Jet self-cascade refrigeration system for residual heat recovery of a tuna fishing boat

摘要

A jet cascade refrigeration plant for residual heat recovery of a tuna fishing boat, comprising an ejector (1), a condenser (2), a gas-liquid separator (3), a high temperature stage dry filter (4), a high temperature stage throttle (5), a An evaporation condenser (6), a high-temperature stage dry filter (7), a low-temperature stage throttle (8), an evaporator (9), a regenerator (10), a low-temperature stage electric control valve (11), a high-temperature stage electric control valve (12) an exhaust gas turbocharger (13), a circulation pump (14), a power generator (15), a diesel engine (16) and a generator (17), characterized in that between the evaporation condenser (6) and the condenser (2) an ejector ( 1) is arranged and between the ejector (1) and the evaporation condenser (6), an exhaust gas turbocharger (13) is arranged; and that the diesel engine (16) is connected to the power generator (15) and the power generator (15) is connected to the circulation pump (14) to power the circulation pump; and that a portion of the exhaust gases discharged from the diesel engine (16) connect to the generator (17) through a tube to provide heat to the generator, the other portion of the exhaust gases flowing in another way into the exhaust gas turbocharger (13) to the exhaust gas turbocharger To provide motive power; and that the exhaust gases passing through the exhaust gas turbocharger (13) carry out a heat exchange in the regenerator (10) with the coolant of the outlet of the evaporator (9); and that the generator (17), the ejector (1), the condenser (2), the gas-liquid separator (3) and the circulation pump (14) form a circuit to provide motive power to the continuous operation of the ejector (1), wherein the coolant in the generator (17) is heated by the exhaust gases and the high-pressure high-pressure vapors formed flow into the ejector (1), the cooling working medium from the regenerator (10) and the evaporation condenser (6) being sucked into the ejector; and that the output of the ejector (1) is connected to the input of the capacitor (2); and that the output of the condenser (2) is connected to the inlet of the gas-liquid separator (3); and that the output of the gaseous working medium of the gas-liquid separator (3) is directly connected to the evaporation condenser (6), wherein the output of the liquid working medium is divided into two parts: a part through the dry filter of the high-temperature stage (4) and the Throttle of the high-temperature stage (5) is connected to the input of the evaporation condenser (6), and the other part is connected to the circulation pump (14); and wherein in the evaporation condenser (6) the liquid working medium absorbs heat and the gaseous working medium is condensed in the liquid; and wherein an exit of the evaporative condenser (6) constitutes the lower boiling liquid refrigerant after the liquid refrigerant passes through the cryogenic stage dry filter (7) and is throttled by the restrictor (8), the liquid refrigerant being introduced into the evaporator (9). flows in and thus absorbs heat, wherein another outlet is the liquid coolant having a higher boiling point, wherein the liquid coolant through the electrical control valve of the high-temperature stage (12) and the electrical control valve (11) of the low-temperature stage with the coolant of the low-temperature stage of the output of the regenerator (10) is mixed, then discharged through the exhaust gas turbocharger (13) into the ejector (1).