A solar-assisted ocean temperature difference power generation system

Abstract

The invention relates to a solar energy auxiliary ocean temperature difference power generation system. A solar-assisted ocean temperature difference power generation system is characterized in that it includes a solar auxiliary heating module, an OTEC power generation module, and a PLC energy management module; the OTEC power generation module uses an organic working medium with a low boiling point as a circulating working medium, and takes sea surface temperature seawater as a heat source to The organic working medium is preheated, and the solar energy of the solar auxiliary heating module is used as a supplementary heat source to reheat the organic working medium; the cold seawater at a depth of 900‑1100 meters in the sea is used as a cold source, and the thermal power conversion is realized through the organic Rankine cycle. The gas enters the steam turbine to drive the impeller to rotate, and drives the generator to generate electricity; the PLC energy management module realizes energy scheduling and operation control for the solar auxiliary heat module and the OTEC power generation module. The ocean temperature difference power generation system using solar heat as an auxiliary heat source has greatly improved the power generation efficiency of the system, which is conducive to the popularization and application of the ocean temperature difference power generation system.

Description

technical field [0001] The invention relates to the fields of mechanical engineering and new energy, in particular to a solar-assisted ocean temperature difference power generation system. Background technique [0002] Ocean temperature difference energy refers to the thermal energy stored in the temperature difference between the surface seawater and deep seawater, which can realize thermal cycle and generate electricity. The South my country Sea is located in the south of the Tropic of Cancer. It has a tropical climate with strong solar radiation. The surface water temperature is above 25°C throughout the year, while the deep water temperature below 1000m is below 5°C, with a temperature difference of 20-25°C. resource. [0003] Ocean temperature difference energy has attracted much attention in recent years due to its large resource storage, clean and pollution-free characteristics among renewable energy sources. Ocean temperature difference power generation (OTEC) is a ...

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Problems solved by technology

[0004] According to reports, the 50kW ocean thermal energy power station in Kume Island, Okinawa Prefecture, Japan successfully generated electricity for the first time in March 2013; in August 2015, the 100kW ocean thermal energy power generation system in Hawaii Island was successfully connected to the grid for power generation, and ocean thermal energy power generation was used as a new energy source The main way of power generation; French Reunion Island will also deliver a 100-150MW high-power OTEC power station group in 2025; China’s State Oceanic In order to improve the thermal efficiency of ocean thermoelectric power generation, it is currently in the research and development stage, and there are no relevant reports considering the introduction of solar-assisted ocean thermoelectric power generation systems

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