Abstract
In this experimental study, a fixed three-dimensional solar collector with a hemispherical geometry has been evaluated in accordance with ASHRAE standards. The collector features spiral tubes that transport fluid from the inlet to the outlet with no riser. Pure water and Ag-water nanofluid at different nanoparticle concentrations (0.1, 0.2 and 0.3%) and different flow rates (0.1–0.6 GPM) were tested under different environmental conditions (temperature and radiation). The results show that this hemispherical solar collector, owing to its geometry and the specific arrangement of its pipes in relation to the overall surface area, exhibits promising thermal performance, making it a viable candidate for both domestic and industrial deployment. The average increase in efficiency when switching from water to Ag-water nanofluid was found to be around 11%, with the maximum efficiency (61.1%) occurring at a nanoparticle concentration of 0.3% and a flow rate of 0.6 GPM.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
