In　order　to　understand　the　heat　transfer　characteristics　of　molten　salt　and　testify　the　validity　of　the　well-known　empirical　convective　heat　transfer　correlations,　experimental　study　on　transition　convective　heat　transfer　with　molten　salt　in　a　circular　tube　was　conducted.　Molten　salt　circulations　were　realized　and　operated　in　a　specially　designed　system　over　1000　h.　The　average　forced　convective　heat　transfer　coefficients　of　molten　salt　were　determined　by　least-squares　method　based　on　the　measured　data　of　flow　rates　and　temperatures.　Finally,　a　heat　transfer　correlation　of　transition　flow　with　molten　salt　in　a　circular　tube　was　obtained　and　good　agreement　was　observed　between　the　experimental　data　of　molten　salt　and　the　well-known　correlations　presented　by　Hausen　and　Gnielinski,　respectively.　(C)　2009　Elsevier　Inc.　All　rights　reserved.