Pressurized Water Reactor Steam Generator U-tube Heat Transfer Characteristics Of Study

The atomic energy is the energy of a kind of high-quality high density. Mankind can utilize serious nuclear fission get fission nuclear energy , can receive through light nuclear fusion without any environmental pollution nuclear fusion as well. Pressurized water reactor is adopted extensively at present for nuclear power plant , and the steam generator is a main factor of economical operation.The damage of heat transfer tubes is a main reason for causing the steam generator accident. We can only explain the damage reason from stress function on mechanism of wearing and tearing at present. But the exchange of heat transfer for the first and second circuits' fluids in this process is the direct reason for various stress function. So it is necessary for analyzing equipment performance to study the thermodynamics characteristic of heat transfer tube , it is also extremely essential to improve economic performance and service life of the apparatus. In order to study of changing the impact on apparatus of the heat transfer, the thesis has founded a mathematical model about heat transfer of a U-shaped tube, and haved carried on artificial research on this basis. Result of study indicates that the crooked radius of U-shaped tube has an important influence on its heat absorption length of the coolant outlets section, with the increase of the radius, the length of section of unsaturated heat absorption to the side increases too. On the other hand the influence on changing heat of the size of pipe diameter mainly lies in transferring to hot section at high temperature, i.e. the length of section of unsaturated heat absorption of entrance of coolant. These offer evidence to optimising the U-shaped tube steam generator by distributing different...