MONITORING AND ANALYSIS OF THE TURBODETENTOR OPERATING SYSTEM FROM CRYOGENIC DISTILLATION PLANT USING LABVIEW SOFTWARE.

Paper aim was to set up contributions to the development and improvement the information system for monitoring the turbodetentor used in refrigerating cycle and ensuring safety in operation to an experimental pilot installation for the separation of tritium from tritiated heavy water, resulting in nuclear reactors used for electrical energy. The pilot plant features for the tritium separation, involve opportunities to obtain operating regimes very different and from their observation and study to derive conclusions on which is possible to maximize the efficiency of separation and to maintain the security of installations and the environment to acceptable levels. The tritium separation is based on the cooling to very low temperature, e.g. 21K at the peak of cryogenic distillation column. For this purpose it is used the nitrogen as a cooling liquid, obtained from a turbodetentor. The turbodetentor performs, through relaxation, a drop of gas temperature, accompanied by an enthalpy decrease as a consequence of the mechanical work. The optimization presented in this paper refers to determining the values of pressure and temperature on the nitrogen liquefaction cycle at the input and output of the turbodetentor, which maximize the cooling power and efficiency.