Numerical investigation on flow and thermal performance of supercritical CO 2 in horizontal cylindrically concaved tubes
To improve the overall heat transfer of supercritical carbon dioxide (SCO 2 ) in a horizontal circular tube, this study proposes a novel kind of tube with cylindrically concaves and fillets on the circular surface. Several tubes are designed accordingly to investigate various parameters like θ (sectorial angle of concaves), r 2 (radius of concaves), r 3 (radius of fillets) and n (number of con
