Design and optimization of channel structures of shell-and-tube storage modules
Zhang, Liyuan (2026)
Kandidaatintyö
2026
School of Energy Systems, Energiatekniikka
Kaikki oikeudet pidätetään.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe20260618100210
https://urn.fi/URN:NBN:fi-fe20260618100210
Tiivistelmä
This study numerically investigated the melting behavior of PCMs in shell-and-tube thermal energy storage systems with different internal tube fin structures. Four fin configurations—cross-shaped, fin-shaped, petal-shaped, and branch-shaped—were analyzed using ANSYS Fluent.
Of these four configurations, the cross-shaped fins exhibited the highest melting ratio after 1000 seconds (0.88), while the branch-shaped fins showed the lowest (0.55). Considering the inner tube circumference, the fin-shaped structure demonstrated the best heat transfer efficiency, followed by the branch-shaped and cross-shaped structures, while the petal-shaped structure performed the worst. These findings provide useful guidance for the design and optimization of PCM-based thermal energy storage systems.
Of these four configurations, the cross-shaped fins exhibited the highest melting ratio after 1000 seconds (0.88), while the branch-shaped fins showed the lowest (0.55). Considering the inner tube circumference, the fin-shaped structure demonstrated the best heat transfer efficiency, followed by the branch-shaped and cross-shaped structures, while the petal-shaped structure performed the worst. These findings provide useful guidance for the design and optimization of PCM-based thermal energy storage systems.