Inferred pH means pH calculated from straight and cation conductivity. The calculation can be applied to condensate, feedwater, and boiler water. Although not widely used in the United States, inferred pH is popular in Europe. Some plant chemists find inferred pH useful because it eliminates the need to measure pH directly, which without proper equipment can be a difficult task. This paper disc...

• Salt permeability of polyamide RO membranes is invariant in a wide salinity range. The solution diffusion model adequately describes our seawater membranes. Membrane leaks may cause correlation between and observed salt permeability. New developments modeling solute transport reverse osmosis (RO) are based on the mechanistic description friction electromigration. In these models, membrane cha...

Many desalination plants still struggle to control biological fouling in seawater reverse osmosis (SWRO) systems as there are no standard methods monitor this type of fouling. Strategies biofouling SWRO have been proposed such antifouling coating and lowering potential feedwater through pretreatment processes. Measuring the has gained increased interest due its direct link biofouling. Moreover,...

Most data-based predictive modeling techniques have an inherent weakness in that they may give unstable or inconsistent results when the predictor data is highly correlated. Predictive modeling problems of this design are usually under constrained and are termed ill-posed. This paper presents several examples of ill-posed surveillance and diagnostic problems and regularization methods necessary...

The authors have reviewed flow-accelerated corrosion (FAC) programs used at various types of conventional fossil plants. The results and findings of the assessments are presented and discussed. A number of emergent areas of FAC damage have been added to the previous suite of recognized susceptible locations with a concentration on damage due to two-phase FAC. Several deficiencies related to fee...

As an important auxiliary unit of Modern large-scale thermal Power Unit, the performance high-pressure feedwater heater will directly affect whole unit. This paper introduces calculation method exergy efficiency heater, and compares with system a 1000MW The results show that can clearly reflect change when terminal difference changes, give new work energy saving emission reduction.