Evaporation Of Two Efficiency Based On Soft Measurement Experimental Device Parameter Measurement System

In this thesis, the heat transmission coefficient and exit density of two-effect evaporation experimental facility are investigated.For two-effect evaporation experimental facility, the heat transmission coefficient is a critical processing parameter, it determines processing property of evaporation facility. During the facility operating, the original heat transmission coefficient of facility will be reduced greatly by blockage, deposition and so on. The longevity and effect of facility will be influenced if they are not dealt with in time. The exit density is also a vital processing parameter, it is directly determines the quality of the product, what's more it is indirectly reflect the processing property of evaporation facility. Nowadays, the automatic simultaneous measuring online to such two parameters hasn't been realized.In this thesis, the mechanics model of heat transmission coefficient is firstly created by mechanics analysis, then approximate linear relation between heat transmission coefficient and density is obtained through experiment. Based on it, five parameters influence heat transmission coefficient the most are selected for auxiliary variables of the exit density, and then, using NaOH of different initial density as input material for evaporating experiment; adopting sample data on-site; applying multivariable linear regression, the mathematic model of exit density is gained. And also the real-time monitor system for two-effect evaporation experimental facility applying in laboratory is designed and developed based on the models. The running result shows that this steady system can reflect actual producing condition and plays a beneficial role in operation. At the end, the summary and further development are given.