Abstract
The application of phase change materials (PCMs) combined with radiant cooling systems (RCS) in the building sector has attracted enormous interest in recent years owing to its thermal storage potential and feasibility for small-scale energy renovation of existing buildings. Different configurations of these systems and their performance have been experimentally tested and academically investigated. The present study experimentally tested a newly conceived PCM-equipped modular cooling wall and evaluated the impact on thermal performance under different feed water temperatures and PCM concentrations using numerical methods. From the parametric study, we found that the feed water temperature, in comparison to the PCM concentration, is the dominant factor influencing cooling power and the final radiant surface temperature of the wall module. During charging, these two factors impact the time constant τ95 much more than τ63. Comparing the time required for the wall surface to reach the set reference temperature of 23 C∘ during discharging, it takes 2.37 times longer in the 30% PCM scenario than in the scenario without PCM when the feed water temperature is 5 C∘. If the feed water temperature increases to 10 and 15 C∘, this factor changes to 1.88 and 0.59, respectively. Taken together, the results were intended to optimize the design and definition of the PCM-RCS configuration for various usage scenarios.
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.
