Thermal Stability and Performance Testing of Oil based CuO Nanofluids for Solar Thermal Applications
作者： Moucun Yang , Sa Wang , Yuezhao Zhu , Robert A. Taylor , M.A. Moghimi
DOI: 10.3390/EN13040876
关键词:
摘要: For solar thermal systems, nanofluids have been proposed as working fluids due to their enhanced optical and properties. However, nanoparticles may agglomerate over time, heating cycles. Even though pristine proven enhance performance in low-temperature applications, it is still unclear if can meet the reliability requirements of applications. this aim, present study conducted experiments with several formulations oil-based CuO terms maximum operational temperatures stabilities upon cyclic heating. In samples tested, temperature ranged from 80 150 °C, number cycles 5 45, times between 60 min. The results showed that temperature, cycles, time all exacerbated agglomeration samples. Following these experiments, orthogonal were designed improve preparation process resultant thermal-impulse stability. Thermal properties characterized, an “on-sun” linear Fresnel collector was measured. All tests revealed a collecting system could be nanofluids, but stability needs further improved for industrial
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