Energy storage tank internally provided with heat storage cobblestones

Abstract

The invention belongs to the technical field of solar energy storage and discloses an energy storage tank internally provided with heat storage cobblestones. The energy storage tank comprises a tank body, the cobblestones, heat conducting oil, a net bag and a net cage; the bottom of the tank body is circular; the net cage is arranged inside the tank body; the net bag is arranged inside the net cage; the net bag is full of the cobblestones; the hole diameter of the net bag is smaller than the particle size of the cobblestones; the cobblestones are submerged under the heat conducting oil; the upper part of the tank body is provided with a hot oil inlet pipe and a heat conducting oil outlet pipe, wherein the hot oil inlet pipe is connected with a solar heat collecting device; the heat conducting oil outlet pipe is connected with a steam generator; the circular bottom of the tank body is provided with a cold oil outlet pipe and a cooled heat conducting oil inlet pipe, wherein the cold oiloutlet pipe is connected with the solar heat collecting device; and the cooled heat conducting oil inlet pipe is connected with the steam generator. By utilizing the cobblestones for storing solar energy, the energy storage tank disclosed by the invention reduces the application amount of the heat conducting oil, increases the storage capacity of the energy storage tank, increases the heat storagequantity and increases the utilization rate of the solar energy.

Description

technical field [0001] The invention belongs to the technical field of solar energy storage, and in particular relates to an energy storage tank with built-in heat storage pebbles. Background technique [0002] The main means of solar thermal power generation include dish, tower, trough and linear Fresnel. The difference between different methods is mainly in the different forms of solar heat collection, and the basic physical process of power generation is basically the same, which is based on the light energy-electric energy process. The principle of solar thermoelectric technology is to use a solar concentrating system to reflect direct radiation to the surface of a central heat absorber, convert solar energy into thermal energy, and then store the thermal energy and generate electricity through a generator. [0003] Solar energy has the characteristics of intermittent and low heat flow, so it cannot generate power at night or on rainy days. At present, the method of so...

AI Technical Summary

Problems solved by technology

[0004] Existing energy storage devices often use a molten salt tank structure with thermal insulation properties, but the thermal insulation of molten salt tanks has the following problems, high cost of use, unstable energy storage, and high freezing point of molten salt, which will damage the equipment after solidification

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