Efficient temperature stratification-type water energy-storage water-storage device

Abstract

The invention discloses an efficient temperature stratification-type water energy-storage water-storage device, and relates to the technical filed of water energy storage, for solving the technical issue of improving the energy storage efficiency. The device comprises a water storage groove and tubular water distributors, and is characterized in that the upper part and the lower part of the inner cavity of the water storage groove are respectively provided with a water seepage flat-type porous medium plate; the plate surface of each porous medium plate is in parallel with the water level, and the periphery of each porous medium plate is jointed with the inner wall of the water storage groove and is water-proof and sealed; the tubular water distributors are two, and are all distributed in the inner cavity of the water storage groove, wherein one tubular water distributor is positioned above the porous medium plate at the upper part, and the other tubular water distributor is positioned below the porous medium plate at the lower part; and the opening of the tubular water distributor at the upper part is upwards, the opening of the tubular water distributor faces downwards, and the two tubular water distributors are communicated with the outer part of the water storage groove through a pipeline. The device provided by the invention has high energy storage efficiency.

Description

technical field [0001] The invention relates to water energy storage technology, in particular to the technology of a high-efficiency temperature stratified water energy storage device. Background technique [0002] Water energy storage is an air-conditioning cold storage method in which water is used as a cold storage (heat) medium and the sensible heat of water is used to store cold (heat). The storage tanks of existing water energy storage systems mainly include mixing tank type, labyrinth type and temperature stratified type. Among them, the temperature stratified water storage tank has the characteristics of high efficiency and low investment, and has been widely used. [0003] The temperature-stratified water storage tank utilizes the characteristic that the density of water is different at different temperatures, and relies on the density difference to keep the warm water and cold water separated, avoiding the heat loss caused by the mixing of cold water and warm wat...

AI Technical Summary

Problems solved by technology

However, although the existing water distributor can form a relatively stable thermocline between the upper warm water area and the lower cold water area in the temperature stratified water storage tank, there is turbulence below the thermocline due to the interference of the inlet flow field. Therefore, a part of the energy in the thermocline layer will be brought to the lower part, so that the energy storage effect of the existing temperature stratified water storage tanks is not ideal.

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