Abstract
ICSSWH are advantageous solar thermal systems for residential buildings. Their overall efficiency can be improved by increasing stratification in the storage tank. In this paper the charge of a high aspect ratio cavity representing the storage of an ICSSWH was studied experimentally. A satisfying stratification was obtained by heating the storage tank in the middle and inserting a stratification plate. The study examined various angles of system inclination (30, 45 and 60° relative to the horizontal), heat flux imposition (1800, 2700 and 3600Wm−2) and length of the stratification plate. The experiments lasted for three hours, temperatures were measured using thermocouples and velocities were measured via particle image velocimetry. We showed that stratification was higher with a shorter stratification plate, and that it increased with greater heat flux and lower angles. Flow observations on the presented configuration showed that reverse flow was responsible for this thermal behavior. This phenomenon, however, increases with time and could result in creation a dead volume under the heated area.
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.
