This　paper　focus　on　the　development　of　an　innovative　hub-shaped　fin　for　thermal　performance　enhancement　in　a　phase　change　material　based　shell-tube　thermal　energy　storage　device.　Such　hub-structural　fin　is　inspired　by　the　wheel　hub　of　auto　tyre　and　has　excellent　function　in　the　reinforcement　of　heat　transfer.　A　two-dimension　code　considering　the　effect　of　natural　convection　is　built　to　simulate　the　melting　behaviour　inside　the　device,　and　the　model　veracity　is　demonstrated　through　comparing　the　modelling　results　with　experimental　measurements　got　from　the　literatures.　The　impacts　of　fin　parameters　including　fin　length　and　sub-branch　angle　as　well　as　fin　materials　on　the　melting　performance　are　evaluated.　In　addition,　the　superiority　of　this　hub-shaped　fin　is　estimated　by　comparing　with　other　enhanced　structures　reported　in　the　literatures　under　the　same　investigation　conditions.　The　results　show　that　the　multi-branch　design　of　the　hub-shaped　fin　provides　extra　passage　to　contact　the　PCMs　situated　at　the　melting　dead　zone,　and　hence　improves　the　melting　rate　at　near　the　cold　shell　region　and　shortens　the　whole　phase　change　process　in　the　device.　The　fin　length　shows　profound　effect　on　the　device　melting　performance　with　the　whole　phase　transition　duration　being　abridged　by　68　%　when　the　length　is　increased　from　19　mm　to　25　mm.　Modification　of　sub-branch　angle　can　further　intensify　the　melting　rate　within　the　device.　The　result　reveals　that　the　fin　structure　with　a　sub-branch　angle　of　45　degrees　exhibits　the　highest　melting　rate,　bringing　about　the　acceleration　of　melting　process　by　34.2　%.　For　a　fixed　fin　area　in　a　shell-tube　configuration,　the　hub-shaped　fin　presents　apparent　effective　heat　transfer　surface　in　the　melting　dead　zone　than　other　typical　enhanced　fins　and　hence　fairly　faster　melting　rate　can　be　achieved.　Moreover,　due　to　the　layout　of　evenly　distributed　sub-branches　in　hub-shaped　fin,　more　heat　can　be　transformed　and　stored　within　the　device　in　the　same　period　of　time.　In　comparison　with　the　typical　tree-shaped　fin,　the　average　PCM　temperature　in　hub-shaped　fin　can　be　raised　by　over　3　K,　demonstrating　the　superior　performance　of　the　hub-shaped　fin.