Knowledge:

- use of refrigeration equipment on sea vessels of various purposes. General requirements of the Register for refrigerating plants (RP) of marine vessels, classification of refrigerated vessels. Peculiarities of the design of RP, location of refrigerating equipment in refrigerated engine rooms;

- basic concepts of thermodynamics of wet air, their physical meaning, theoretical definitions. Processes of changes in the state of wet air in the d-h diagram. Setting the temperature and air humidity in the rooms that are cooled;

- purpose of insulation, thermal insulation materials, heat and mass transfer in insulation. Vapor-waterproofing materials. Designs of insulating fences, determination of the optimal insulation thickness. Methods of calculation of ship insulation structures, methods of their industrial tests. Thermal insulation of gas tanker tanks;

- designation and classification of heat exchangers (HE), main and auxiliary HEs, thermohydraulic processes occurring in HE elements during boiling and condensation of the refrigerant. Types of heat transfer. The main types of evaporators and air coolers, condensers, liquid subcoolers, regenerative heat exchangers, intermediate tanks and receivers;

- definition of the cooling system (CS), its composition, purpose, classification and basic requirements. Systems with direct cooling: pumpless and pump-circulation, with an intermediate coolant: battery cooling system, with a thermal jacket, panel system. Their schemes, principle of operation, advantages and disadvantages. Characteristics of refrigerants. Air CS and combined systems;

- the requirements for ship refrigerating plant (SRP) schemes. Schemes of connecting units of SRP such as single-stage piston and screw compressors, condensers, receivers, regulating stations, intermediate vessels, intermediate cooler. Schemes of refrigerant supply units to evaporative systems. Unit for emergency release of liquid and vapor refrigerant. Schemes of supply unit and connection of salt-water evaporators and cooling devices with an intermediate coolant.

Be able to:

- use the d-h diagram when determining the state of wet air, the processes of its cooling and heating, drying and humidification, as well as mixtures of its various states;

- determine the coefficient of thermal conductivity of the insulation, its condensation zone and ways of its elimination;

- carry out their thermal calculation and selection;

- carry out a comparative assessment and selection of air conditioners and the method of refrigeration supply;

- read diagrams of refrigerating plants and be guided by them during the operation of SRP.

The acquisition of learning outcomes for the educational component is achieved by studying the educational material in the following sections:

- Types and arrangement of refrigerating ships, their premises. Requirements for ship refrigerating installations.

- Fundamentals of thermodynamics of wet air.

- Thermal insulation and insulating structures.

- Cooling systems on ships.

- Schemes of automated control of ship refrigerating installations