Abstract
In this study, a three-dimensional oscillating heat pipe with flat plate evaporator has been designed and experimentally tested for the cooling of concentrating photovoltaic cells. The startup performance, effective thermal resistance, and inclination angle effect on the thermal performance of oscillating heat pipes with/without sintered copper particles in the evaporator section were compared and evaluated. Experimental results showed that porous structures of sintered copper particles on the evaporator can significantly improve the vapor bubble generation and growth rate, and easily produce thin film evaporation to enhance latent heat transfer capacity. When charged with the same volume fraction of ethanol, the three-dimensional oscillating heat pipe with sintered copper particles always outperformed the one without them, especially at the horizontal orientation. The temperature of concentrating photovoltaic cells can be maintained below 57 °C at a corresponding heat flux of 5.88 W/cm2 when the input power is 40 W. In addition, a lowest thermal resistance of 0.145 K/W was achieved by the oscillating heat pipe with sintered copper particles at a filling ratio of 30% under an input power of 100 W. The three-dimensional oscillating heat pipe associated with outstanding heat transfer performance provides a promising candidate for concentrating photovoltaic cooling.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.