KR20120128512A - Rankine cycle system and ship with the same - Google Patents

Abstract

PURPOSE: A rankine cycle system and a ship with the same are provided to supply thermal energy from second heat transfer fluid to the working fluid in a first evaporator. CONSTITUTION: A rankine cycle system comprises a thermal power unit(1100) and an absorption refrigerator(1200). As to the thermal power unit, a first evaporator(1110), a first turbine, a first condenser(1130), and a pump(1140) are connected to a flow line in order. As to the absorption refrigerator, a generator(1210), a second condenser(1220), a second evaporator(1230), and an absorber(1240) are connected each other. The Absorbent, refrigerant, or mixture of the absorbent with the refrigerant circulates in the absorption refrigerator. A line of the flow lines, which connects the first turbine and first condenser heats the mixture in the regenerator. First heat transfer fluid flows in a first heat transfer line(1300). As to the first heat transfer line, the heat exchange between the first heat transfer fluid and the working fluid in the first evaporator occurs.

Description

Rankine cycle system and vessel with same {RANKINE CYCLE SYSTEM AND SHIP WITH THE SAME}

The present invention relates to a Rankine cycle system and a vessel having the same, and more particularly, to a Rankine cycle system incorporating an absorption refrigerator and a vessel having the same.

The Rankine cycle system is a cycle consisting of two isostatic change lines and two adiabatic change lines, which is a thermal power system that converts thermal energy into mechanical energy while some or all of the working fluid changes phase into the liquid and gaseous states.

 With rising oil prices and energy saving issues, technology for Rankine cycle systems that generate power using waste heat, such as engine exhaust, is becoming important. In particular, when power production is limited, such as ships, technology for Rankine cycle system using waste heat generated in the ship is important.

However, in addition to the technology of producing steam by using the exhaust gas of the engine in the ship, the technology of utilizing the various waste heat generated in the ship is still insignificant.

In addition, even if the Rankine cycle system is applied to a ship, fresh water and sea water are used as cooling water, and thus power cannot be produced effectively. This is because the lower the temperature of the coolant, the higher the power production.

Embodiments of the present invention seek to provide a Rankine cycle system utilizing waste heat.

Embodiments of the present invention seek to provide a Rankine cycle system that increases power output.

The objects of the present invention are not limited thereto, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, the thermal power unit and the regenerator, the second condenser, the second evaporator and the absorber, in which the first evaporator, the first turbine, the first condenser and the pump are sequentially connected in a flow line, are connected to each other to absorb the absorbent and the refrigerant. Or an absorption chiller through which the mixture of absorbent and refrigerant flows, wherein the line connecting the first turbine and the first condenser in the flow line is provided such that a working fluid flowing therein heats the mixture in the regenerator. To provide.

The apparatus may further include a first heat transfer line through which the first heat transfer fluid flows, and the first heat transfer line may be provided to heat exchange the first heat transfer fluid with the working fluid flowing through the first condenser and the refrigerant flowing through the second evaporator.

The second evaporator may also include an evaporation line through which the first heat transfer fluid flows, and the evaporation line may be provided to exchange heat with the refrigerant flowing through the second evaporator and the external cooling system.

In addition, the first evaporator may include a heat source line for supplying heat energy into the first evaporator, and the heat source for supplying heat energy to the heat source line may be exhaust gas of the engine.

The apparatus further includes an exhaust line for discharging exhaust gas of the engine, an engine exhaust system including a first heat exchanger connected to the exhaust line, and a second heat transfer line through which the second heat transfer fluid flows, wherein the second heat transfer fluid flows through the second heat transfer fluid. May be provided to exchange heat with the working fluid flowing through the first evaporator and with the exhaust gas flowing through the first heat exchanger.

In addition, an exhaust line for discharging the exhaust gas of the engine, a second turbine connected to the exhaust line to expand the exhaust gas, a compressor connected to the second turbine to compress the inlet gas using energy generated by the second turbine, and An engine exhaust system comprising a first cooler for cooling the inlet gas compressed by the compressor and a second heat transfer line through which the second heat transfer fluid flows, wherein the second heat transfer line flows through the second heat transfer fluid to the first evaporator. It may be provided to exchange heat with the working fluid and the inlet gas flowing in the first cooler.

In addition, an exhaust line for discharging the exhaust gas of the engine, a second turbine connected to the exhaust line to expand the exhaust gas, a first heat exchanger connected to the exhaust line, a second turbine connected to the second turbine And a second heat transfer line through which an engine exhaust system including a compressor for compressing the inlet gas using energy, a first cooler for cooling the inlet gas compressed by the compressor, and a second heat transfer fluid flow therethrough; The silver heat transfer fluid may be provided to heat exchange with the working fluid flowing through the first evaporator, the exhaust gas flowing through the first heat exchanger and the inlet gas flowing through the first cooler, respectively.

The second heat transfer line also includes a heat source line connected to the first evaporator, a first heat exchange line connected to the first heat exchanger, and a first cooling line connected to the first cooler, wherein the first heat exchange line and the first cooling line are heat source lines. Commonly connected to

According to one aspect of the invention, there is provided a vessel comprising an engine and a Rankine cycle system as described above.

According to embodiments of the present invention, it is possible to provide a Rankine cycle system that effectively utilizes waste heat.

According to embodiments of the present invention, it is possible to effectively increase the power production.

According to embodiments of the present invention, it is possible to minimize the capacity of the condenser of the thermal power unit.

1 is a view showing a Rankine cycle system according to a first embodiment of the present invention.
2 shows a Rankine cycle system according to a second embodiment of the present invention.
3 is a view showing a Rankine cycle system according to a third embodiment of the present invention.
4 illustrates a Rankine cycle system according to a fourth embodiment of the present invention.
5 shows a Rankine cycle system according to a fifth embodiment of the present invention.
6 illustrates a Rankine cycle system according to a sixth embodiment of the present invention.
7 illustrates a Rankine cycle system according to a seventh embodiment of the present invention.
8 illustrates a Rankine cycle system according to an eighth embodiment of the present invention.
9 illustrates a Rankine cycle system according to a ninth embodiment of the present invention.

Hereinafter, a Rankine cycle system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 shows a Rankine cycle system 1 according to a first embodiment of the invention.

Referring to FIG. 1, the Rankine cycle system 1 includes a thermal power unit 1100, an absorption chiller 1200, and a first heat transfer line 1300.

The thermal power plant 1100 includes a first evaporator 1110, a first turbine 1120, a first condenser 1130 and a pump 1140. The first evaporator 1110, the first turbine 1120, the first condenser 1130 and the pump 1140 are sequentially connected to each other through a flow line 1150 through which a working fluid flows.

Flow line 1150 includes a first flow line 1152, a second flow line 1154, a third flow line 1156, and a fourth flow line 1158. The first flow line 1152 connects the first evaporator 1110 and the first turbine 1120. The second flow line 1154 connects the first turbine 1120 and the first condenser 1130. The third flow line 1156 connects the first condenser 1130 and the pump 1140. The fourth flow line 1158 connects the pump 1140 and the first evaporator 1110.

The first evaporator 1110 receives thermal energy from the outside to heat the working fluid in the liquid state. The working fluid is evaporated to saturated steam in the first evaporator 1110. The first evaporator 1110 is provided with a heat source line 1112 for supplying external heat energy. External thermal energy may be exhaust gas of the engine 10.

The first turbine 1120 expands the working fluid in the vapor state and converts thermal energy of the working fluid into mechanical energy.

The first condenser 1130 condenses the working fluid through external cooling water. The first condenser 1130 is provided with a condensation line 1132 through which coolant flows.

The pump 1140 compresses the condensed working fluid and then flows the working fluid to the first evaporator 1110.

The working fluid of the thermal power plant 1100 is heated by the first evaporator 1110, expanded through the turbine 1120, and then liquefied again via the first condenser 1130 and then pumped by the pump 1140. 1110). In addition, the generator 1160 may be coupled to the turbine 1120 of the thermal power device 1100 to produce power.

The thermal power unit 1100 may use, as a working fluid, an organic material that evaporates at a lower temperature than water. For example, the organic material may be freon or hydrocarbon.

The absorption chiller 1200 includes a regenerator 1210, a second condenser 1220, a second evaporator 1230, and an absorber 1240.

The regenerator 1210, the second condenser 1220, the second evaporator 1230 and the absorber 1240 are refrigerant piping, absorbent piping or mixture piping through which the refrigerant 1264, the absorbent 1262, or a mixture 1260 thereof flows. Are connected to each other through.

The refrigerant pipe through which the refrigerant 1264 flows includes a first refrigerant pipe 1251, a second refrigerant pipe 1255, and a third refrigerant pipe 1257. The first refrigerant pipe 1251 connects the regenerator 1210 and the second condenser 1220. The second refrigerant pipe 1255 connects the second condenser 1220 and the second evaporator 1230. The third refrigerant pipe 1257 connects the second evaporator 1230 and the absorber 1240. The refrigerant flows between the regenerator 1210, the second condenser 1220, and the second evaporator 1230 through the refrigerant pipe.

Absorbent 1262 flows between regenerator 1210 and absorber 1240 through absorbent piping 1253.

The mixture 1260 flows between the absorber 1240 and the regenerator 1210 through the mixture piping 1259.

Regenerator 1210 heats mixture 1260 to separate the mixture into absorbent 1262 and refrigerant 1264. Regenerator 1210 is coupled with second flow line 1154 of thermal power plant 1100 to receive thermal energy from a working fluid flowing in second flow line 1154. Thus, the working fluid in the second flow line 1154 is cooled after heat exchange with the mixture 1260.

The refrigerant 1264 separated from the mixture 1260 is transferred to the second condenser 1220 through the first refrigerant pipe 1251 connected to the top of the regenerator 1210. Absorbent 1262 separated from mixture 1260 flows into absorber 1240 through absorbent piping 1253 connected to regenerator 1210.

The second condenser 1220 condenses the refrigerant 1264 separated from the mixture 1260 in the regenerator 1210 using cooling water. The second condenser 1220 is provided with a heat exchanger (not shown) through which coolant flows. The refrigerant 1264 condensed by the cooling water flows to the second evaporator 1230 through the second refrigerant pipe 1255 connected to the second condenser 1220.

The second evaporator 1230 absorbs thermal energy from the outside to evaporate the refrigerant 1264 condensed in the second condenser 1220. The second evaporator 1230 is provided with an evaporation line 1232 through which a first heat exchange fluid flows for supplying thermal energy to the refrigerant 1264. The second evaporator 1230 may maintain a low pressure so that the refrigerant 1264 may evaporate at a low temperature. The refrigerant 1264 absorbs and evaporates thermal energy of the first heat exchange fluid. In addition, the first heat exchange fluid in evaporation line 1232 is cooled through heat exchange with refrigerant 1264. The evaporated refrigerant flows to the absorber 1240 through a third refrigerant pipe 1257 connected to the second evaporator 1230.

Absorber 1240 absorbs refrigerant evaporated in second evaporator 1230 into absorbent 1262 to produce mixture 1260. The absorber 1240 is maintained at an appropriate temperature so that the absorbent 1262 can continuously absorb the refrigerant 1264. An absorber 1240 is provided with a heat exchanger (not shown) through which coolant flows.

The absorbent 1262 is introduced into the absorber 1240 from the regenerator 1210 through an absorbent pipe 1253 connected to the upper part of the absorber 1240. The refrigerant 1264 introduced from the third refrigerant pipe 1257 connected to the second evaporator 1230 is absorbed by the absorbent 1262 and mixed. The mixture 1260 is transferred to the regenerator 1210 through a mixture tubing 1259 connected to the absorber 1240.

The first heat transfer line 1300 is provided so that the first heat transfer fluid flowing therein heat exchanges with the working fluid flowing in the first condenser 1130 and the refrigerant flowing in the second evaporator 1230. That is, the first heat transfer line 1300 connects the evaporation line 1232 of the second evaporator 1230 of the absorption chiller 1200 and the condensation line 1132 of the first condenser 1130 of the thermal power unit 1100. It is formed by. The first heat transfer fluid cooled by the refrigerant 1264 in the second evaporator 1230 condenses the working fluid in the first condenser 1130.

The working fluid of the Rankine cycle system 1 having such a configuration supplies thermal energy to the mixture 1260 in the regenerator 1210 via the second flow line 1154. In addition, the first heat transfer fluid of the Rankine cycle system 1 supplies thermal energy to the refrigerant 1264 in the second evaporator 1230 via the first heat transfer line 1300, and the cooled first heat transfer fluid is a first heat transfer fluid. Condensing the working fluid in the first condenser 1220 via line 1300.

2 shows a Rankine cycle system 2 according to a second embodiment of the invention.

Referring to FIG. 2, the Rankine cycle system 2 includes a thermal power unit 2100, an absorption chiller 2200, an engine exhaust system 2400, a first heat transfer line 2300, a second heat transfer line 2500 and Three heat transfer lines 2600.

The first evaporator 2110, the first turbine 2120, the first condenser 2130, and the pump 2140 of the thermal power unit 2100 may include a first evaporator 1110 of the thermal power unit 1100 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1140.

The regenerator 2210, the second condenser 2220, the second evaporator 2230 and the absorber 2240 of the absorption chiller 2200 are the regenerator 1210 and the second condenser 1120 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240.

The first heat transfer line 2300 is provided in a configuration similar to the first heat transfer line 1300 of FIG. 1.

Engine exhaust system 2400 includes an exhaust line 2410, a second turbine 2430, a first heat exchanger 2450, a compressor 2470 and a first cooler 2490. The exhaust gas flowing out of the engine 10 is discharged through the second turbine 2430 and the first heat exchanger 2450 through the exhaust line 2410.

The second turbine 2430 is connected to the exhaust line 2410 to expand the exhaust gas discharged from the engine 10. The second turbine 2430 converts thermal energy of the exhaust gas into mechanical energy.

The first heat exchanger 2450 is connected to the exhaust line 2410. Within the first heat exchanger 2450 is provided a first heat exchange line 2452 through which a second heat transfer fluid flows. The exhaust gas flowing through the first heat exchanger 2450 through the exhaust line 2410 supplies thermal energy to the second heat transfer fluid of the first heat exchange line 2452.

The compressor 2470 is connected to the second turbine 2430. The compressor 2470 compresses the inlet gas by using the mechanical energy generated by the second turbine 2430. The inlet gas can be air.

The first cooler 2490 cools the inlet gas compressed by the compressor 2470. The first cooler 2490 is provided with a first cooling line 2492 for supplying a third heat transfer fluid. The third heat transfer fluid introduced into the first cooling line 2492 absorbs thermal energy of the inlet gas. The inlet gas is cooled by the third heat transfer fluid.

The second heat transfer line 2500 may include an exhaust gas through which a second heat transfer fluid flowing therein flows through the first heat exchanger 2450, a working fluid flowing through the first evaporator 2110, and an inflow gas flowing through the first cooler 2490. And heat exchange respectively. That is, the second heat transfer line 2500 is the first heat exchange line 2452 of the first heat exchanger 2450 and the first cooling line 2492 of the first cooler 2490 are heat source lines of the first evaporator 2110. It is formed by being commonly connected to (2112). The second heat transfer fluid supplied with the heat energy of the exhaust gas and the heat energy of the inlet gas supplies heat energy to the working fluid in the first evaporator 2110.

The Rankine cycle system 2 having such a configuration operates similarly to the Rankine cycle system 1 of FIG. 1.

However, the first evaporator 2110 of the thermal power unit 2100 receives the heat energy of the exhaust gas of the engine 10 and the inlet gas introduced into the compressor 2470 through the second heat transfer line 2500.

 3 shows a Rankine cycle system 3 according to a third embodiment of the invention.

Referring to FIG. 3, the Rankine cycle system 3 includes a thermal power unit 3100, an absorption chiller 3200, an engine exhaust system 3400, a first heat transfer line 3300 and a second heat transfer line 3500. do.

The first evaporator 3110, the first turbine 3120, the first condenser 3130 and the pump 3140 of the thermal power unit 3100 may include a first evaporator 1110 of the thermal power unit 1100 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1140. The regenerator 3210, the second condenser 3220, the second evaporator 3230 and the absorber 3240 of the absorption chiller 3200 are the regenerator 1210 and the second condenser 1220 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240. The first heat transfer line 3300 is provided in a configuration similar to the first heat transfer line 1300 of FIG. 1.

Engine exhaust system 3400 includes an exhaust line 3410 and a first heat exchanger 3450. The exhaust gas flowing out of the engine is discharged through the first heat exchanger 3450 through the exhaust line 3410. The first heat exchanger 3450 of the engine exhaust system is provided in a configuration similar to the heat exchanger 2450 of FIG. 2.

The second heat transfer line 3500 is provided so that the second heat transfer fluid flowing therein exchanges heat with the exhaust gas flowing in the first heat exchanger 3450 and the working fluid flowing in the first evaporator 3110. That is, the second heat transfer line 3500 is formed by connecting the heat exchange line 3452 of the engine exhaust system 3400 and the heat source line 3112 of the thermal power unit 3100. The second heat transfer fluid supplied with heat energy from the exhaust gas supplies heat energy to the working fluid in the first evaporator 3110.

The Rankine cycle system 3 having such a configuration operates similarly to the Rankine cycle system 2 of FIG. 2.

However, the first evaporator 3110 of the thermal power unit 3100 receives the thermal energy of the exhaust gas of the engine 10 through the second heat transfer line 3500.

 4 shows a Rankine cycle system 4 according to a fourth embodiment of the invention.

Referring to FIG. 4, the Rankine cycle system 4 includes a thermal power unit 4100, an absorption chiller 4200, an engine exhaust system 4400, a first heat transfer line 4300 and a second heat transfer line 4500. do.

The first evaporator 4110, the first turbine 4120, the first condenser 4130 and the pump 4140 of the thermal power unit 4100 may include the first evaporator 1110 of the thermal power unit 1100 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1240. The regenerator 4210, the second condenser 4220, the second evaporator 4230 and the absorber 4240 of the absorption chiller 4200 are the regenerator 1210 and the second condenser 1220 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240. The first heat transfer line 4300 is provided in a configuration similar to the first heat transfer line 1300 of FIG. 1.

Engine exhaust system 4400 includes exhaust line 4410, second turbine 4430, compressor 4470, and first cooler 4490. The exhaust gas flowing out of the engine 10 is discharged through the exhaust line 4410.

The exhaust line 4410, the second turbine 4430, the compressor 4470 and the first cooler 4490 of the engine exhaust system 4400 may include the exhaust line 2410, the second turbine 2430, and the compressor ( 2470 and a similar configuration to the first cooler 2490.

The second heat transfer line 4500 is provided such that the second heat transfer fluid flowing therein exchanges heat with the inlet gas flowing in the first cooler 4452 and the working fluid flowing in the first evaporator 4110. That is, the second heat transfer line 4500 is the first heat source line 4112 of the first cooling line 4452 of the first cooler 4490 of the engine exhaust system 4400 and the first evaporator 4110 of the thermal power unit 4100. Is formed by connecting The second heat transfer fluid supplied with heat energy from the inlet gas supplies heat energy to the working fluid in the first evaporator 4110.

The Rankine cycle system 4 having such a configuration operates similarly to the Rankine cycle system 2 of FIG. 2.

However, the first evaporator 4110 of the thermal power unit 4100 receives the thermal energy of the inlet gas introduced into the compressor 2470 through the second heat transfer line 4500.

5 shows a Rankine cycle system 5 according to a fifth embodiment of the invention.

Referring to FIG. 5, the Rankine cycle system 5 includes a thermal power unit 5100, an absorption chiller 5200, an engine exhaust system 5400, and a second heat transfer line 5500.

The first evaporator 5110 of the thermal power unit 5100, the first turbine 5120, the first condenser 5130, and the pump 5140 may include the first evaporator 1110 of the thermal power unit 1110 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1140. The regenerator 5210, the second condenser 5220, the second evaporator 5230 and the absorber 5240 of the absorption chiller 5200 are the regenerator 1210 and the second condenser 1220 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240. The exhaust line 5410, the second turbine 5430, the first heat exchanger 5450, the compressor 5470 and the first cooler 5490 of the engine exhaust system 5400 are connected to the engine exhaust system 2400 of FIG. 2. The exhaust line 2410, the second turbine 2430, the first heat exchanger 2450, the compressor 2470, and the first cooler 2490 are provided in a similar configuration.

The second heat transfer line 5500 heat-exchanges the second heat transfer fluid flowing therein with the exhaust gas flowing through the first heat exchanger 5450 and the working fluid flowing through the first evaporator 5110, to the first cooler 5490. Heat exchange with the flowing inlet gas and the working fluid flowing through the first evaporator 5110.

The second heat transfer line 5500 includes a first circulation line 5510 and a second circulation line 5520.

The first circulation line 5510 is formed by connecting the first heat exchange line 5542 of the first heat exchanger 5450 and the heat source line 5112 of the first evaporator 5110.

The second circulation line 5520 is formed by connecting the first cooling line 5552 of the first cooler 5490 and the heat source line 2112 of the first evaporator 2110.

Therefore, the second heat transfer fluid supplied with the heat energy of the exhaust gas and the heat energy of the inlet gas respectively supplies heat energy to the working fluid in the first evaporator 5110.

The Rankine cycle system 5 having such a configuration operates similarly to the Rankine cycle system 2 of FIG. 2.

However, the first evaporator 5110 of the thermal power unit 5100 receives the thermal energy of the exhaust gas of the engine 10 through the first circulation line 5510, and the compressor 5470 through the second circulation line 5520. ) Is supplied with thermal energy of inlet gas.

6 shows a Rankine cycle system 5 according to a sixth embodiment of the invention.

Referring to FIG. 6, the Rankine cycle system 6 includes a thermal power unit 6100 and an absorption chiller 6200.

The first evaporator 6110, the first turbine 6120, the first condenser 6130 and the pump 6140 of the thermal power unit 6100 may include the first evaporator 1110 of the thermal power unit 1100 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1140. The regenerator 6210, the second condenser 6220, the second evaporator 6230 and the absorber 6240 of the absorption chiller 6200 are the regenerator 1210 and the second condenser 1220 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240.

The Rankine cycle system 6 having such a configuration operates similarly to the Rankine cycle system 1 of FIG. 1.

However, the first heat exchange fluid introduced into the second evaporator 6230 through the evaporation line 6322 is supplied with heat energy to the refrigerant 6242 and cooled. The cooled first heat exchange fluid can be used in various cooling systems 6900. According to one example, it may be used in a cabin cooling system of a ship, a scavenging air cooling system of a engine, or a chiller system.

7 shows a Rankine cycle system 7 according to a seventh embodiment of the invention.

Referring to FIG. 7, the Rankine cycle system 7 includes a thermal power unit 7100, an absorption chiller 7200, and a first heat transfer line 7300.

The first evaporator 7110 of the thermal power unit 7100, the first turbine 7120, the first condenser 7130 and the pump 7140 may include the first evaporator 1110 of the thermal power unit 1100 of FIG. 1, It is provided in a similar configuration to the first turbine 1120, the first condenser 1130 and the pump 1140. The regenerator 7210, the second condenser 7220, the second evaporator 7230 and the absorber 7240 of the absorption chiller 7200 are the regenerator 1210 and the second condenser 1220 of the absorption chiller 1200 of FIG. 1. , Second evaporator 1230 and absorber 1240. The first heat transfer line 7300 is provided in a configuration similar to the first heat transfer line 1300 of FIG. 1.

However, in the Rankine cycle system 7, unlike the Rankine cycle system 1 of FIG. 1, the second flow line 7714 connecting the first turbine 7120 and the first condenser 7130 may be formed in the absorption chiller 7200. It is not connected to player 7210. Regenerator 7210 receives thermal energy from an external heat source, not the working fluid of second flow line 7714, to heat mixture 7260.

8 shows a Rankine cycle system 8 according to an eighth embodiment of the invention.

Referring to FIG. 8, the Rankine cycle system 8 includes a thermal power unit 8100, an absorption chiller 8200, an engine exhaust system 8400, a first heat transfer line 8300, a second heat transfer line 8500, and a second heat transfer line 8400. Three heat transfer lines 8600.

The first evaporator 8110, the first turbine 8120, the first condenser 8130 and the pump 8140 of the thermal power unit 8100 may include the first evaporator 7110 of the thermal power unit 7100 of FIG. 7, It is provided in a similar configuration to the first turbine 7120, the first condenser 7130 and the pump 7140. The regenerator 8210, the second condenser 8220, the second evaporator 8230, and the absorber 8240 of the absorption chiller 8200 are the regenerator 7210 and the second condenser 7220 of the absorption chiller 7200 of FIG. 7. , A second evaporator 7230 and an absorber 7240. The first heat transfer line 8300 and the second heat transfer line 8500 are provided in a similar configuration to the first heat transfer line 2300 and the second heat transfer line 2500 of FIG. 2.

The engine exhaust system 8400 includes an exhaust line 8410, a second turbine 8430, a first heat exchanger 8450, a second heat exchanger 8840, a compressor 8070, a first cooler 8290, and a second A cooler 8280. The exhaust gas flowing out of the engine 10 is discharged through the exhaust line 8410 via the second turbine 8230, the second heat exchanger 8440, and the first heat exchanger 8450.

The exhaust line 8410, the second turbine 8430, the first heat exchanger 8450, the compressor 8070, and the first cooler 8290 of the engine exhaust system 8400 are provided in the engine exhaust system 2400 of FIG. 2. The exhaust line 2410, the second turbine 2430, the first heat exchanger 2450, the compressor 2470, and the first cooler 2490 are provided in a similar configuration.

The second heat exchanger 8440 is connected to the exhaust line 8410. A second heat exchange line 8424 is provided in the second heat exchanger 8440 through which a third heat transfer fluid flows. The exhaust gas flowing through the second heat exchanger 8440 through the exhaust line 8410 supplies thermal energy to the third heat transfer fluid in the second heat exchange line 8442.

The second cooler 8280 cools the inlet gas cooled by the first cooler 8490. The second cooler 8280 is provided with a second cooling line 8848 for supplying a fourth heat transfer fluid. The fourth heat transfer fluid introduced into the second cooling line 8848 absorbs the thermal energy of the inlet gas. The inlet gas is cooled by the fourth heat transfer fluid.

The third heat transfer line 8600 is provided to allow the third heat transfer fluid flowing therein to heat exchange with the mixture 8260 of the exhaust gas and the regenerator 8210 flowing through the second heat exchanger 8240. That is, the third heat transfer line 8600 connects the second heat exchange line 8242 of the second heat exchanger 8440 of the engine exhaust system 8400 and the heat source line 8212 of the regenerator 8210 of the absorption chiller 8200. It is formed by connecting. The third heat transfer fluid supplied with heat energy from the exhaust gas supplies heat energy to the mixture 8260 in the regenerator 8210.

The regenerator 8210 of the absorption refrigerator 8200 receives the thermal energy of the exhaust gas flowing through the second heat exchanger 8440 to heat the mixture 8260.

9 shows a Rankine cycle system 9 according to a ninth embodiment of the invention.

9, the Rankine cycle system 9 includes a thermal power unit 9100, an absorption chiller 9200, an engine exhaust system 9400, a first heat transfer line 9300, a second heat transfer line 9500, and Four heat transfer lines 9700.

The first evaporator 9110, the first turbine 9120, the first condenser 9130 and the pump 9140 of the thermal power unit 9100 may include the first evaporator 7110 of the thermal power unit 7100 of FIG. 7, It is provided in a similar configuration to the first turbine 7120, the first condenser 7130 and the pump 7140.

Regenerator 9210, second condenser 9220, second evaporator 9230 and absorber 9240 of absorption chiller 9200 are regenerator 7210 and second condenser 7220 of absorption chiller 7200 of FIG. 7. , A second evaporator 7230 and an absorber 7240.

The first heat transfer line 9300 and the second heat transfer line 9500 are provided in a similar configuration to the first heat transfer line 8300 and the second heat transfer line 8500 of FIG. 8.

Exhaust line 9410, second turbine 9430, first heat exchanger 9450, second heat exchanger 9440, compressor 9706, first cooler 9490, and second of engine exhaust system 9400. The cooler 9480 may include an exhaust line 8410, a second turbine 8430, a first heat exchanger 8450, a second heat exchanger 8440, a compressor 8070, and a second exhaust line 8410 of the engine exhaust system 8400 of FIG. 8. It is provided in a similar configuration as the first cooler 8490 and the second cooler 8280.

Fourth heat transfer line 9700 is provided such that a fourth heat transfer fluid flowing therein heat exchanges with a mixture 8260 of inlet gas and regenerator 8210 flowing through second cooler 9180. That is, the fourth heat transfer line 9700 is formed by connecting the second cooling line 9482 of the second cooler 9180 and the heat source line 9212 of the regenerator 9210. The fourth heat transfer fluid supplied with thermal energy from the inlet gas supplies thermal energy to the mixture in the regenerator 9210.

The Rankine cycle system 9 having such a configuration operates similarly to the Rankine cycle system 7 of FIG. 7.

However, the first evaporator 9110 of the thermal power unit 9100 receives the heat energy of the exhaust gas of the engine 10 and the inlet gas introduced into the compressor 9470 through the second heat transfer line 9500.

In addition, the regenerator 9210 of the absorption chiller 9200 receives the thermal energy of the inlet gas flowing in the second cooler 9180 to heat the mixture 9260.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 to 9 Rankine Cycle Systems
1100 to 9100 thermal power unit
1200 to 9200 Absorption Chiller
1300-4300, 7300-9300 First Heat Transfer Line
2400 to 4400, 6400, 8400 and 9400 engine exhaust systems
2500, 3500, 6500, 8500 and 9500 Second Heat Transfer Line
8600 3rd Heat Transfer Line
9700 4th Heat Transfer Line

Claims (9)

A thermal power unit, to which the first evaporator, the first turbine, the first condenser and the pump are sequentially connected in a flow line;
A regenerator, a second condenser, a second evaporator and an absorber, in which the absorber is connected to each other so that an absorbent, a refrigerant or a mixture of the absorbent and the refrigerant flows;
A line connecting said first turbine and said first condenser of said flow line is provided such that a working fluid flowing therein heats said mixture in said regenerator. The method of claim 1,
Further comprising a first heat transfer line through which the first heat transfer fluid flows,
And the first heat transfer line is provided so that the first heat transfer fluid exchanges heat with the working fluid flowing through the first condenser and the refrigerant flowing through the second evaporator. The method of claim 1,
The second evaporator includes an evaporation line through which the first heat transfer fluid flows,
The evaporation line is provided such that the first heat transfer fluid exchanges heat with the refrigerant flowing through the second evaporator and an external cooling system. The method of claim 1,
The first evaporator includes a heat source line for supplying thermal energy into the first evaporator,
Rankine cycle system for supplying heat energy to the heat source line is the exhaust gas of the engine. The method of claim 1,
An engine exhaust system including an exhaust line for exhausting exhaust gas of an engine, and a first heat exchanger connected to the exhaust line;
A second heat transfer line through which the second heat transfer fluid flows;
The second heat transfer line is provided such that the second heat transfer fluid exchanges heat with the working fluid flowing through the first evaporator and the exhaust gas flowing through the first heat exchanger. The method of claim 1,
An exhaust line for discharging the exhaust gas of the engine, a second turbine connected to the exhaust line to expand the exhaust gas, and a compressor connected to the second turbine to compress the inlet gas by using energy generated by the second turbine And a first cooler for cooling the inlet gas compressed by the compressor;
A second heat transfer line through which the second heat transfer fluid flows;
The second heat transfer line is provided such that the second heat transfer fluid exchanges heat with the working fluid flowing through the first evaporator and the inlet gas flowing through the first cooler. The method of claim 1,
An exhaust line for discharging exhaust gas of an engine, a second turbine connected to the exhaust line to expand the exhaust gas, a first heat exchanger connected to the exhaust line, and a second turbine connected to the second turbine An engine exhaust system comprising a compressor for compressing the inlet gas using energy and a first cooler for cooling the inlet gas compressed by the compressor; And
A second heat transfer line through which the second heat transfer fluid flows;
And the second heat transfer line is provided such that the second heat transfer fluid heat exchanges with the working fluid flowing through the first evaporator, the exhaust gas flowing through the first heat exchanger and the inlet gas flowing through the first cooler, respectively. The method of claim 7, wherein
The second heat transfer line
A heat source line connected to the first evaporator;
A first heat exchange line connected to the first heat exchanger; And
A first cooling line connected to the first cooler,
A Rankine cycle system in which said first heat exchange line and said first cooling line are commonly connected to said heat source line. Engine and
10. Ship having a Rankine cycle system according to any of the preceding claims.

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