In　order　to　obtain　the　discharge　heat　transfer　of　molten　salt　in　single　energy　storage　tank　and　improve　the　heat　transfer,　the　discharge　of　molten　salt　with　three　different　energy　storage　tanks　was　studied　by　experiment.　Heat　discharge　performance　of　single　energy　storage　tank　system　is　analyzed　by　molten　salt　temperature　distribution,　the　heat　exchanger　outlet　temperature,　transient　heat　transfer,　the　energy　depletion　and　heat　exchanger　effectiveness.　The　results　showed　that　the　single　storage　tank　with　a　cylindrical　baffle　and　the　cold　air　inlet　in　the　top　is　the　best　heat　transfer　mode.　With　the　baffle,　minimal　thermal　stratification　develops　within　the　bulk　storage　fluid;the　heat　exchanger　outlet　temperature　and　transient　heat　transfer　are　both　achieved　the　highest;heat　exchanger　effectiveness　is　also　the　highest　and　extract　time　is　the　least.　The　results　in　this　paper　can　be　a　base　for　the　design　of　single　energy　storage　tank.　©　2018,　Editorial　Board　of　Acta　Energiae　Solaris　Sinica.　All　right　reserved.