Heat storage device capable of efficiently storing and releasing heat, heat exchange method and application of heat storage device

Abstract

The invention belongs to the technical field of heat storage water tank energy application, and discloses an efficient heat storage and heat release heat storage device, a heat exchange method and application of the efficient heat storage and heat release heat storage device. Cold water and hot water in the heat storage water tank are uniformly mixed in a heat convection manner; during heat release, hot water distributed at the upper part of the heat storage water tank uniformly and slowly flows out from the upper part to be supplied to a heat utilization system, and low-temperature water after heat release is uniformly and slowly introduced into the water tank from the lower part of the heat storage water tank, so that different cold water and hot water are layered. Cold water and hot water in the water tank are rapidly and evenly mixed in a convection heat exchange mode, no obvious temperature gradient exists, the cold water and hot water mixing speed is increased, and the energy storage efficiency of the heat storage water tank is improved. According to the heat storage water tank, the good water temperature layering effect is guaranteed during heat release, the water supply temperature is relatively increased, and the heat release time is prolonged.

Description

technical field [0001] The invention belongs to the technical field of heat storage tank energy application, and in particular relates to a heat storage device for high-efficiency heat storage and heat release, a heat exchange method and its application. Background technique [0002] The hot water storage tank is an important equipment for the heat storage system in the heat supply field. It uses the difference in peak and valley electricity prices to heat the water to a certain temperature during the period of low electricity consumption, so that the heat is stored in the water in the form of sensible heat. The heat in the water is released and used rationally during the period; the heat load can also be adjusted, which has the advantages of peak-shaving and valley-filling, saving and emission reduction. The common heat storage tank maintains good temperature stratification in the water tank when releasing heat, avoids mixing of supply and return water, and reduces the temp...

AI Technical Summary

Problems solved by technology

[0004] (1) However, due to the density difference between cold and hot water during heat storage, the mixing degree of cold and hot water is low, the heating speed is slow, the heat storage time is prolonged, and the energy storage efficiency is low

[0005] (2) In the prior art, the water temperature stratification effect of the heat storage tank provided is poor, which makes the heat release effect poor

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