Speaker
Pavel Zacha
(Energy Engineering)
Description
The first wall cooling of the fusion power reactor DEMO is an important part of the fusion power plant development. A cooling ability at high heat flux conditions will affect a lifetime period of the first wall modules having a direct impact on the operating costs of the fusion power plant. According to current knowledge, the water cooling provides the largest ability to remove the high heat flux using various heat transfer intensification methods.
In the paper, the DEMO first wall water cooling on PWR parameters with single phase turbulators is analyzed. Effects of the intensification methods and their impact on the wall material and coolant temperatures are evaluated using thermo-hydraulic CFD calculations. The heat transfer enhancement and pressure loss of the helical fins, standard twisted tape, twisted tape with the central tube, wall detached twisted tape, standard screw tape, wall detached screw tape, dashed screw tape, solid center, and combined helical fins with the screw tape are compared. As the result, the dashed screw tape provides the best ratio of the heat transfer enhancement versus the pressure losses increase.
Co-authors
Pavel Zacha
(Energy Engineering, CTU in Prague, FME, Prague-6, Czech Republic)
Slavomir Entler
(Energy Engineering, CTU in Prague, FME, Prague-6, Czech Republic;Institute of Plasma Physics CAS, Za Slovankou 3, 182 00 Praha 8, Czech Republic)
Stanislav Malec
(Energy Engineering, CTU in Prague, FME, Prague-6, Czech Republic)
