Novel cascade phase change heat storage and steam generation system

Abstract

The invention discloses a novel cascade phase change heat storage and steam generation system, and belongs to the field of engineering thermophysics. By means of the novel cascade phase change heat storage and steam generation system, heat is stored and released through phase changes of a phase change material (PCM), steam and water separation and steam purification are conducted through a steam pocket, the flow direction of heat conduction fluid (HTF) is controlled through a valve and a one-way valve, the temperature and pressure in a system are detected through a pressure meter and a thermometer, a sensible heat energy storage unit and a latent heat energy storage unit are combined, and the latent heat storage unit is formed by connecting a plurality of heat storage subsystems in series, so that the variety and mass of the phase change material are increased, the heat storage capacity of the phase change material is further utilized, the stability of the system is improved, and supply of steam at different outlet temperatures and heat energy storage of surplus steam can be achieved.

Description

technical field [0001] The invention belongs to the technical field of engineering thermophysics, and relates to a novel cascade phase change heat storage and steam generation system. Background technique [0002] With the development of the national economy, phase change energy storage systems have gradually been widely used in various fields such as new energy utilization, metallurgy, and nuclear engineering. In recent years, power plants are in urgent need of an energy storage system that can produce high-temperature and high-pressure steam for the factory, so as to make full use of the thermal resources of the power plant. In this system, when the power plant has extra surplus steam, the energy of the high-temperature and high-pressure steam can be converted into the energy of the phase change medium (molten salt) and stored; otherwise, the energy stored in the phase change medium can be used to convert water into High-temperature and high-pressure steam required by fac...

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Problems solved by technology

However, the structure of the device is relatively simple, which leads to its single function and lack of flexibility, which makes it difficult to meet the complex needs of actual industrial production.

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