Refrigeration system for chilled storage container

A two phase thermal exchange system for extracting thermal energy from a chilled storage container (CSC) in a boat, comprising:

• a condenser configured for thermal exchange between a non-ozone depleting hydrofluorocarbon (NODHFC) refrigerant carried through a first channel of the condenser and circulating water carried through a second channel of the condenser,
• an evaporator configured for thermal exchange between a cooling liquid carried through a first channel of the evaporator and the NODHFC refrigerant carried through a second channel of the evaporator;
• and
• a circulation pump or pumps configured to circulate the cooling liquid between the evaporator and a plurality of coils adapted to be installed to an upper margin of an interior sidewall of the CSC, above an ice containment level in a lower portion of an interior cavity of the CSC, wherein a thermodynamic airflow of cold air above the ice fill level is induced by the plurality of coils to reduce a temperature differential at an air/ice interface within the CSC.

A method of extracting thermal energy from a chilled storage container (CSC) in a boat, comprising:

• circulating water from a body of water supporting the boat through a second channel of a condenser, the water absorbing heat from a non-ozone depleting hydrofluorocarbon (NODHFC) refrigerant circulating through a first channel of the condenser,
• circulating a cooling liquid through a first channel of an evaporator for thermal exchange to the NODHFC refrigerant circulating through a second channel of the evaporator;
• and
• circulating the cooling liquid through a conduit disposed as a plurality of coils within an upper margin of an interior cavity of the CSC above an ice fill level of the CSC, wherein a thermodynamic airflow of cold air above the ice fill level is induced by the plurality of coils to reduce a temperature differential at an air/ice interface within the CSC.