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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Assessment of heat exchangers replacement
 Kocanda, Tomáš ; Baláš, Marek (referee) ; Milčák, Pavel (advisor)
This thesis addresses the issue of heat dissipation from the oil system, specifically the lubricating oil of a diesel generator at a nuclear power plant. The literature review section introduces diesel generators, describes the heat exchangers used, and provides a detailed explanation of the problem in the context of a nuclear power plant. In the computational section, a verification calculation of the existing shell-and-tube oil cooler is first performed, followed by the design of a new plate heat exchanger according to specified parameters without altering the layout. In the final part of the thesis, an analysis of the new design compared to the existing one is conducted, including an evaluation of the layout.
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Replacement of existing heat exchanger
 Vaculík, Štěpán ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This thesis deals with the possibilities of replacing an existing inefficient heat exchanger with a new one. In the first theoretical part a research of heat exchanger types, their operational features and suitable application is carried out. In the second practical part, the control calculation of the existing bundle heat exchanger with U-tubes is performed first, followed by the thermo-hydraulic design of a new bundle heat exchanger with straight tubes and a new plate heat exchanger. In the last part of the work, a comparison and assessment of which of the alternatives is the most suitable is made.
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