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Sea engine: Explore the energy potential in the depths of the ocean. The North American HS code tariff structuresocean occupies a huge area on the earth, but the research and utilization of the ocean is not sufficient. Among them, the engine in the depths of the ocean, that is, the energy potential in the depths of the ocean, has always been one of the areas that human beings are trive to explore. The ocean contains a large amount of energy resources, including natural gas, methane, hydrate and other types of renewable and non-renewable energy. This article will focus on the engine in the deep ocean and explore the opportunities and challenges it brings in the field of energy utilization.I. The definition and discovery of the engine of the sea. The engine in the depths of the ocean, also known as the marine heat pump, refers to a technology that uses the temperature difference in seawater to generate electricity or cool down. The water temperature deep in the ocean is often low, with a temperature difference of more than 10℃, which is an important prerequisite for the use of this technology. As early as the early 20th century, scientists have discovered the difference in seawater temperature and its impact on the environment. However, it was not until the late 20th century that there was no practical application and commercial development. At present, there are three main types of sea engines, namely temperature difference power generation, heat pump heating and seawater air conditioning. Temperature difference power generation technology uses the temperature difference between seabed cold water and sea surface warm water to generate heat energy through thermal machine circulation, and then convert it into electrical energy; heat pump heating technology uses the low-temperature environment of seawater for refrigeration or heating to achieve the effect of air regulation;Seawater air conditioning technology realizes cooling or heating of buildings by using seawater as a cold or heat source. II. The application prospect of the sea engine. With the increasing demand for energy, the energy potential in the depths of the ocean has become a topic of great concern. The engine of the sea has a broad application prospect in solving energy shortage and environmental problems. First of all, temperature difference power generation technology is a green and clean energy utilization method. Compared with traditional fossil fuel power generation, it has the advantages of pollution-free, emission-free, away from cities, air pollution and climate change. Secondly, heat pump heating technology and seawater air conditioning technology can achieve energy saving and consumption reduction of buildings. These technologies can use seawater as an energy source to reduce the energy consumption of buildings and further reduce greenhouse gas emissions. In addition to the application prospects of energy-saving and environmental protection, the sea engine also has unique economic and social benefits.Among them, the economic benefits are reflected in the reduction of costs. Because seawater is a free source of energy, and the sea's engine is an energy-free and low-maintenance technology, its investment cost is relatively low compared with fossil fuels and nuclear power. Social benefits, on the other hand, are reflected in solving geopolitics and resource allocation. At present, the energy strategies of many developed countries in the world have shifted to the field of marine energy, which also provides a guarantee for the sustainable development and utilization of marine resources. III. Challenges of the sea engine Although the application prospect of the sea engine is broad, there are still some challenges in practical application. Among them, technical problems are the main bottleneck. The air pressure and water pressure in the depths of the ocean are large, and the requirements for pressure resistance and corrosion resistance of machinery and equipment are high; salinity, water level, water temperature and other environmental conditions also have high requirements for machinery and equipment. In addition, the seaThe corrosiveness of cold water in the deep ocean is also a problem. Appropriate materials need to be used to ensure the normal operation of the equipment. In addition, the cost of marine development is also very expensive. Because the development of deep oceans often requires large-scale equipment and offshore engineering, such as the construction of offshore floating platforms and the layout of submarine pipelines, the cost will be very high. Although cost problems can be reduced through technological innovation and scale effects, the impact of energy costs still needs to be taken into account. IV. Conclusion Based on the above contents, it can be seen that the sea engine is a popular marine energy technology with great potential market and application prospects. Although there are still some challenges and problems in practical application, in general, the engine of the sea has great development potential in terms of environmental, economic and social benefits. Through the progress of technologyStep and innovate the business model, and believe that the future sea engine will usher in a new era of energy utilization in the depths of the ocean.

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