PARAMETRIC THERMOHYDRAULIC CALCULATIONS FOR ADVANCED PRESSURIZED WATER REACTORS WITH THE CODE HADA-2
The paper describes the improvements introduced in the computer code HADA for the thermohydraulic design of Advanced Pressurized Water Reactors. The main modifications are the use of the water enthalpy, rather than the water temperature, for the equation giving the limitation due to the hot channel factor, and the introduction of a correction factor to ensure that the ratio between the critical heat flux and the hot channel heat flux is always greater than 1.3. About 200 different reactors have been calculated with the improved version HADA-2 of the code. The main results of these calculations are that, in the range of interest, homogeneous and heterogeneous reactors are about equivalent (same net electrical output of the plant for the same ratio between water and fuel rod volume). For the homogeneous reactors the optimum designs are for H/d=20 (H=axial pitch of the integral spiral ribs on fuel rod surface, d=diameter of the fuel rod) and for the heterogeneous reactors for H/d=35.
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Record Number: 1989126014800 / Last updated on: 1989-03-01
Available languages: en