Design, operation and maintenance procedures of the provision refrigeration system on board a cargo ship

Prikazani su i kritički obrađeni zahtjevi na projektna i radna svojstva sustava hlađenja brodskih hladionica provijanta. Izračunat je potreban kapacitet hladionice i rashladnog uređaja, odabrana radna tvar te prikazan i opisan rashladni proces. Opisana su svojstva komponenti koje se koriste u rashladnom uređaju. Korištenjem računalnih izbornih programa proizvođača rashladne opreme proveden je izbor komponenti rashladnog uređaja. Prikazani su odgovarajući postupci regulacije kapaciteta kompresora te je odabrana kontinuirana regulacija dobave kompresora promjenom broja okretaja korištenjem invertera. Prikazana je i opisana shema spajanja uređaja i objašnjena regulacija rada cijele hladionice. U nastavku rada su opisani važniji radni postupci s rashladnim uređajem koje treba provoditi posada broda, te prezentiran sustav otkrivanja kvarova na rashladnom uređaju kakav preporučaju proizvođači rashladne opreme.Requirements for the design and operational properties of refrigeration systems for ships' provision refrigerated storages are presented. The required capacity of the cold store and refrigeration unit was calculated, the working substance selected and the refrigeration process presented and described. The properties of the components used in the refrigeration unit have been described. Using the refrigeration equipment manufacturer's computer software, a selection of refrigeration components was conducted. The appropriate procedures for the capacity control of the compressor are shown, and the continuous control of the compressor capacity is selected by varying the compressor speed using the inverter. The scheme of connection of the refrigeration system is presented and described and the operation control of the whole cold store is explained. The following sections describe the most important operating procedures for the refrigeration unit to be carried out by the ship's crew and presents a system for detecting defects in the refrigeration unit as recommended by the refrigeration equipment manufacturers