Scientists have used stearic acid and a combination of stearic acid and carbon black to increase thermal conductivity in a photovoltaic-thermal system linked to a heliostat field concentrator. From a temperature of 30 C at the inlet, they were able to heat the water to up to 59 C.
Scientists in Morocco have conceived a photovoltaic-thermal panel that uses a channel-box heat exchanger consisting of 94 channels attached directly to the PV module. The simulated design reportedly results in an overall panel efficiency of over 90% and good results in terms of temperature inhomogeneity.
Scientists in China have demonstrated a photovoltaic-thermal system that utilizes Tesla valves to increase cooling and efficiency. The system was found to have better performance compared to PVT systems made with several different cross-sectional structures.
Sunmaxx PVT, a photovoltaic-thermal (PVT) solar module specialist, has built an automated 50 MW module factory near Dresden, Germany.
Solar Brother, a French startup, has developed a solar aerothermal system for space heating. The system incorporates a PV panel, an aerothermal heat pump module, and cassette filtration, enabling homeowners to save on heating.
An Austrialian-Iranian research team has developed a thermoelectric generator incorporating photovoltaic-thermal panels and nanofluids for cooling.
Scientists in the United States has developed a new photovoltaic-thermal system design that utilizes parallel water pipes as a cooling system to reduce the operating temperature of photovoltaic panels. The waste heat generated by this process is then used to generate domestic hot water.
A UK-based research team has developed a new design technique for photovoltaic-thermal air collectors. The new parameters reportedly enable devices with lower PV module temperatures and higher efficiencies.
US-based Creighton University has equipped a new student residence with solar heat collectors generating an annual peak capacity of 69.9 kW thermal energy. The VirtuHOT HD system, conceived for rooftop applications, includes an absorber plate, a borosilicate glass tube, and an integrated mounting system.
South Korea’s Rural Development Administration has created an energy system for greenhouses that combines photovoltaic-thermal (PVT) panels with a ground-source heat pump. It is said to compensate, via the PVT panels, the typical shortcomings of geothermal energy and to be able to reduce heating and cooling costs in greenhouses by up to 78%.
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