Cold storage air conditioning system and passenger ship

Abstract

The utility model belongs to air conditioning system technical field discloses a kind of cold storage air conditioning system and passenger ship. The cold storage air conditioning system includes refrigeration unit, air handling device, cold storage unit and cooling unit, refrigeration unit includes refrigeration equipment and cooling pipeline, refrigeration equipment is used to prepare refrigerant, cooling pipeline is used to transport refrigerant;Air handling device is connected to refrigeration equipment by cooling pipeline;Cold storage unit includes cold storage equipment, cold storage liquid inlet pipe and cold storage liquid outlet pipe, cold storage equipment is used to store the cold capacity of refrigerant, and cold storage equipment is connected to cooling pipeline by cold storage liquid inlet pipe and cold storage liquid outlet pipe respectively, cold storage liquid inlet pipe is used to transport the refrigerant in refrigeration equipment to cold storage equipment, and cold storage liquid outlet pipe is used to transport the refrigerant in cold storage equipment to cooling pipeline. The cold storage air conditioning system can store and release cold capacity according to actual power load, reduce operating cost and improve economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning system technology, and in particular to a cold storage air conditioning system and a passenger ship. Background Technology

[0002] Large passenger ships or cruise ships are typically equipped with air conditioning systems to ensure the thermal comfort of passengers. As one of the most energy-intensive systems on such vessels, the air conditioning system's power consumption is closely related to the ambient temperature. For example, in summer, during the day when temperatures are high, the air conditioning load is often large, leading to increased power consumption. Conversely, at night, when ambient temperatures are lower, the air conditioning load is relatively small, thus reducing power consumption. Currently, most passenger ships have a high power load during the day, and the cooling demand of the air conditioning system exacerbates the ship's power shortage, potentially affecting the normal operation of the air conditioning system. At night, however, the ship's power load decreases, resulting in a surplus of power.

[0003] Therefore, how to make full use of the surplus electricity during off-peak hours at night to meet the cooling needs of the air conditioning system during the day and ensure the stability of the air conditioning system is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a cold storage air conditioning system and passenger ship that can optimize power consumption and cooling capacity distribution to improve economic efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Cold storage air conditioning systems include:

[0007] A refrigeration unit includes refrigeration equipment and cooling pipelines, wherein the refrigeration equipment is used to produce refrigerant and the cooling pipelines are used to transport the refrigerant;

[0008] An air handling unit is connected to the refrigeration equipment via the cooling pipeline, and the air handling unit is used to blow airflow cooled by the refrigerant.

[0009] A cold storage unit includes a cold storage device, a cold storage inlet pipe, and a cold storage outlet pipe. The cold storage device is used to store the cold energy of the refrigerant. The cold storage device is connected to the cooling supply pipeline through the cold storage inlet pipe and the cold storage outlet pipe. The cold storage inlet pipe is used to supply the refrigerant from the refrigeration equipment to the cold storage device, and the cold storage outlet pipe is used to supply the refrigerant from the cold storage device to the cooling supply pipeline.

[0010] A cooling unit is used to draw seawater through a seagate in the hull to cool the refrigeration equipment.

[0011] Preferably, the cooling unit includes a cooling water pipe with a cooling pump installed on it. One end of the cooling water pipe is connected to the sea gate, and the other end is connected to the condenser of the refrigeration equipment.

[0012] Preferably, the refrigeration unit further includes a return cooling line, which is disposed between the air handling unit and the refrigeration equipment, and is used to transport the refrigerant flowing out of the air handling unit.

[0013] Preferably, the refrigeration unit further includes a circulation pump, which is disposed on the return cooling line.

[0014] Preferably, the refrigeration unit further includes a bypass line, the two ends of which are connected to the cooling supply line and the cooling return line, respectively, and a differential pressure bypass valve is provided on the bypass line.

[0015] Preferably, a first electric regulating valve is provided on the cold storage inlet pipe, and a second electric regulating valve is provided on the cold supply pipeline.

[0016] Preferably, both the cold storage device and the cooling pipeline are equipped with temperature sensors.

[0017] The passenger ship includes the aforementioned cold storage air conditioning system, and the hull of the passenger ship is equipped with a sea door that communicates with seawater.

[0018] The beneficial effects of this utility model are as follows:

[0019] The cold storage air conditioning system provided by this utility model includes a refrigeration unit, an air handling unit, a cold storage unit, and a cooling unit. The refrigeration unit supplies refrigerant produced by the refrigeration unit to the air handling unit through a cooling pipeline. The air handling unit is used to blow air after heat exchange with the refrigerant, thus providing users with low-temperature air for cooling. The cold storage unit is connected to the cooling pipeline through a cold storage inlet pipe and a cold storage outlet pipe. Since the cold storage inlet pipe supplies the refrigerant produced by the refrigeration unit to the cold storage unit, and the cold storage unit can store the cold energy produced by the refrigerant, the cold storage unit can store the cold energy produced by the refrigeration unit. Since the cold storage outlet pipe supplies the refrigerant from the cold storage unit to the cooling pipeline, the cold storage unit can work with the refrigeration unit to supply refrigerant to the air handling unit, avoiding insufficient cooling capacity during peak electricity consumption periods. Since the cooling unit can supply low-temperature seawater to the refrigeration unit through the seawall of the ship for cooling, it makes full use of low-temperature seawater resources and has strong practicality. This cold storage air conditioning system, by setting up cold storage units, can store cold energy during off-peak periods of ship power consumption and release it to users during peak periods of ship power consumption. It optimizes power use and cold energy distribution, effectively reduces power and fuel consumption, and ensures the stability of the entire system operation, improving system energy efficiency and operational reliability.

[0020] The passenger ship provided by this utility model includes the aforementioned cold storage air conditioning system. This cold storage air conditioning system can store and release cooling capacity according to the actual power load of the passenger ship, and perform "peak shaving and valley filling" of power to maintain the stable operation of the air conditioning system. At the same time, it also reduces the peak load demand of the air conditioning system, thereby reducing operating costs and improving economic efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the cold storage air conditioning system provided in a specific embodiment of this utility model.

[0022] In the picture:

[0023] 100-Sea Gate;

[0024] 1-Refrigeration unit; 11-Refrigeration equipment; 12-Cooling supply pipeline; 121-Second electric regulating valve; 122-Expansion tank; 13-Cooling return pipeline; 131-Circulation pump; 14-Bypass pipeline; 141-Differential pressure bypass valve;

[0025] 2-Air handling unit;

[0026] 3-Cold storage unit; 31-Cold storage equipment; 32-Cold storage inlet pipe; 321-First electric regulating valve; 33-Cold storage outlet pipe;

[0027] 4-Cooling unit; 41-Cooling pump; 42-Cooling water pipe. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figure 1As shown, this utility model provides a cold storage air conditioning system, which includes a refrigeration unit 1, an air handling unit 2, a cold storage unit 3, and a cooling unit 4. The refrigeration unit 1 includes a refrigeration device 11 and a cooling pipeline 12. The refrigeration device 11 is used to produce refrigerant, and the cooling pipeline 12 is used to transport the refrigerant. The air handling device 2 is connected to the refrigeration device 11 through the cooling pipeline 12, and the air handling device 2 is used to blow airflow cooled by the refrigerant. The cold storage unit 3 includes a cold storage device... The equipment includes a cold storage inlet pipe 31, a cold storage outlet pipe 32, and a cold storage outlet pipe 33. The cold storage equipment 31 is used to store the cold energy of the refrigerant. The cold storage equipment 31 is connected to the cooling supply pipeline 12 through the cold storage inlet pipe 32 and the cold storage outlet pipe 33. The cold storage inlet pipe 32 is used to supply the refrigerant in the refrigeration equipment 11 to the cold storage equipment 31, and the cold storage outlet pipe 33 is used to supply the refrigerant in the cold storage equipment 31 to the cooling supply pipeline 12. The cooling unit 4 is used to draw seawater through the seabed door 100 of the hull to cool the refrigeration equipment 11.

[0033] In this embodiment, the refrigeration equipment 11 supplies the produced refrigerant to the air handling unit 2 through the cooling pipeline 12. The air handling unit 2 is used to blow air after heat exchange with the refrigerant, thus providing users with low-temperature air for cooling. The cold storage device 31 is connected to the cooling pipeline 12 through a cold storage inlet pipe 32 and a cold storage outlet pipe 33. Since the cold storage inlet pipe 32 can supply the refrigerant produced by the refrigeration equipment 11 to the cold storage device 31, and the cold storage device 31 can store the cold energy in the refrigerant. Therefore, the cold storage unit 3 can store the cold energy produced by the refrigeration unit 1; since the cold storage outlet pipe 33 can supply refrigerant from the cold storage device 31 to the cooling supply pipeline 12, the cold storage unit 3 can work with the refrigeration unit 1 to supply refrigerant to the air handling unit 2, avoiding insufficient cooling capacity of the refrigeration device 11 during peak electricity consumption periods; since the cooling unit 4 can supply low-temperature seawater to the refrigeration device 11 for cooling through the seabed door 100 of the hull, it makes full use of low-temperature seawater resources and has strong practicality. This cold storage air conditioning system, by setting up the cold storage unit 3, can store cold energy during off-peak electricity consumption periods and release cold energy to users during peak electricity consumption periods, optimizing power use and cold energy distribution, effectively reducing power and fuel consumption, while also ensuring the stability of the entire system operation, improving system energy efficiency and operational reliability.

[0034] Specifically, the refrigeration equipment 11 is a chiller unit commonly used in the art, capable of producing low-temperature refrigerant to provide cooling capacity for the terminal air handling unit 2. The specific structure and working principle of the refrigeration equipment 11 will not be elaborated here. The air handling unit 2 is a terminal air conditioner commonly used in the art, which can be a fan coil unit or an air conditioner, etc. Its specific structure and quantity are set according to the actual use scenario and are not limited here. The air handling unit 2 has a built-in fan, coil and other structure. The low-temperature refrigerant supplied by the cooling pipeline 12 enters the coil of the air handling unit 2, exchanges heat with the surrounding high-temperature and high-humidity air, and blows out the heat-exchanged air by the fan, thereby achieving a cooling effect. The cold storage equipment 31 is a cold storage tank or other cold storage container commonly used in the art, including a tank body and an insulation layer covering the tank body. The tank body is used to contain the low-temperature refrigerant flowing in from the cold storage inlet pipe 32, thereby storing cold capacity.

[0035] Understandably, when the ship's power load is low, such as at night, the refrigeration equipment 11 will supply low-temperature refrigerant to the cold storage equipment 31 through the cold storage liquid inlet pipe 32 to store the cold energy. During the daytime when the ship's power load is high, the cold storage equipment 31 will supply the low-temperature refrigerant stored overnight to the cooling supply pipeline 12 through the cold storage liquid outlet pipe 33, so that it can work with the refrigeration equipment 11 to provide cooling to the air handling unit 2, thereby making up for the insufficient cooling capacity of the refrigeration equipment 11 due to the power load.

[0036] Furthermore, such as Figure 1 As shown, the cooling unit 4 includes a cooling water pipe 42, on which a cooling pump 41 is installed. One end of the cooling water pipe 42 is connected to the seagate 100, and the other end is connected to the condenser of the refrigeration equipment 11. Specifically, the refrigeration equipment 11 mainly consists of four major components: a compressor, an evaporator, an expansion valve, and a condenser. The condenser releases heat from the high-temperature refrigerant to the outside, and this heat is cooled by the low-temperature seawater transported by the cooling water pipe 42, thereby meeting the cooling requirements of the refrigeration equipment 11 and ensuring its normal operation. Since the cooling unit 4 uses the low-temperature seawater around the hull to cool the refrigeration equipment 11 through the seagate 100, there is no need to set up a separate water cooling system or air cooling system, which is beneficial to the energy saving of the cooling unit 4.

[0037] like Figure 1 As shown, the refrigeration unit 1 also includes a return cooling line 13, which is located between the air handling unit 2 and the refrigeration equipment 11. The return cooling line 13 is used to transport the refrigerant flowing out of the air handling unit 2. Specifically, the refrigeration equipment 11, the cooling supply line 12, the air handling unit 2 and the return cooling line 13 form a closed circulation system. The high-temperature refrigerant after releasing its cooling capacity flows back to the refrigeration equipment 11 through the return cooling line 13, is cooled by the refrigeration equipment 11, and then continues to the next cycle.

[0038] The refrigeration unit 1 also includes a circulation pump 131, which is installed in the return cooling line 13. The circulation pump 131 is used to drive the refrigerant to circulate throughout the refrigeration unit 1. In this embodiment, two refrigeration devices 11 are connected in parallel. For each of the two refrigeration devices 11, there are also two circulation pumps 131. The two circulation pumps 131 correspond one-to-one with the two refrigeration devices 11. Each circulation pump 131 can drive the refrigerant flow of the refrigeration device 11. The circulation pump 131 adopts frequency conversion control commonly used in the art, which can adjust the flow rate of the refrigerant in the cooling line 12.

[0039] Furthermore, such as Figure 1 As shown, the refrigeration unit 1 also includes a bypass line 14, with its two ends connected to the cooling supply line 12 and the return cooling line 13, respectively. A differential pressure bypass valve 141 is installed on the bypass line 14. Specifically, the differential pressure bypass valve 141 is a commonly used automatic control valve in the art. The differential pressure bypass valve 141 can automatically adjust its opening according to the pressure difference between the cooling supply line 12 and the return cooling line 13, so that some excess refrigerant flows back to the refrigeration equipment 11 through the bypass line 14.

[0040] like Figure 1 As shown, a first electric regulating valve 321 is installed on the cold storage inlet pipe 32, and a second electric regulating valve 121 is installed on the cold supply pipeline 12. The first electric regulating valve 321 and the second electric regulating valve 121 can automatically adjust the pipe opening according to the command, thereby accurately controlling the flow rate of the refrigerant in the pipeline. Temperature sensors are installed on both the cold storage device 31 and the cold supply pipeline 12. The operator can monitor the refrigerant temperature output by the refrigeration device 11 and the refrigerant temperature in the cold storage device 31 according to the temperature sensors, so as to adjust the refrigerant flow rate in the cold supply pipeline 12 and the cold storage outlet pipe 33.

[0041] In order to improve the stability and reliability of the cold storage air conditioning system, an expansion tank 122 is provided on the cold supply pipeline 12. The expansion tank 122 is used to balance the fluctuation of the refrigerant volume caused by temperature changes in the system, so as to stabilize the refrigerant pressure of the entire system and thus achieve the purpose of protecting the equipment.

[0042] This embodiment also provides a passenger ship that includes the aforementioned cold storage air conditioning system. The passenger ship's hull is equipped with a seawater door 100 that communicates with the seawater. In this embodiment, the cold storage air conditioning system can store and release cooling capacity according to the passenger ship's actual power load, thus "peak shaving and valley filling" of electricity to maintain the stable operation of the air conditioning system. At the same time, it also reduces the peak load demand of the air conditioning system, thereby reducing operating costs and improving economic efficiency.

[0043] Specifically, the seagate 100 is an opening on the hull for drawing in external seawater, a common feature in the shipbuilding industry. The interior of the seagate 100 is connected to a cooling water pipe 42, and a cooling pump 41 is installed on the cooling water pipe 42. When the refrigeration equipment 11 needs to be cooled, the cooling pump 41 is activated, thereby drawing in the low-temperature seawater around the hull to cool the condenser of the refrigeration equipment 11. The seawater after cooling and heat exchange is discharged from the ship through an external pipe.

[0044] In this embodiment, the working process of the passenger ship's cold storage air conditioning system is roughly as follows:

[0045] During periods of low electricity load in summer (such as at night), staff switch the cold storage air conditioning system to cold storage mode. In cold storage mode, the first electric regulating valve 321 is opened and the second electric regulating valve 121 is closed. The low-temperature refrigerant produced by the refrigeration equipment 11 flows into the cold storage equipment 31 through the cold storage inlet pipe 32. At the same time, some of the low-temperature refrigerant is also transported to the terminal air handling unit 2 through the cold storage outlet pipe 33. Therefore, in cold storage mode, the refrigeration equipment 11 will accumulate cold energy in the cold storage equipment 31 while supplying cooling to the terminal air handling unit 2.

[0046] After the cold storage device 31 has completed cold storage, the staff will switch the system to normal mode. In normal mode, the second electric regulating valve 121 is opened and the first electric regulating valve 321 is closed. The refrigerant produced by the refrigeration device 11 will be transported to the air handling unit 2 at the end through the cooling pipeline 12. At this time, the ambient temperature is not high and the user's cooling demand is small. The cooling capacity released by the air handling unit 2 to the user is provided by the refrigeration device 11. At the same time, in normal mode, if the temperature sensor on the cooling pipeline 12 detects that the temperature of the refrigerant output by the refrigeration device 11 deviates from the set temperature and remains so for a certain period of time, the refrigeration device 11 will automatically adjust the cooling load so that the output temperature of the refrigerant approaches the set temperature.

[0047] During peak summer electricity demand periods (e.g., midday), when the ship's power load reaches or approaches its peak, the refrigeration unit 11 reduces its cooling load and the power of the circulation pump 131 decreases to ensure stable and safe power supply. Simultaneously, the system is switched to cooling mode. In cooling mode, both the first electric regulating valve 321 and the second electric regulating valve 121 are opened. The refrigeration unit 11 and the cold storage unit 31 jointly supply low-temperature refrigerant to the terminal air handling unit 2. The refrigeration unit 11 also supplies refrigerant through the cold storage inlet pipe 32 to maintain sufficient pressure inside the cold storage unit 31 to ensure adequate cold storage. The device 31 can continuously output low-temperature refrigerant. In the cooling mode, the cooling load of the refrigeration device 11 is determined by the total electrical load of the ship, while the remaining cooling capacity is supplemented by the cold storage device 31. If the temperature sensor on the cold storage device 31 detects that the temperature of the refrigerant output by the cold storage device 31 is higher than that of the refrigerant output by the refrigeration device 11, and the difference between the two exceeds 2°C, the power of the circulation pump 131 will increase without exceeding the total electrical load of the ship. If the temperature sensor on the cold storage device 31 detects that the temperature of the refrigerant output by the cold storage device 31 is lower than that of the refrigerant output by the refrigeration device 11, and the difference between the two exceeds 0.5°C, the power of the circulation pump 131 will decrease accordingly.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cold storage air conditioning system, characterized in that, include: The refrigeration unit (1) includes a refrigeration device (11) and a cooling pipeline (12), wherein the refrigeration device (11) is used to produce refrigerant and the cooling pipeline (12) is used to transport the refrigerant. An air handling unit (2) is connected to the refrigeration equipment (11) via the cooling pipeline (12). The air handling unit (2) is used to blow airflow cooled by the refrigerant. The cold storage unit (3) includes a cold storage device (31), a cold storage inlet pipe (32), and a cold storage outlet pipe (33). The cold storage device (31) is used to store the cold energy of the refrigerant. The cold storage device (31) is connected to the cooling pipeline (12) through the cold storage inlet pipe (32) and the cold storage outlet pipe (33). The cold storage inlet pipe (32) is used to supply the refrigerant in the refrigeration equipment (11) to the cold storage device (31), and the cold storage outlet pipe (33) is used to supply the refrigerant in the cold storage device (31) to the cooling pipeline (12). Cooling unit (4) is used to draw seawater through the seabed door (100) of the hull to cool the refrigeration equipment (11).

2. The cold storage air conditioning system according to claim 1, characterized in that, The cooling unit (4) includes a cooling water pipe (42), on which a cooling pump (41) is installed. One end of the cooling water pipe (42) is connected to the sea gate (100), and the other end of the cooling water pipe (42) is connected to the condenser of the refrigeration equipment (11).

3. The cold storage air conditioning system according to claim 1, characterized in that, The refrigeration unit (1) further includes a return cooling line (13), which is located between the air handling unit (2) and the refrigeration equipment (11). The return cooling line (13) is used to transport the refrigerant flowing out of the air handling unit (2).

4. The cold storage air conditioning system according to claim 3, characterized in that, The refrigeration unit (1) also includes a circulation pump (131), which is located on the return cooling line (13).

5. The cold storage air conditioning system according to claim 3, characterized in that, The refrigeration unit (1) also includes a bypass line (14), the two ends of which are connected to the cooling supply line (12) and the cooling return line (13) respectively, and a differential pressure bypass valve (141) is provided on the bypass line (14).

6. The cold storage air conditioning system according to claim 1, characterized in that, The cold storage inlet pipe (32) is equipped with a first electric regulating valve (321), and the cold supply pipeline (12) is equipped with a second electric regulating valve (121).

7. The cold storage air conditioning system according to any one of claims 1-6, characterized in that, Temperature sensors are installed on both the cold storage device (31) and the cooling pipeline (12).

8. A passenger ship, characterized in that, The passenger ship includes a cold storage air conditioning system as described in any one of claims 1-7, wherein the hull of the passenger ship is provided with a seabed door (100) that communicates with seawater.

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