Chilling System Insulation Hatch Design Using Refrigeration For 3GT Sized Vessels

A fast cooling process is needed to maintain the quality of the fish caught. In this research, the chilling system insulated hatch using refrigerant with a capacity of 80-100 kg for a 3 GT sized vessels. The insulation hatch is bolted from fiber material where the walls are cast with polyurethane material. Polyurethane consists of 2 (two) types, namely A and B, where when the two materials are mixed it will expand and form insulation. This hatch making research uses a trial and learn system. To be able to draw heat from the cooling room, the evaporator with a coil length of 30 meters is specially designed, that is, it is wrapped around the shape of the hatch and attached to the aluminum plate. The length of the capillary pipe used is 3.00 cm with a diameter of 0.26 to produce a load temperature of 20C - 4.40C. The test of the chilling system insulation using refrigerant was carried out at the cooling workshop SUPM Waiheru Ambon. The test materials used were sea water as much as 84 kg / L and whole tuna fish with a size of 28 kilograms. The design of this chilling hatch uses a 1/3 HP hermatic compressor with the factory standard Freon R134a. The condenser used is a copper tube type 19U aluminum fin. Based on the test results, the cooling component works well.