Chichenin V. Coolant conditioning efficiency improvement in clarifiers of power plant complex recycled cooling systems.

The dissertation contains an analysis of available power plant recycled cooling systems (RCS). It is shown that in order to keep water-chemical regimes (WCR) in such systems one needs to use extremely high volumes of chemical reagents to process both additional and circulat-ing water. The author proposed complex RCS circuit designs that include additional clarifiers to soften circulating water; these designs help to solve this problem even during the cold part of the year. The author used a mathematical model to find both hydraulic and physical/chemical struc-tures in clarifier slurry layers that govern the main characteristics of mass and volume slurry con-centration and also hydraulic and kinetic characteristics of the particles that form slurry. The au-thor has developed an experimental technique that was used to investigate the hydraulic structure of the particles in the contact zone in limed water and to determine dance rates of the particles that have formed a basis for calculation of the clarifiers used in various RCS. Using RSC scaled model the author investigated sedimentation rate on condenser heat exchange surfaces for new WCRs proposed by the author that do not require reactants. The range when such WCRs can be used was determined. The author has developed nomographic charts that can be used to deter-mine WCR for both additional and circulating water.