EP3275777A1 - Method of operating a refrigeration system of a ship - Google Patents
Method of operating a refrigeration system of a ship Download PDFInfo
- Publication number
- EP3275777A1 EP3275777A1 EP17165174.8A EP17165174A EP3275777A1 EP 3275777 A1 EP3275777 A1 EP 3275777A1 EP 17165174 A EP17165174 A EP 17165174A EP 3275777 A1 EP3275777 A1 EP 3275777A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling water
- water circuit
- seawater
- heat exchanger
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
- F01P3/207—Cooling circuits not specific to a single part of engine or machine liquid-to-liquid heat-exchanging relative to marine vessels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2002/005—Intakes for coolant medium other than sea chests, e.g. for ambient water
Definitions
- the invention relates to a method for operating a cooling system of a ship.
- a cooling system 10 of a ship has a seawater subsystem 11 with a seawater pump 14 and at least one cooling water circuit 13 with a cooling water pump 28.
- the seawater subsystem 11 and the cooling water circuit 13 are coupled via a heat exchanger 12 in such a way that in the region of the heat exchanger 12, the cooling water of the first cooling water circuit 13 is cooled by the seawater of the seawater subsystem 12.
- the first cooling water circuit 13 has a bypass 17 to the seawater subsystem 11 and the first cooling water circuit 13 coupling heat exchanger 12 and a control valve 18, the position determines which cooling water content of the first cooling water circuit 13 via the heat exchanger 12 and which cooling water content of the first cooling water circuit 13 via the bypass 17 is conducted on.
- the position of the control valve 18 is changed by an actuator 19 and determined by a controller 41 such that a Vorlaufkühlementtemperatur, which adjusts by mixing the guided through the heat exchanger 12 cooling water content and the guided over the bypass 17 cooling water content, a corresponding desired value equivalent.
- the cooling water can be fed to a module 42 to be cooled.
- an actual value of the supply water temperature is detected by a sensor 43, wherein depending on the actual value of the supply water temperature of the controller 41, the position of the control valve 18 is influenced by the actuator 19.
- the seawater pump 14 of the seawater distribution system 11 and the cooling water pump 28 of the first cooling water circuit 13 are operated at full speed in known from practice cooling systems of a ship. This requires a relatively large amount of energy.
- the present invention has the object to provide a novel method for operating a cooling system of a ship.
- the speed of the seawater pump of the seawater distribution system is controlled depending on the position of the control valve of the first cooling water circuit, whose position determines which part of the first cooling water cooling water circuit via the heat exchanger and which cooling water content of the first cooling water circuit is passed through the bypass.
- the position of that control valve of the first cooling water circuit is used, which determines which part of the first cooling water cooling water circuit via the heat exchanger and which cooling water portion of the first cooling water circuit is passed through the bypass.
- the known from practice control for this control valve of the first cooling water circuit depending on the actual value of the supply water temperature remains active.
- the control concept according to the invention has the advantage that energy can be saved by varying the speed of the seawater pump.
- the control concept is particularly suitable for use in such cooling systems, in which the heat exchanger, which couples the seawater subsystem and the first cooling water circuit with each other, is not designed as a central heat exchanger.
- the speed of the seawater pump of the seawater distribution system is controlled depending on the position of this control valve of the first cooling water circuit, that the guided over the heat exchanger cooling water content of the first cooling water circuit is as large as possible and is thus approximated toward a corresponding desired value. Then, if as much cooling water is passed over the heat exchanger, so if the guided over the heat exchanger cooling water portion of the first cooling water circuit is as large as possible, the speed of the seawater pump can be lowered more, so more energy can be saved.
- the speed of the seawater pump of the seawater distribution system is further regulated depending on the temperature of the seawater downstream of the heat exchanger, preferably such that when the temperature of the seawater downstream of the heat exchanger is greater than a limit, the speed of the seawater pump is increased, so that the temperature of the seawater becomes smaller than or equal to the limit value. This prevents the formation of salt deposits in the cooler or in parts of the cooling system.
- the cooling system comprises a second cooling water circuit, wherein the second cooling water circuit and the seawater subsystem or the second cooling water circuit and the first cooling water circuit are coupled via a heat exchanger, in the region of the cooling water of the second cooling water circuit through the seawater of the seawater subsystem or the cooling water of the first Cooling water circuit is cooled.
- the second cooling water circuit comprises a bypass to the second cooling water circuit and the seawater subsystem or the second cooling water circuit and the first cooling water circuit coupling heat exchanger and a control valve, is determined by the position of which cooling water content of the second cooling water circuit via the heat exchanger and which cooling water content of the second cooling water circuit on the Bypass is performed.
- the position of the control valve of the second cooling water circuit is determined such that a return cooling water temperature upstream of the heat exchanger corresponds to a corresponding desired value.
- the speed of the seawater pump of the seawater distribution system is further regulated depending on the position of the control valve of the second cooling water circuit, preferably such that on the one hand, the guided over the heat exchanger of the first cooling water circuit cooling water content of the first cooling water circuit is as large as possible and is thus approximated towards a corresponding setpoint, and that on the other hand, the guided over the heat exchanger of the second cooling water circuit cooling water content of the second cooling water circuit is as large as possible and is thus approximated in the direction of a corresponding desired value.
- This development of the invention has the advantage that the speed of the seawater pump can be controlled even more advantageous and the potential of energy savings while maintaining good cooling can be better exploited.
- the first cooling water circuit comprises a cooling water pump, a low-temperature charge air cooler, at least one cooler for cooling at least one further assembly, and a further control valve, via whose switching position a guided via the Niedertemperaturladeluftkühler cooling water portion of the first cooling water circuit is adjustable.
- the speed of the cooling water pump of the first cooling water circuit is controlled depending on the position of the or each control valve of the first cooling water circuit, preferably such that the guided over the Niedertemperaturladeluftkühler cooling water content of the first cooling water circuit is as large as possible and is thus approximated towards a corresponding setpoint.
- the first cooling water circuit comprises a cooling water pump, a low-temperature charge air cooler, a high-temperature charge air cooler at least one cooler for cooling at least one further assembly, and a further control valve, via its switching position via the Niedertemperaturladf Kunststoffkühler guided cooling water content and a guided over the high-temperature charge air cooler cooling water content is adjustable.
- a speed of the cooling water pump of the first cooling water circuit is then regulated depending on the position of this control valve of the first cooling water circuit, preferably such that the guided over the high-temperature charge air cooler cooling water content is as large as possible and is thus approximated towards a corresponding desired value.
- This variant also allows effective control of the speed of the seawater pump and the speed of the cooling water pump of the first cooling water circuit for optimal energy savings while maintaining the necessary cooling function.
- the present invention relates to a method of operating a cooling system of a ship.
- Fig. 1 shows a section of a cooling system 10 of a ship in the region of a seawater subsystem 11 of the cooling system 10 and a coupled to the seawater subsystem 11 via a heat exchanger 12 first cooling water circuit 13 of the cooling system 10th
- the seawater subsystem 11 has a seawater pump or at least one seawater pump, in the illustrated embodiment via two seawater pumps 14a, 14b, which are each driven by an actuator 15a, 15b.
- the seawater pumps 14a, 14b of the seawater subsystem 11 can be removed from seawater tanks 16a, 16b seawater and conveyed through the heat exchanger 12, which couples the seawater subsystem 11 with the first cooling water circuit 13.
- first cooling water circuit 13 cooling water is conveyed to Fig. 1 Not shown assemblies of the ship to cool, wherein the cooling water of the first cooling water circuit 13 is cooled in the region of the heat exchanger 12 by means of the guided also via the heat exchanger 12 seawater of the seawater subsystem 11.
- the first cooling water circuit 13 has a bypass 17 to the seawater subsystem 11 and the first cooling water circuit 13 coupling heat exchanger 12 and a control valve 18, which is designed in the illustrated embodiment as a three-way control valve and whose position can be changed via an actuator 19.
- the position of the control valve 18 of the first cooling water circuit 13 determines which part of the cooling water of the first cooling water circuit 13 is conducted via the heat exchanger 12 and which part of the cooling water of the first cooling water circuit 13 via the bypass 17. Accordingly, in the region of the control valve 18, cooling water passed through the heat exchanger 12 and cooling water passed through the bypass 17 are mixed, whereby an actual value of a supply water temperature adjusts downstream of the control valve 18, depending on the mixture of the cooling water fraction passed through the heat exchanger 12 and the guided over the bypass 17 cooling water content. The position of the control valve 18 is adjusted via the actuator 19 such that the actual value of the supply water temperature corresponds to a corresponding predetermined target value.
- the speed of the seawater pump in Fig. 1 the speed of the seawater pump 14a and / or the speed of the seawater pump 14b, depending on the position of the control valve 18 of the first cooling water circuit 13, is determined by its position, which cooling water content of the first cooling water circuit 13 via the heat exchanger 12 and which cooling water content of the first cooling water circuit 13 via the bypass 17 is guided, regulated.
- the position of the valve 18 is used to control the seawater pump 14a and / or 14b which is known from practice.
- the control of the control valve 18 known from practice ie the regulation of the actual value of the supply water temperature via the control valve 18, remains active.
- the speed of the seawater pump 14a and / or 14b depending on the position of the control valve 18 of the first cooling water circuit 13 is controlled such that the guided over the heat exchanger 12 cooling water content of the first cooling water circuit 13 is as large as possible and thus towards a corresponding target value is approximated.
- the amount of seawater passed through the heat exchanger 12 is reduced, thereby indirectly increasing the cooling water content of the first cooling water circuit 13 via the heat exchanger 12.
- the temperature of the seawater downstream of the heat exchanger 12 may be further considered. Then, when the temperature of the seawater downstream of the heat exchanger 12 becomes larger than a predetermined limit, the rotational speed of the seawater pump 14a and / or 14b is increased, so that the temperature of the seawater downstream of the heat exchanger 12 becomes smaller than or equal to this limit.
- both seawater pumps 14a, 14b are designed as controllable in terms of their speed pumps, then the speed of both seawater pumps 14a and 14b can be controlled in the above manner.
- one of the seawater pumps 14a or 14b is designed as a constant displacement pump, in which case only the speed of the other seawater pump 14b or 14a is regulated in the above manner.
- Fig. 2 shows a modification of the cooling system 10 of Fig. 1 , wherein the cooling system 10 of the Fig. 2 in addition to the first cooling water circuit 13 comprises a second cooling water circuit 20.
- the second cooling water circuit 20 is also coupled via a heat exchanger 21 to the seawater subsystem 12, in such a way that in the region of the heat exchanger 21, the cooling water of the second cooling water circuit 20 is cooled by the seawater of the seawater subsystem 12, wherein the two heat exchangers 12, 21, on which the two cooling water circuits 13, 20 are coupled to the seawater subsystem 12, are connected in series such that the seawater of the seawater subsystem 11 first via the heat exchanger 12, which couples the seawater subsystem 11 and the first cooling circuit 13, and then via the heat exchanger 21st , which couples the seawater distribution system 11 and the second cooling circuit 20, is guided.
- the second cooling circuit 20 has as well as the first cooling circuit 13 via a bypass 22 and a control valve 23.
- the position of the control valve 23 of the second cooling water circuit 20 can be changed via an actuator.
- the position of the control valve 23 of the second cooling water circuit 20 determines which part of the cooling water of the second cooling water circuit 20 is passed through the heat exchanger 21, and which cooling water content of the second cooling water circuit 20 is passed through the bypass 22 to the heat exchanger 21.
- the position of the control valve 23 is preferably determined such that a return temperature upstream of the heat exchanger 21 of the cooling water of the second cooling water circuit 20 corresponds to a corresponding predetermined target value.
- the speed of the seawater pump 14a and / or 14b not only depends on the position of the control valve 19 of the first cooling water circuit 13, but additionally determined depending on the position of the control valve 23 of the second cooling water circuit 20.
- the speed of the seawater pump 14a and / or 14b is controlled such that on the one hand the guided over the heat exchanger 12 of the first cooling water circuit 13 cooling water content of the first cooling water circuit 13 is as large as possible and is thus approximated in the direction of the corresponding desired value, and that on the other the guided over the heat exchanger 21 of the second cooling water circuit 20 cooling water content of the second cooling water circuit 20 is as large as possible and is thus approximated towards a corresponding target value.
- the second cooling water circuit 20 As already described in connection with the first cooling water circuit 13, it is also provided for the second cooling water circuit 20, always a minimum amount of cooling water through the bypass 22 to lead, so that the corresponding target value for the guided over the heat exchanger 21 cooling water content of the second cooling water circuit 20 smaller than 100%.
- the temperature of the seawater is taken into account in the regulation of the speed of the seawater pump 14a and / or the seawater pump 14b
- the temperature of the seawater downstream of the two heat exchangers 12 and 21, that is immediately downstream of the heat exchanger 21 is taken into account in the regulation of the speed of the seawater pump 14a and / or the seawater pump 14b
- the temperature of the seawater downstream of the two heat exchangers 12 and 21, that is immediately downstream of the heat exchanger 21 is higher than a limit
- the speed of the seawater pump 14a and / or the seawater pump 14b is increased, so that the temperature the seawater in turn becomes smaller than or equal to the respective limit value.
- Fig. 3 shows a development of the cooling system 10 of Fig. 2 , where in Fig. 3 in addition to the in Fig. 2 shown assemblies further assemblies are shown, in particular an internal combustion engine 25 to be cooled, which is associated with a low-temperature charge air cooler 26 and a high-temperature charge air cooler 27.
- the low-temperature charge air cooler 26 is integrated in the first cooling circuit 13 and the high-temperature charge air cooler 27 in the second temperature circuit 20.
- a cooling water pump namely at least one cooling water pump, in the illustrated embodiment, two cooling water pumps 28a, 28b, which are each driven by an actuator 29a, 29b and serve to circulate the cooling water in the first cooling water circuit 13.
- Fig. 2 shows a cooling water pump, namely at least one cooling water pump, in the illustrated embodiment, two cooling water pumps 28a, 28b, which are each driven by an actuator 29a, 29b and serve to circulate the cooling water in the first cooling water circuit 13. Further shows Fig.
- a further control valve 30 whose position is influenced by an actuator 31, and a further radiator 32, which is designed in particular as a lubricating oil cooler for cooling the lubricating oil for the internal combustion engine 25.
- a cooling water pump 33 with an actuator 39, which serves to circulate the coolant in the second cooling circuit 20.
- the control of the speed of the seawater pump 14a and / or 14b as in connection with Fig. 2 described depending on the position of the switching valve 18 of the first cooling water circuit 13 and depending on the position of the switching valve 23 of the second cooling water circuit 20 and optionally depending on the temperature of the seawater downstream of the heat exchanger 21st
- the speed of the cooling water pump 28a and / or 28b is controlled, depending on the position of the two switching valves 18 and 30 of the first cooling water circuit 13.
- the position for the control valve 18 is determined such that downstream of the control valve 18th sets a desired actual value of the supply water temperature.
- the guided over the Niedertemperaturladeluftkühler 26 cooling water content of the first cooling water circuit 13 is set and then that portion of the Niedertemperaturladeluftkühler 26 is passed.
- the cooling water components passed over via the low-temperature charge air cooler 26 and at the same are mixed again, in order then to be guided via the radiator 32, which is guided as a lubricating oil cooler, for cooling the lubricating oil.
- the speed of the cooling water pump 28a and / or 28b is determined depending on the switching position of the switching valves 18 and 30 that as much water as possible is passed through the low-temperature charge air cooler 26, that is, the cooling water portion of the first cooling water circuit 13 routed via the low-temperature charge air cooler 26 is as large as possible and so that it is approximated towards a corresponding desired value.
- not the entire amount of cooling water conveyed via the cooling water pump 28a and / or 28b is conducted via the low-temperature charge air cooler 26, but it is ensured that a minimum proportion of cooling water of this cooling water of the first cooling water circuit 13 is always passed through a bypass 34 to the low-temperature charge air cooler 26.
- cooler 32 In the regulation of the rotational speed of the cooling water pump 28a and / or 28b, the temperature of the cooled medium in the cooler 32, ie in Fig. 3 the cooled in the cooler 32 lubricating oil, taken into account. Should the temperature of the lubricating oil leaving the radiator 32 become greater than a limit, the speed of the cooling water pump 28a and / or 28b is increased, until the temperature of the lubricating oil leaving the radiator 32 falls below its limit or the same.
- further coolers for cooling a medium may be installed in the first cooling circuit 13, for example a cooler for an auxiliary drive unit and / or a cooler for an air conditioning system and / or a cooler for an injection nozzle cooling system.
- the temperature of each medium to be cooled in the respective cooler is then preferably monitored and compared with a corresponding limit value, wherein when a corresponding limit value is exceeded, the rotational speed of the coolant pump 28a and / or 28b is increased in order to achieve a temperature in the region of the respective cooler to ensure proper cooling of the respective medium to be cooled.
- both cooling water pumps 28a and 28b may be controllable cooling water pumps, and then both cooling water pumps 28a and 28b may be regulated with respect to their rotational speed in the manner described above.
- the rotational speed of the cooling water pump 33 of the second cooling water circuit 20 can be regulated, depending on the cooling requirement of the internal combustion engine 25.
- Fig. 4 shows a modification of the cooling system 10 of Fig. 3 , wherein the cooling system 10 of the Fig. 4 from the cooling system 10 of Fig. 3 differs in that the second heat exchanger 21, which serves to cool the cooling water of the second cooling circuit 20 is not coupled to the seawater subsystem 11, but rather with the first cooling circuit 13. So can Fig. 4 can be taken that downstream of the cooling water pump 28a and 28b coolant of the first cooling circuit 13 is supplied via the line 35 to the heat exchanger 21 to cool in the region of the heat exchanger 21, the cooling water of the second cooling circuit 20.
- cooling water of the first cooling circuit 13 is returned to the cooling circuit 13, downstream of the radiator 32 and upstream of the heat exchanger 12, namely upstream of the bypass 17.
- cooling system 10 of Fig. 4 the control of the speed of the seawater pumps 14a and / or 14b of the seawater distribution system 11 preferably takes place as described in connection with FIG Fig. 1 described.
- the control of the rotational speed of the cooling water pump 28a and / or 28b of the first cooling water circuit 13 is not only dependent on the switching position of the switching valves 19 and 30 of the first cooling circuit 13, but also depending on the switching position of the control valve 23 of the second cooling circuit 20.
- the speed the cooling water pump 28a and / or 28b adjusted so that as much cooling water and thus the highest possible proportion of cooling water of the second cooling circuit 20 is passed through the heat exchanger 21.
- the speed of the cooling water pump 28a and / or 28b of the first cooling circuit 13 is reduced accordingly, so that less cooling water of the first cooling circuit 13 is passed through the heat exchanger 21, which ultimately leads to an increase in the guided through the heat exchanger 21 cooling water amount of the second cooling circuit 20.
- a minimum proportion of cooling water of the second cooling circuit 20 is preferably again guided via the bypass 22 of the second cooling circuit 20.
- the speed of the cooling water pump 28a and / or 28b is reduced only so far that the guided over the heat exchanger 21 cooling water content of the second cooling water circuit 20 reaches its maximum desired value corresponding to a maximum value of less than 100%, and therefore on the Bypass 22 the leadership of a minimum amount of cooling water or a minimum proportion of cooling water is maintained.
- the rotational speed of the cooling water pump 33 of the second cooling water circuit 20 can be regulated again according to the needs of the internal combustion engine 25.
- Fig. 5 shows a further modification of a cooling water system of a ship, wherein the cooling water system 10 of the Fig. 5 from the cooling water system 10 of Fig. 4 differs in that only a single cooling water circuit, ie first cooling water circuit 13 is present, so that the separate second cooling water circuit 20 is omitted.
- the flow cooling water temperature downstream of the control valve 18 is adjusted by leading the cooling water of the first cooling water circuit 13 partly through the heat exchanger 12 and partially through the bypass 17 to the heat exchanger 12, the heat exchanger 12 cooling the seawater subsystem 11 the cooling water of the cooling circuit 13 with the first cooling circuit 13 couples.
- the cooling water pump 28a and / or 28b conveys the cooling water of the first cooling water circuit 13, starting from this flow, wherein the switching position of the control valve 30 determines which proportion of cooling water is passed through the low-temperature charge air cooler 26, and what proportion of the low-temperature charge air cooler 26 passed over the radiator 32. Downstream of the radiator 32, the cooling water of the first cooling circuit 13 is divided into a proportion of cooling water, which is guided by means of the pump 36 via the high-temperature charge air cooler 27, and in a cooling water portion, the past the high-temperature charge air cooler 27 directly into the return in the direction the heat exchanger 12 is passed.
- a control valve 37 which is adjustable by an actuator 38, thereby determines these two parts of the cooling water, ie that portion of cooling water, which is guided by means of the pump 36 via the high-temperature charge air cooler 27, as well as those cooling water content, which is guided past the high-temperature charge air cooler 27.
- the regulation of the speed of the seawater pump 14a and / or 14b of the seawater subsystem 11 takes place in Fig. 5 as related to Fig. 1 described.
- the control of the rotational speed of the cooling water pump 28a and / or 28b of the first cooling circuit 13 is dependent on the position of the control valves 18 and / or 30 and / or 37, in such a way that via a corresponding adjustment of the rotational speed of the cooling water pump 28a and / or 28b It is ensured that as much cooling water and thus the highest possible proportion of cooling water is conducted via the high-temperature charge air cooler 27. However, again, a minimum proportion of cooling water is conducted past the high-temperature charge air cooler 27.
- the cooling water pump 36 can be controlled depending on the needs of the internal combustion engine 25 in terms of their speed.
- the cooling water pumps 28a, 28b, 33 and 36 are each electric motor driven cooling water pumps.
- the delivery rate of the corresponding pump can be regulated. This is preferred.
- mechanically driven cooling water pumps 28a, 28b, 33, 36 can be used, in which case chokes are integrated in the cooling circuit, which are adjusted accordingly via the control.
- Fig. 1 to 5 described embodiments of Fig. 1 to 5 is common in each case that, as in Fig. 7 shown, the known from the practice control of the position of the control valve 18 is maintained depending on the actual value of the supply water temperature.
- the position of the control valve 18 of the first cooling water circuit 13 is determined by its position, which cooling water content of the first cooling water circuit 13 via the heat exchanger 12 and which cooling water content of the first cooling water circuit 13 via the bypass 17 is performed by the controller 41, the speed of one or at least one seawater pump 14 regulated.
- the speed of one or at least one cooling water pump 28 of the cooling water circuit 13 is preferably additionally regulated by the controller 41, and also depending on the position of the control valve 18.
- the speed of the seawater pump 14 and / or the cooling water pump 28 can be reduced, thereby saving energy can be.
- the procedure is fully automatic.
Abstract
Verfahren zum Betreiben eines Kühlsystems (10) eines Schiffs, wobei das Kühlsystem (10) ein Seewasserteilsystem (11) mit einer Seewasserpumpe (14a, 14b) und zumindest einen ersten Kühlwasserkreislauf (13) umfasst; wobei das Seewasserteilsystem (11) und der erste Kühlwasserkreislauf (13) über einen Wärmetauscher (12) derart gekoppelt sind, dass im Bereich des Wärmetauschers (12) das Kühlwasser des ersten Kühlwasserkreislaufs (13) durch das Seewasser des Seewasserteilsystems (11) gekühlt wird; und wobei der erste Kühlwasserkreislauf (13) einen Bypass (17) zu dem das Seewasserteilsystem (11) und den ersten Kühlwasserkreislauf (13) koppelnden Wärmetauscher (12) und ein Stellventil (18) aufweist, über dessen Stellung bestimmt wird, welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs (13) über den Wärmetauscher (12) und welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs (13) über den Bypass (17) geführt wird, wobei die Stellung des Stellventils (18) derart geregelt wird, dass eine Vorlaufkühlwassertemperatur, die sich durch Mischung des über den Wärmetauscher (12) geführten Kühlwasseranteils und des über den Bypass (17) geführten Kühlwasseranteils einstellt, einem entsprechenden Sollwert entspricht. Die Drehzahl der Seewasserpumpe (14a, 14b) des Seewasserteilsystems (11) wird abhängig von der Stellung des Stellventils (18) des ersten Kühlwasserkreislaufs (13), über dessen Stellung bestimmt wird, welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs (13) über den Wärmetauscher (12) und welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs (13) über den Bypass (17) geführt wird, geregelt.A method of operating a cooling system (10) of a ship, said cooling system (10) comprising a seawater subsystem (11) having a seawater pump (14a, 14b) and at least one first cooling water circuit (13); wherein the seawater subsystem (11) and the first cooling water circuit (13) are coupled via a heat exchanger (12) such that in the region of the heat exchanger (12) the cooling water of the first cooling water circuit (13) is cooled by the seawater of the seawater subsystem (11); and wherein the first cooling water circuit (13) has a bypass (17) to which the seawater subsystem (11) and the first cooling water circuit (13) coupling heat exchanger (12) and a control valve (18) is determined by its position, which cooling water content of the first Cooling water circuit (13) via the heat exchanger (12) and which cooling water portion of the first cooling water circuit (13) via the bypass (17) is guided, wherein the position of the control valve (18) is controlled such that a flow cooling water temperature, which by mixing the above adjusts the heat exchanger (12) guided cooling water content and of the bypass (17) guided cooling water content, corresponding to a corresponding desired value. The speed of the seawater pump (14a, 14b) of the seawater subsystem (11) is determined depending on the position of the control valve (18) of the first cooling water circuit (13), whose position determines which proportion of cooling water of the first cooling water circuit (13) via the heat exchanger (12 ) and which part of the cooling water of the first cooling water circuit (13) is guided via the bypass (17).
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Kühlsystems eines Schiffs.The invention relates to a method for operating a cooling system of a ship.
Der grundsätzliche Aufbau sowie die grundsätzliche Betriebsweise eines Kühlsystems eines Schiffs sind dem hier angesprochenen Fachmann aus der Praxis hinlänglich bekannt und schematisiert in
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein neuartiges Verfahren zum Betreiben eines Kühlsystems eines Schiffs zu schaffen.On this basis, the present invention has the object to provide a novel method for operating a cooling system of a ship.
Diese Aufgabe wird durch ein Verfahren zum Betreiben eines Kühlsystems eines Schiffs nach Anspruch 1 gelöst. Erfindungsgemäß wird die Drehzahl der Seewasserpumpe des Seewasserteilsystems abhängig von der Stellung des Stellventils des ersten Kühlwasserkreislaufs, über dessen Stellung bestimmt wird, welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs über den Wärmetauscher und welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs über den Bypass geführt wird, geregelt. Als primäre Regelgröße zur Regelung der Drehzahl der Seewasserpumpe des Seewasserteilsystems wird demnach die Stellung desjenigen Stellventils des ersten Kühlwasserkreislaufs genutzt, welches bestimmt, welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs über den Wärmetauscher und welcher Kühlwasseranteil des ersten Kühlwasserkreislaufs über den Bypass geführt wird. Die aus der Praxis bekannte Regelung für dieses Stellventil des ersten Kühlwasserkreislaufs abhängig vom Ist-Wert der Vorlaufkühlwassertemperatur bleibt weiterhin aktiv. Das erfindungsgemäße Regelkonzept verfügt über den Vorteil, dass durch Variation der Drehzahl der Seewasserpumpe Energie eingespart werden kann. Das Regelkonzept eignet sich insbesondere auch zum Einsatz bei solchen Kühlsystemen, bei welchen der Wärmetauscher, welcher das Seewasserteilsystem und den ersten Kühlwasserkreislauf miteinander koppelt, nicht als Zentralwärmetauscher ausgeführt ist.This object is achieved by a method for operating a cooling system of a ship according to
Vorzugsweise wird die Drehzahl der Seewasserpumpe des Seewasserteilsystems derart abhängig von der Stellung dieses Stellventils des ersten Kühlwasserkreislaufs geregelt, dass der über den Wärmetauscher geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs möglichst groß wird und damit in Richtung auf einen entsprechenden Sollwert angenähert wird. Dann, wenn möglichst viel Kühlwasser über den Wärmetauscher geführt wird, wenn also der über den Wärmetauscher geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs möglichst groß ist, kann die Drehzahl der Seewasserpumpe stärker abgesenkt werden, wodurch mehr Energie eingespart werden kann.Preferably, the speed of the seawater pump of the seawater distribution system is controlled depending on the position of this control valve of the first cooling water circuit, that the guided over the heat exchanger cooling water content of the first cooling water circuit is as large as possible and is thus approximated toward a corresponding desired value. Then, if as much cooling water is passed over the heat exchanger, so if the guided over the heat exchanger cooling water portion of the first cooling water circuit is as large as possible, the speed of the seawater pump can be lowered more, so more energy can be saved.
Nach einer vorteilhaften Weiterbildung wird die Drehzahl der Seewasserpumpe des Seewasserteilsystems weiterhin abhängig von der Temperatur des Seewassers stromabwärts des Wärmetauschers geregelt, vorzugsweise derart, dass dann, wenn die Temperatur des Seewassers stromabwärts des Wärmetauschers größer als ein Grenzwert wird, die Drehzahl der Seewasserpumpe erhöht wird, sodass die Temperatur des Seewassers kleiner als der Grenzwert wird oder demselben entspricht. Damit wird vermieden, dass sich im Kühler oder in Teilen des Kühlsystems Salzablagerungen festsetzen.According to an advantageous development, the speed of the seawater pump of the seawater distribution system is further regulated depending on the temperature of the seawater downstream of the heat exchanger, preferably such that when the temperature of the seawater downstream of the heat exchanger is greater than a limit, the speed of the seawater pump is increased, so that the temperature of the seawater becomes smaller than or equal to the limit value. This prevents the formation of salt deposits in the cooler or in parts of the cooling system.
Nach einer vorteilhaften Weiterbildung umfasst das Kühlsystem einen zweiten Kühlwasserkreislauf, wobei der zweite Kühlwasserkreislauf und das Seewasserteilsystem oder der zweite Kühlwasserkreislauf und der erste Kühlwasserkreislauf über einen Wärmetauscher gekoppelt sind, im Bereich dessen das Kühlwasser des zweiten Kühlwasserkreislaufs durch das Seewasser des Seewasserteilsystems oder das Kühlwasser des ersten Kühlwasserkreislaufs gekühlt wird. Der zweite Kühlwasserkreislauf umfasst einen Bypass zu dem den zweiten Kühlwasserkreislauf und das Seewasserteilsystem oder den zweiten Kühlwasserkreislauf und den ersten Kühlwasserkreislauf koppelnden Wärmetauscher und ein Stellventil, über dessen Stellung bestimmt wird, welcher Kühlwasseranteil des zweiten Kühlwasserkreislaufs über den Wärmetauscher und welcher Kühlwasseranteil des zweiten Kühlwasserkreislaufs über den Bypass geführt wird. Die Stellung des Stellventils des zweiten Kühlwasserkreislaufs wird derart bestimmt, dass eine Rücklaufkühlwassertemperatur stromaufwärts des Wärmetauschers einem entsprechenden Sollwert entspricht. Die Drehzahl der Seewasserpumpe des Seewasserteilsystems wird ferner abhängig von der Stellung des Stellventils des zweiten Kühlwasserkreislauf geregelt, vorzugsweise derart, dass einerseits der über den Wärmetauscher des ersten Kühlwasserkreislaufs geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs möglichst groß wird und damit in Richtung auf einen entsprechenden Sollwert angenähert wird, und dass andererseits der über den Wärmetauscher des zweiten Kühlwasserkreislaufs geführte Kühlwasseranteil des zweiten Kühlwasserkreislaufs möglichst groß wird und damit in Richtung auf einen entsprechenden Sollwert angenähert wird. Diese Weiterbildung der Erfindung verfügt über den Vorteil, dass die Drehzahl der Seewasserpumpe noch vorteilhafter geregelt werden kann und das Potenzial einer Energieeinsparung bei Aufrechterhaltung einer guten Kühlung noch besser ausgeschöpft werden kann.According to an advantageous development, the cooling system comprises a second cooling water circuit, wherein the second cooling water circuit and the seawater subsystem or the second cooling water circuit and the first cooling water circuit are coupled via a heat exchanger, in the region of the cooling water of the second cooling water circuit through the seawater of the seawater subsystem or the cooling water of the first Cooling water circuit is cooled. The second cooling water circuit comprises a bypass to the second cooling water circuit and the seawater subsystem or the second cooling water circuit and the first cooling water circuit coupling heat exchanger and a control valve, is determined by the position of which cooling water content of the second cooling water circuit via the heat exchanger and which cooling water content of the second cooling water circuit on the Bypass is performed. The position of the control valve of the second cooling water circuit is determined such that a return cooling water temperature upstream of the heat exchanger corresponds to a corresponding desired value. The speed of the seawater pump of the seawater distribution system is further regulated depending on the position of the control valve of the second cooling water circuit, preferably such that on the one hand, the guided over the heat exchanger of the first cooling water circuit cooling water content of the first cooling water circuit is as large as possible and is thus approximated towards a corresponding setpoint, and that on the other hand, the guided over the heat exchanger of the second cooling water circuit cooling water content of the second cooling water circuit is as large as possible and is thus approximated in the direction of a corresponding desired value. This development of the invention has the advantage that the speed of the seawater pump can be controlled even more advantageous and the potential of energy savings while maintaining good cooling can be better exploited.
Nach einer vorteilhaften Weiterbildung umfasst der erste Kühlwasserkreislauf eine Kühlwasserpumpe, einen Niedertemperaturladeluftkühler, mindestens einen Kühler zur Kühlung mindestens einer weiteren Baugruppe, und ein weiteres Stellventil, über dessen Schaltstellung ein über den Niedertemperaturladeluftkühler geführter Kühlwasseranteil des ersten Kühlwasserkreislaufs einstellbar ist. Die Drehzahl der Kühlwasserpumpe des ersten Kühlwasserkreislaufs wird abhängig von der Stellung des oder jedes Stellventils des ersten Kühlwasserkreislaufs geregelt, vorzugsweise derart, dass der über den Niedertemperaturladeluftkühler geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs möglichst groß wird und damit in Richtung auf einen entsprechenden Sollwert angenähert wird. Bei dieser vorteilhaften Weiterbildung wird zusätzlich zur Drehzahl der Seewasserpumpe auch die Drehzahl der Kühlwasserpumpe des ersten Kühlkreislaufs geregelt, um die Drehzahl derselben so weit wie möglich zu reduzieren und hierdurch Energie einzusparen. Dann, wenn der zweite Kühlwasserkreislauf und der erste Kühlwasserkreislauf über den jeweiligen Wärmetauscher gekoppelt sind, wird die Drehzahl der Kühlwasserpumpe des ersten Kühlwasserkreislaufs zusätzlich abhängig von der Stellung des Stellventils des zweiten Kühlwasserkreislaufs geregelt. Auch dieses Merkmal erlaubt eine effektive Regelung der Drehzahl der Kühlwasserpumpe des ersten KühlwasserkreislaufsAccording to an advantageous development, the first cooling water circuit comprises a cooling water pump, a low-temperature charge air cooler, at least one cooler for cooling at least one further assembly, and a further control valve, via whose switching position a guided via the Niedertemperaturladeluftkühler cooling water portion of the first cooling water circuit is adjustable. The speed of the cooling water pump of the first cooling water circuit is controlled depending on the position of the or each control valve of the first cooling water circuit, preferably such that the guided over the Niedertemperaturladeluftkühler cooling water content of the first cooling water circuit is as large as possible and is thus approximated towards a corresponding setpoint. In this advantageous development, in addition to the speed of the seawater pump and the speed of the cooling water pump of the first cooling circuit is controlled to reduce the speed thereof as much as possible and thereby save energy. Then, when the second cooling water circuit and the first cooling water circuit are coupled via the respective heat exchanger, the rotational speed of the cooling water pump of the first cooling water circuit is additionally regulated depending on the position of the control valve of the second cooling water circuit. This feature also allows effective control of the speed of the cooling water pump of the first cooling water circuit
Nach einer Variante umfasst der erste Kühlwasserkreislauf eine Kühlwasserpumpe, einen Niedertemperaturladeluftkühler, einen Hochtemperaturladeluftkühler mindestens einen Kühler zur Kühlung mindestens einer weiteren Baugruppe, und ein weiteres Stellventil, über dessen Schaltstellung ein über den Niedertemperaturladeluftkühler geführter Kühlwasseranteil und ein über den Hochtemperaturladeluftkühler geführter Kühlwasseranteil einstellbar ist. Eine Drehzahl der Kühlwasserpumpe des ersten Kühlwasserkreislaufs wird dann abhängig von der Stellung dieses Stellventils des ersten Kühlwasserkreislaufs geregelt, vorzugsweise derart, dass der über den Hochtemperaturladeluftkühler geführte Kühlwasseranteil möglichst groß wird und damit in Richtung auf einen entsprechenden Sollwert angenähert wird. Auch diese Variante erlaubt eine effektive Regelung der Drehzahl der Seewasserpumpe sowie der Drehzahl der Kühlwasserpumpe des ersten Kühlwasserkreislaufs zur möglichst optimalen Energieeinsparung bei Aufrechterhaltung der notwendigen Kühlfunktion.According to a variant, the first cooling water circuit comprises a cooling water pump, a low-temperature charge air cooler, a high-temperature charge air cooler at least one cooler for cooling at least one further assembly, and a further control valve, via its switching position via the Niedertemperaturladfluftkühler guided cooling water content and a guided over the high-temperature charge air cooler cooling water content is adjustable. A speed of the cooling water pump of the first cooling water circuit is then regulated depending on the position of this control valve of the first cooling water circuit, preferably such that the guided over the high-temperature charge air cooler cooling water content is as large as possible and is thus approximated towards a corresponding desired value. This variant also allows effective control of the speed of the seawater pump and the speed of the cooling water pump of the first cooling water circuit for optimal energy savings while maintaining the necessary cooling function.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:
- Fig. 1:
- ein Blockschaltbild eines ersten Kühlsystems eines Schiffs zur Verdeutlichung der Erfindung;
- Fig. 2:
- ein Blockschaltbild eines zweiten Kühlsystems eines Schiffs zur Verdeutlichung der Erfindung;
- Fig. 3:
- ein Blockschaltbild eines dritten Kühlsystems eines Schiffs zur Verdeutlichung der Erfindung;
- Fig. 4:
- ein Blockschaltbild eines vierten Kühlsystems eines Schiffs zur Verdeutlichung der Erfindung;
- Fig. 5:
- ein Blockschaltbild eines fünften Kühlsystems eines Schiffs zur Verdeutlichung der Erfindung;
- Fig. 6
- ein Blockschaltbild zur Verdeutlichung des Standes der Technik; und
- Fig. 7
- ein Blockschaltbild zur weiteren Verdeutlichung der Erfindung.
- Fig. 1:
- a block diagram of a first cooling system of a ship to illustrate the invention;
- Fig. 2:
- a block diagram of a second cooling system of a ship to illustrate the invention;
- 3:
- a block diagram of a third cooling system of a ship to illustrate the invention;
- 4:
- a block diagram of a fourth cooling system of a ship to illustrate the invention;
- Fig. 5:
- a block diagram of a fifth cooling system of a ship to illustrate the invention;
- Fig. 6
- a block diagram for illustrating the prior art; and
- Fig. 7
- a block diagram for further illustrating the invention.
Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben eines Kühlsystems eines Schiffs.The present invention relates to a method of operating a cooling system of a ship.
Das Seewasserteilsystem 11 verfügt über eine Seewasserpumpe bzw. mindestens eine Seewasserpumpe, im gezeigten Ausführungsbeispiel über zwei Seewasserpumpen 14a, 14b, die jeweils von einem Aktuator 15a, 15b angetrieben sind.The
Über die Seewasserpumpen 14a, 14b des Seewasserteilsystems 11 kann aus Seewasserbehältern 16a, 16b Seewasser entnommen und über den Wärmetauscher 12 gefördert werden, welcher das Seewasserteilsystem 11 mit dem ersten Kühlwasserkreislauf 13 koppelt. Im ersten Kühlwasserkreislauf 13 wird Kühlwasser gefördert, um in
Nach der Erfindung wird die Drehzahl der Seewasserpumpe, in
Die Drehzahl der Seewasserpumpe 14a und/oder 14b abhängig von der Stellung des Stellventils 18 des ersten Kühlwasserkreislaufs 13 wird dabei derart geregelt, dass der über den Wärmetauscher 12 geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs 13 möglichst groß wird und damit in Richtung auf einen entsprechenden Soll-Wert angenähert wird.The speed of the
In diesem Zusammenhang sei erwähnt, dass für den Kühlwasseranteil des ersten Kühlwasserkreislaufs 13, der über den Wärmetauscher 12 geführt wird, typischerweise ein Maximalwert von z. B. 90 % vorgegeben ist, sodass über den Bypass 17 immer eine Mindestmenge des Kühlwasseranteils von z. B. 10 % geführt wird. Die Einstellung bzw. Regelung der Drehzahl der Seewasserpumpe 14a und/oder 14b abhängig von der Stellung des Stellventils 18 erfolgt derart, dass der über den Wärmetauscher 12 geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs in Richtung auf seinen Maximalwert und damit entsprechenden Soll-Wert angenähert wird, sodass demnach immer möglichst viel Kühlwasser des ersten Kühlwasserkreislaufs 13 über den Wärmetauscher 12 geführt wird, jedoch immer eine Mindestmenge an Kühlwasser über den Bypass 17 fließt.In this context, it should be mentioned that for the cooling water portion of the first
Durch entsprechende Reduzierung der Drehzahl der Seewasserpumpe 14a und/oder 14b wird die durch den Wärmetauscher 12 geführte Seewassermenge reduziert und hierdurch indirekt der über den Wärmetauscher 12 geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs 13 erhöht.By correspondingly reducing the rotational speed of the
Bei der obigen Regelung der Drehzahl der Seewasserpumpe 14a und/oder 14b kann weiterhin die Temperatur des Seewassers stromabwärts des Wärmetauschers 12 berücksichtigt werden. Dann, wenn die Temperatur des Seewassers stromabwärts des Wärmetauschers 12 größer als ein vorgegebener Grenzwert wird, wird die Drehzahl der Seewasserpumpe 14a und/oder 14b erhöht, sodass dann die Temperatur des Seewassers stromabwärts des Wärmetauschers 12 kleiner als dieser Grenzwert wird oder demselben entspricht.In the above control of the rotational speed of the
Wie bereits ausgeführt, zeigt
Der zweite Kühlkreislauf 20 verfügt ebenso wie der erste Kühlkreislauf 13 über einen Bypass 22 und ein Stellventil 23. Die Stellung des Stellventils 23 des zweiten Kühlwasserkreislaufs 20 kann über einen Aktuator verändert werden. Die Stellung des Stellventils 23 des zweiten Kühlwasserkreislaufs 20 bestimmt, welcher Kühlwasseranteil des zweiten Kühlwasserkreislaufs 20 über den Wärmetauscher 21 geführt wird, und welcher Kühlwasseranteil des zweiten Kühlwasserkreislaufs 20 über den Bypass 22 zum Wärmetauscher 21 geführt wird. Dabei wird die Stellung des Stellventils 23 vorzugsweise derart bestimmt, dass eine Rücklauftemperatur stromaufwärts des Wärmetauschers 21 des Kühlwassers des zweiten Kühlwasserkreislaufs 20 einem entsprechenden, vorgegebenen Soll-Wert entspricht.The
Im Ausführungsbeispiel der
Dabei wird die Drehzahl der Seewasserpumpe 14a und/oder 14b derart geregelt, dass einerseits der über den Wärmetauscher 12 des ersten Kühlwasserkreislaufs 13 geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs 13 möglichst groß wird und damit in Richtung auf den entsprechenden Soll-Wert angenähert wird, und dass andererseits der über den Wärmetauscher 21 des zweiten Kühlwasserkreislaufs 20 geführte Kühlwasseranteil des zweiten Kühlwasserkreislaufs 20 möglichst groß wird und damit in Richtung auf einen entsprechenden Soll-Wert angenähert wird.The speed of the
Wie bereits im Zusammenhang mit dem ersten Kühlwasserkreislauf 13 beschrieben, ist auch für zweiten Kühlwasserkreislauf 20 vorgesehen, immer eine Mindestmenge an Kühlwasser über den Bypass 22 zu führen, sodass der entsprechende Soll-Wert für den über den Wärmetauscher 21 geführten Kühlwasseranteil des zweiten Kühlwasserkreislaufs 20 kleiner als 100 % ist.As already described in connection with the first
Auch in der Variante der
In
Die Drehzahl der Kühlwasserpumpe 28a und/oder 28b wird derart abhängig von der Schaltstellung der Schaltventile 18 und 30 bestimmt, dass möglichst viel Wasser über den Niedertemperaturladeluftkühler 26 geführt wird, dass also der über den Niedertemperaturladeluftkühler 26 geführte Kühlwasseranteil des ersten Kühlwasserkreislaufs 13 möglichst groß wird und damit in Richtung auf einen entsprechenden Soll-Wert angenähert wird. Dabei wird wiederum nicht die gesamte über die Kühlwasserpumpe 28a und/oder 28b geförderte Menge des Kühlwassers über den Niedertemperaturladeluftkühler 26 geführt, sondern es wird gewährleistet, dass stets ein minimaler Kühlwasseranteil dieses Kühlwassers des ersten Kühlwasserkreislaufs 13 über einen Bypass 34 zum Niedertemperaturladeluftkühler 26 geführt wird. Durch diese Regelung der Drehzahl der Kühlwasserpumpe 28a und/oder 28b des ersten Kühlwasserkreislaufs 13 wird demnach die Drehzahl der Kühlwasserpumpe 28a und/oder 28b reduziert, und zwar so weit, bis die über den Niedertemperaturladeluftkühler geführte Kühlwassermenge bzw. der über den Niedertemperaturladeluftkühler 26 geführte Kühlwasseranteil des Kühlwassers des ersten Kühlwasserkreislaufs 13 einem Maximalwert und damit seinem entsprechenden Soll-Wert entspricht.The speed of the cooling
Bei der Regelung der Drehzahl der Kühlwasserpumpe 28a und/oder 28b wird weiterhin die Temperatur des im Kühler 32 gekühlten Mediums, also in
In
In
Beim Kühlwassersystem 10 der
Die Kühlwasserpumpe 28a und/oder 28b fördert das Kühlwasser des ersten Kühlwasserkreislaufs 13 ausgehend von diesem Vorlauf, wobei die Schaltstellung des Stellventils 30 bestimmt, welcher Kühlwasseranteil über den Niedertemperaturladeluftkühler 26 geführt wird, und welcher Anteil am Niedertemperaturladeluftkühler 26 vorbei über den Kühler 32 geführt wird. Stromabwärts des Kühlers 32 wird das Kühlwasser des ersten Kühlkreislaufs 13 aufgeteilt, und zwar in einen Kühlwasseranteil, der mit Hilfe der Pumpe 36 über den Hochtemperaturladeluftkühler 27 geführt wird, sowie in einen Kühlwasseranteil, der an dem Hochtemperaturladeluftkühler 27 vorbei unmittelbar in den Rücklauf in Richtung auf den Wärmetauscher 12 geleitet wird. Ein Stellventil 37, welches von einem Aktuator 38 verstellbar ist, bestimmt dabei diese beiden Kühlwasseranteile, also denjenigen Kühlwasseranteil, der mit Hilfe der Pumpe 36 über den Hochtemperaturladeluftkühler 27 geführt wird, sowie denjenigen Kühlwasseranteil, der am Hochtemperaturladeluftkühler 27 vorbeigeführt wird. Die Regelung der Drehzahl der Seewasserpumpe 14a und/oder 14b des Seewasserteilsystems 11 erfolgt in
Die Regelung der Drehzahl der Kühlwasserpumpe 28a und/oder 28b des ersten Kühlkreislaufs 13 erfolgt abhängig von der Stellung der Stellventile 18 und/oder 30 und/oder 37, und zwar derart, dass über eine entsprechende Anpassung der Drehzahl der Kühlwasserpumpe 28a und/oder 28b gewährleistet wird, dass möglichst viel Kühlwasser und damit ein möglichst hoher Kühlwasseranteil über den Hochtemperaturladeluftkühler 27 geführt wird. Es wird jedoch wiederum ein minimaler Kühlwasseranteil an dem Hochtemperaturladeluftkühler 27 vorbeigeführt. Die Kühlwasserpumpe 36 kann abhängig von den Bedürfnissen der Brennkraftmaschine 25 hinsichtlich ihrer Drehzahl geregelt werden.The control of the rotational speed of the cooling
Bei den Kühlwasserpumpen 28a, 28b, 33 und 36 handelt es sich jeweils um elektromotorisch angetriebene Kühlwasserpumpen. Durch entsprechende Änderung der Drehzahl der entsprechenden Aktuatoren 29a, 29b, 39, 40 kann die Förderleistung der entsprechenden Pumpe geregelt werden. Dies ist bevorzugt.The cooling
Es sei darauf hingewiesen, dass auch mechanisch angetriebene Kühlwasserpumpen 28a, 28b, 33, 36 genutzt werden können, wobei dann in den Kühlkreislauf Drosseln integriert sind, die über die Regelung entsprechend verstellt werden.It should be noted that mechanically driven cooling
Den unter Bezugnahme auf
- 1010
- Kühlsystemcooling system
- 1111
- SeewasserteilsystemSeawater subsystem
- 1212
- Wärmetauscherheat exchangers
- 1313
- erster Kühlwasserkreislauffirst cooling water circuit
- 1414
- Seewasserpumpeseawater pump
- 14a14a
- Seewasserpumpeseawater pump
- 14b14b
- Seewasserpumpeseawater pump
- 1515
- Aktuatoractuator
- 15a15a
- Aktuatoractuator
- 15b15b
- Aktuatoractuator
- 16a16a
- Seewassertank / -kastenSeawater tank / box
- 16b16b
- Seewassertank/ -kastenSeawater tank / box
- 1717
- Bypassbypass
- 1818
- StellventilControl valve
- 1919
- Aktuatoractuator
- 2020
- zweiter Kühlwasserkreislaufsecond cooling water circuit
- 2121
- Wärmetauscherheat exchangers
- 2222
- Bypassbypass
- 2323
- StellventilControl valve
- 2424
- Aktuatoractuator
- 2525
- BrennkraftmaschineInternal combustion engine
- 2626
- NiedertemperaturladeluftkühlerLow-temperature intercooler
- 2727
- HochtemperaturladeluftkühlerHigh-temperature intercooler
- 2828
- KühlwasserpumpeCooling water pump
- 28a28a
- KühlwasserpumpeCooling water pump
- 28b28b
- KühlwasserpumpeCooling water pump
- 2929
- Aktuatoractuator
- 29a29a
- Aktuatoractuator
- 29a29a
- Aktuatoractuator
- 3030
- StellventilControl valve
- 3131
- Aktuatoractuator
- 3232
- Kühlercooler
- 3333
- KühlwasserpumpeCooling water pump
- 3434
- Bypassbypass
- 3535
- Leitungmanagement
- 3636
- KühlwasserpumpeCooling water pump
- 3737
- StellventilControl valve
- 3838
- Aktuatoractuator
- 3939
- Aktuatoractuator
- 4040
- Aktuatoractuator
- 4141
- Reglerregulator
- 4242
- Baugruppemodule
- 4343
- Sensorsensor
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102016213787.5A DE102016213787A1 (en) | 2016-07-27 | 2016-07-27 | Method for operating a cooling system of a ship |
Publications (1)
Publication Number | Publication Date |
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EP3275777A1 true EP3275777A1 (en) | 2018-01-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17165174.8A Withdrawn EP3275777A1 (en) | 2016-07-27 | 2017-04-06 | Method of operating a refrigeration system of a ship |
Country Status (6)
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US (1) | US10654554B2 (en) |
EP (1) | EP3275777A1 (en) |
JP (1) | JP7248378B2 (en) |
KR (1) | KR102325867B1 (en) |
CN (1) | CN107662696B (en) |
DE (1) | DE102016213787A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113734382A (en) * | 2021-09-24 | 2021-12-03 | 合肥康东柴油机配套有限公司 | Cooling system and cooling method for diesel engine in ship and ocean engineering |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109501999B (en) * | 2018-11-30 | 2021-07-20 | 益阳中海船舶有限责任公司 | Air conditioning system for sea patrol ship |
US11066143B2 (en) * | 2019-02-13 | 2021-07-20 | GM Global Technology Operations LLC | Cooling system for electric propulsion system of watercraft |
CN109850104A (en) * | 2019-03-19 | 2019-06-07 | 蒋淑娇 | A kind of ship water circulation system water inlet multistage clear stream device |
CN112682157B (en) * | 2020-12-21 | 2022-02-25 | 中国北方发动机研究所(天津) | High-power span diesel engine cooling system of amphibious vehicle |
KR102620385B1 (en) * | 2021-12-27 | 2024-01-04 | 주식회사 일렉트린 | Coolant Circulation Pump Operation Optimization Method for Cooling System of Ship |
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EP0122113A2 (en) * | 1983-04-12 | 1984-10-17 | ALFA-LAVAL MARINE & POWER ENGINEERING AB | Method and arrangement for operating a cooling plant |
JP2002274493A (en) * | 2001-03-22 | 2002-09-25 | Sumitomo Heavy Ind Ltd | Automatic operation control method of seawater pump in cooling system of engine room internal apparatus of ship |
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CN105539804A (en) * | 2015-12-24 | 2016-05-04 | 中国船舶重工集团公司第七0四研究所 | Frequency converting control system and control method suitable for central cooling system of ship |
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JPS6132523U (en) * | 1984-07-28 | 1986-02-27 | 三菱重工業株式会社 | Fresh water cooling system for internal combustion engines |
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US6821171B1 (en) * | 2003-07-31 | 2004-11-23 | Brunswick Corporation | Cooling system for a four cycle outboard engine |
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WO2014172153A1 (en) * | 2013-04-19 | 2014-10-23 | Imo Industries, Inc. | Intelligent sea water cooling system |
CN104354849B (en) | 2014-10-27 | 2017-02-15 | 中国科学院广州能源研究所 | Triple co-generation system for heating cargo oil and ballast water and performing refrigeration by waste heat of oil tanker |
-
2016
- 2016-07-27 DE DE102016213787.5A patent/DE102016213787A1/en active Pending
-
2017
- 2017-04-06 EP EP17165174.8A patent/EP3275777A1/en not_active Withdrawn
- 2017-06-05 JP JP2017110643A patent/JP7248378B2/en active Active
- 2017-06-27 KR KR1020170081036A patent/KR102325867B1/en active IP Right Grant
- 2017-07-26 US US15/660,666 patent/US10654554B2/en active Active
- 2017-07-27 CN CN201710623841.1A patent/CN107662696B/en active Active
Patent Citations (5)
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EP0122113A2 (en) * | 1983-04-12 | 1984-10-17 | ALFA-LAVAL MARINE & POWER ENGINEERING AB | Method and arrangement for operating a cooling plant |
JP2002274493A (en) * | 2001-03-22 | 2002-09-25 | Sumitomo Heavy Ind Ltd | Automatic operation control method of seawater pump in cooling system of engine room internal apparatus of ship |
WO2009139201A1 (en) * | 2008-05-12 | 2009-11-19 | 三菱重工業株式会社 | Speed control apparatus for cooling sea-water transfer pump |
WO2016028474A1 (en) * | 2014-08-21 | 2016-02-25 | Imo Industries, Inc. | Intelligent seawater cooling system |
CN105539804A (en) * | 2015-12-24 | 2016-05-04 | 中国船舶重工集团公司第七0四研究所 | Frequency converting control system and control method suitable for central cooling system of ship |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113734382A (en) * | 2021-09-24 | 2021-12-03 | 合肥康东柴油机配套有限公司 | Cooling system and cooling method for diesel engine in ship and ocean engineering |
Also Published As
Publication number | Publication date |
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US20180029685A1 (en) | 2018-02-01 |
JP2018016299A (en) | 2018-02-01 |
KR102325867B1 (en) | 2021-11-11 |
JP7248378B2 (en) | 2023-03-29 |
DE102016213787A1 (en) | 2018-02-01 |
US10654554B2 (en) | 2020-05-19 |
CN107662696A (en) | 2018-02-06 |
KR20180012692A (en) | 2018-02-06 |
CN107662696B (en) | 2021-03-23 |
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