Single-working-medium ocean thermal energy collection and power generation device and method

Abstract

The embodiment of the invention discloses a single-working-medium ocean thermal energy collection and power generation device. The device comprises a pressure-resistant cover, a phase change cylinder,an energy storage cylinder and an expansion machine are arranged in the pressure-resistant cover in sequence, the phase change cylinder is connected with the energy storage cylinder through an energystorage expansion one-way channel of the expansion machine, the energy storage cylinder is connected with the phase change cylinder through an energy release expansion one-way channel of the expansion machine, the energy storage expansion one-way channel and the energy release expansion one-way channel are filled with circulating working media to form a closed circulating loop, and the expansionmachine is connected with a generator. The invention further discloses an ocean thermal energy power generation method. According to the device and the method, the single gas-liquid phase change cycleworking medium is adopted to collect ocean thermal energy, the ocean thermal energy is used for power generation, the maximum pressure intensity of the system can be substantially reduced, the powergeneration time is prolonged, the power generation control process is optimized, and mutual permeation and mixing of the working media are avoided.

Description

Technical field[0001]The embodiment of the invention relates to the technical field of ocean temperature difference energy utilization devices, in particular to a single working substance ocean temperature difference energy collection and power generation device and method.Background technique[0002]Temperature difference energy is the largest energy reserve in ocean energy. It has the advantages of renewable, clean, and stable, and is gradually attracting more and more attention. For example, the temperature difference between the surface water temperature of the South my country Sea and the deep water temperature below 800 meters is maintained between 20 ℃ and 24 ℃, which has favorable conditions for the utilization of temperature difference. Ocean thermoelectric power generation is one of the main ways of using thermoelectric energy, which can effectively meet the power supply needs of ocean monitoring instruments, ocean platform equipment, and remote island living.[0003]Ocean tem...

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Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a single working substance ocean temperature difference energy collection power generation device and method to achieve the purpose of high power generation efficiency, stable operation and long service life , which solves the problems of small volume change rate of working fluid, short power generation time, difficult control of power generation process, high operating pressure, permeation and mixing between multiple working fluids, and short service life in the existing ocean temperature difference energy harvesting power generation device and method

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