CN215174138U - Ship LNG (liquefied Natural gas) cold energy recovery system - Google Patents
Ship LNG (liquefied Natural gas) cold energy recovery system Download PDFInfo
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- CN215174138U CN215174138U CN202120872191.6U CN202120872191U CN215174138U CN 215174138 U CN215174138 U CN 215174138U CN 202120872191 U CN202120872191 U CN 202120872191U CN 215174138 U CN215174138 U CN 215174138U
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Abstract
The utility model provides a cold volume recovery system of boats and ships LNG, LNG storage tank, LNG heat exchanger, LNG engine, air conditioning system, between LNG storage tank and the LNG heat exchanger, all through the gas tube coupling between LNG heat exchanger and the LNG engine, air conditioning system includes cooling coil, cooling coil's refrigerant water outlet is connected with LNG heat exchanger through first refrigerant pipeline, and cooling coil's refrigerant water inlet is connected with LNG heat exchanger through the second refrigerant pipeline be equipped with flow control valve on the first refrigerant pipeline. The LNG cold energy recovery system for the ship has the advantages of simple structure and obvious energy saving, can meet the working condition of the air conditioning system in summer of the whole ship according to the size of the LNG engine, stops the operation of the compressor, saves energy, protects environment and promotes the energy consumption index of the whole ship; according to the calculation of the refrigerating capacity of the ship 14702k x 2, the average saving of 24h x 190kw x 2=9120kw per ship per day can be realized, and the diesel oil is saved for about 3.2T for one day.
Description
Technical Field
The utility model belongs to the technical field of the energy-conservation of boats and ships equipment, in particular to cold volume recovery system of boats and ships LNG.
Background
In a new generation of ocean ships in an unlimited navigation area, an LNG fuel system is more and more favored by shipowners and shipyards due to the advantages of environmental protection, low pollution emission, ocean environment protection and the like, and the environmental protection and the energy conservation are still one of the most important indexes for shipbuilding by shipowners. High-pressure LNG must evaporate to ambient temperature in advance before getting into the host computer burning at-160 ℃, calculation to-10 ℃ in this in-process LNG gasification, LNG gasification latent heat is 585.4kJ, and the specific heat capacity is 2.14 KJ/(m 2K), LNG can release 862kJ/KG cold energy approximately, and the refrigerating output is about 4.2KW, utilizes the energy consumption that these cold energy can save boats and ships refrigeration plant, makes boats and ships green energy-conservation more.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a cold volume recovery system of boats and ships LNG improves boats and ships energy utilization and rates, reduces boats and ships operation cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a cold volume recovery system of boats and ships LNG, LNG storage tank, LNG heat exchanger, LNG engine, air conditioning system, all through the gas tube coupling between LNG storage tank and the LNG heat exchanger, between LNG heat exchanger and the LNG engine, air conditioning system includes cooling coil, cooling coil's refrigerant water outlet is connected with LNG heat exchanger through first refrigerant pipeline, and cooling coil's refrigerant water inlet is connected with LNG heat exchanger through the second refrigerant pipeline be equipped with flow control valve on the first refrigerant pipeline.
Furthermore, the flow regulating valve is communicated with the second refrigerant pipeline through a side branch pipeline.
Further, the refrigerant water is ethylene glycol solution/propylene glycol solution.
Further, the temperature of the refrigerant water entering the LNG heat exchanger is 12 ℃, and the temperature of the refrigerant water flowing out of the LNG heat exchanger is 4 ℃.
The utility model discloses a cold volume recovery system of boats and ships LNG, liquefied natural gas gets into LNG heat exchanger, absorbs the cold volume of LNG saturated steam through refrigerant water (ethylene glycol solution propylene glycol solution), and the high pressure liquefied natural gas behind the release cold volume gets into the host computer, and during refrigerant water got into air conditioning system cooling coil, refrigerant water reduced to 4 ℃ by 12 ℃ through flow control valve control temperature, dehumidified fresh air cooling through the refrigeration fan, finally got into each room. The flow regulating valve is communicated with the inlet and the outlet of the second refrigerant pipeline by arranging the side branch pipeline so as to regulate the flow of refrigerant water entering the heat exchanger and achieve the control of heat exchange quantity in the heat exchanger. Under the condition of external environment temperature change, the temperature of the refrigerant water in the first refrigerant pipeline always keeps the rated requirement, so that the blown cold air achieves the purpose of comfort.
The LNG cold energy recovery system for the ship has the advantages of simple structure and obvious energy saving, can meet the working condition of the air conditioning system in summer of the whole ship according to the size of the LNG engine, stops the operation of the compressor, saves energy, protects environment and promotes the energy consumption index of the whole ship; according to the calculation of the refrigerating capacity of the ship 14702k x 2, the average saving of 24h x 190kw x 2=9120kw per ship per day can be realized, and the diesel oil is saved for about 3.2T for one day.
Drawings
Fig. 1 is a block diagram of a LNG cold recovery system for a ship according to the present invention.
The LNG air conditioning system comprises a LNG storage tank 1, an LNG heat exchanger 2, an LNG engine 3, an air conditioning system 4, a gas pipeline 5, a first refrigerant pipeline 6, a second refrigerant pipeline 7, a flow regulating valve 8 and a side branch pipeline 9.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, in a LNG cold recovery system for a ship, an LNG storage tank 1, an LNG heat exchanger 2, an LNG engine 3, and an air conditioning system 4 are provided, where the LNG storage tank 1 and the LNG heat exchanger 2, and the LNG heat exchanger 2 and the LNG engine 3 are connected by a gas pipeline 5, the air conditioning system 4 includes a cooling coil 41, a refrigerant water outlet of the cooling coil 41 is connected with the LNG heat exchanger 2 by a first refrigerant pipeline 6, a refrigerant water inlet of the cooling coil 41 is connected with the LNG heat exchanger 2 by a second refrigerant pipeline 7, the first refrigerant pipeline 6 is provided with a flow regulating valve 8, and the flow regulating valve 8 is communicated with the second refrigerant pipeline 7 by a side branch pipeline 9; and carrying out 104 m/h year on LNG entering a heat exchanger, wherein the temperature of the LNG entering the heat exchanger is 4 ℃, the temperature of the LNG exiting the heat exchanger is 5.75 ℃, the refrigerant water is an ethylene glycol solution/propylene glycol solution, the temperature of the refrigerant water entering the LNG heat exchanger 2 is 12 ℃, the temperature of the refrigerant water flowing out of the LNG heat exchanger 2 is 4 ℃, and the refrigerant water flow rate is 355 m/h year.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention should be regarded as the protection scope of the present invention for those skilled in the art.
Claims (4)
1. The utility model provides a cold volume recovery system of boats and ships LNG, its characterized in that includes LNG storage tank, LNG heat exchanger, LNG engine, air conditioning system, all through the gas tube coupling between LNG storage tank and the LNG heat exchanger, between LNG heat exchanger and the LNG engine, air conditioning system includes cooling coil, cooling coil's refrigerant water outlet is connected with LNG heat exchanger through first refrigerant pipeline, and cooling coil's refrigerant water inlet is connected with LNG heat exchanger through the second refrigerant pipeline be equipped with flow control valve on the first refrigerant pipeline.
2. The LNG cold recovery system of claim 1, wherein the flow control valve is in communication with the second refrigerant pipeline through a side branch pipeline.
3. The marine LNG cold recovery system according to claim 1, wherein the refrigerant water is an ethylene glycol solution/propylene glycol solution.
4. The marine LNG cold recovery system according to claim 1, wherein the refrigerant water entering the LNG heat exchanger has a temperature of 12 ℃ and the refrigerant water exiting the LNG heat exchanger has a temperature of 4 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120872191.6U CN215174138U (en) | 2021-04-26 | 2021-04-26 | Ship LNG (liquefied Natural gas) cold energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120872191.6U CN215174138U (en) | 2021-04-26 | 2021-04-26 | Ship LNG (liquefied Natural gas) cold energy recovery system |
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| Publication Number | Publication Date |
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| CN215174138U true CN215174138U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120872191.6U Active CN215174138U (en) | 2021-04-26 | 2021-04-26 | Ship LNG (liquefied Natural gas) cold energy recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117177534A (en) * | 2023-08-30 | 2023-12-05 | 深圳海兰云数据中心科技有限公司 | Power heat pipe refrigerating system of data center |
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2021
- 2021-04-26 CN CN202120872191.6U patent/CN215174138U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117177534A (en) * | 2023-08-30 | 2023-12-05 | 深圳海兰云数据中心科技有限公司 | Power heat pipe refrigerating system of data center |
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