Photo-thermo-electric high-efficiency steam generating system and control method

Abstract

The invention discloses a photo-thermo-electric high-efficiency steam generating system which comprises an evaporator, a steam-water separator and a superheater. The evaporator and the superheater each comprise a vertically-arranged tank body, multiple S-curve-shaped heat exchange pipes, a distribution cavity and a collection cavity, wherein a fused salt inlet is formed in the upper portion of thetank body, a fused salt outlet is formed in the lower portion of the tank body, and the multiple S-curve-shaped heat exchange pipes are arranged in the tank body in the axial direction in an extendedmode at intervals. A fused salt outlet of a hot tank communicates with the superheater, the evaporator and a cold tank in sequence through a fused salt pipe, the distribution cavity of the evaporatorcommunicates with a water source, the collection cavity of the evaporator communicates with the steam-water separator and the distribution cavity of the superheater in sequence through a steam pipe,and the collection cavity of the superheater communicates with a steam turbine. The evaporator and the superheater adopt the mode of shell-side hot lava and tube-flow water vapor to improve the stability of operation, water vapor can be rapidly cut off so as to reduce the possibility of solidification of fused salt, and at the same time, the amount of produced steam is effectively improved due tothe large volume of the shell side.

Description

technical field [0001] The invention relates to the technical field of photothermoelectricity, in particular to a photothermoelectric high-efficiency steam generation system and a control method. Background technique [0002] Due to the energy crisis and air pollution, countries around the world have increased investment in solar energy research and development. Projects such as solar water heating, solar building, solar photovoltaic power generation, and solar thermal power generation have developed rapidly and gradually expanded in scale. There are four main types of solar thermal power generation systems: trough, tower, dish and linear Fresnel. At present, the conventional solar thermal power generation system uses reflectors to reflect and focus sunlight to the heat collector, and the heat collector converts the concentrated solar radiation energy into heat energy and transmits it to the working fluid in the heat collector. The heated working fluid It can directly evapo...

AI Technical Summary

Problems solved by technology

However, the current steam generation system has poor heat transfer efficiency and cannot absorb the heat of molten salt well, resulting in low overall efficiency

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