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Fishing boat LNG power transformation cold/ heat energy utilization system and implementation method thereof

An implementation method and power technology, which are applied in the field of fishery ship power system, can solve the problem that the power system configuration cannot be topologically, and achieve the effect of high practicability

Inactive Publication Date: 2021-02-02
广州中臣碧阳科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, in order to solve the problem that the power system configuration of conventional fishing vessels cannot be topologically configured, the present invention proposes a cold / heat energy utilization system for LNG power transformation of fishing vessels and its implementation method, which utilizes the cold energy of LNG gasification to carry out low-temperature fish catch Storage, chilled fresh processing, cooling in the living area, waste heat conversion of the main engine after combustion into an air-source heat pump, to achieve a set of power system with both cooling and heating to achieve the purpose of energy saving and emission reduction

Method used

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  • Fishing boat LNG power transformation cold/ heat energy utilization system and implementation method thereof
  • Fishing boat LNG power transformation cold/ heat energy utilization system and implementation method thereof
  • Fishing boat LNG power transformation cold/ heat energy utilization system and implementation method thereof

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Embodiment 1

[0047] Such as figure 1 As shown, the present invention provides a cold / heat energy utilization system for LNG power transformation of fishing boats, including a power host 1, a domestic generator 2, an LNG storage tank 3, a gasification device 4, a gas source heat pump 5, an antifreeze storage tank 6, Catch low-temperature storage compartment 7, living area air conditioner 8, circulation pump 9, recovery pump 10, electric control valve 11, cold preservation compressor 12, constant temperature adjustment device 13 and chilled pool 14. The working principle of this system is as follows:

[0048]When the main engine 1 is working, the low-temperature liquid-phase LNG is gasified in the gasification device 4 from the LNG storage tank 3 through the shut-off valve, and the antifreeze liquid exchanges heat with the cold energy released by the LNG to obtain a -40°C low-temperature liquid, which is passed through the circulation pump 9 Under the action of circulating refrigeration. Th...

Embodiment approach

[0051] Such as figure 2 As shown, the present invention provides a method for implementing a cold / heat energy utilization system for LNG power transformation of a fishing vessel, comprising the following steps:

[0052] S1. Calculating the cooling load with reference to the main parameters of the modified fishing boat power, see Table 1

[0053] Table 1 The main technical parameters of the modified fishing boat

[0054] diesel engine Rated power / KW amount cummins 400 2 Fishing cabin volume m3 Design cabin temperature ℃ Freezing time / h 10 -35 8

[0055] Known tank capacity, design temperature and freezing time, according to the volume of 10m 3 The formula for calculating the freezing load of the fishing tank is:

[0056] Q q =Q 1 +Q 2 +Q 3 +Q 4 +Q 5

[0057] In the formula, Q q is the cooling load of fishing cabin, kw; Q 1 Introduced heat for maintaining the structure, kw; Q 2 Heat release for cargo, kw; Q 3 Cooling load fo...

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Abstract

The invention discloses a fishing boat LNG power transformation cold / heat energy utilization system and an implementation method thereof. The system comprises a power main engine, a life generator, an LNG storage tank, a gasification device, an air source heat pump, a non-freezing liquid storage tank, a fishery harvesting low-temperature storage cabin, a living area air conditioner, a circulatingpump, a recycling pump, an electric adjusting valve, a cold insulation compressor, a constant-temperature adjusting device and a fresh ice pool. Hot air exhausted by combustion of the power main engine is recycled through the air source heat pump, when the power main engine stops working, the recycling pump recycles non-freezing liquid to be stored in the non-freezing liquid storage tank under adjustment of the electric adjusting valve, and meanwhile the life generator runs to provide electric energy for the cold insulation compressor. The non-freezing liquid is firstly cooled to the low temperature through cold energy released by LNG gasification, then fish bodies in a fishing cabin are cooled in a secondary refrigerant manner, waste heat generated by combustion of the power main engineis used as the air source heat pump, the cold / heat integrated system is achieved through original power transformation, the installed capacity of the main engine can be reduced, energy is saved, andwaste gas emission is reduced.

Description

technical field [0001] The invention relates to the technical field of power systems of fishing vessels, in particular to a cold / heat energy utilization system for LNG power transformation of fishing vessels and an implementation method thereof. Background technique [0002] Conventional fishing vessels are equipped with two high-power marine diesel generator main engines, one for the navigation power system and the other for the ship's cooling / heating energy system. Fuel consumption and exhaust emissions are large during fishing operations. With the development of the industry, the nitrogen oxides produced by the combustion of marine diesel engines are increasingly polluting the air. According to statistics, 5% to 10% of air pollution comes from ship exhaust. Contents of the invention [0003] In view of this, in order to solve the problem that the power system configuration of conventional fishing vessels cannot be topologically configured, the present invention proposes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D3/10F25D17/06F25D29/00F02B63/04F02B43/10F04B35/04F04B37/12
CPCF02B43/10F02B63/04F02B2043/103F04B35/04F04B37/12F25D3/10F25D17/06F25D29/00Y02B30/52Y02T10/12Y02T10/30
Inventor 王德钢黄培楠韩伟林
Owner 广州中臣碧阳科技集团有限公司
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