct evaporative cooling. The system improved COP by 7.3% to 15.2% under hot and humid conditions and could be suitable for retrofitting existing heat pumps.
Lior Kahana
Sep 24, 2026