Hydrated salt phase separation inhibition system

Abstract

The invention discloses a hydrated salt phase separation inhibition system. The system comprises a heat storage device and a liquid medium layer composed of a liquid medium. The heat storage device comprises a circulating pipe, an inner container filled with a hydrated salt phase change material, and a jet flow spray head arranged at the bottom of the inner container. The melting point and densityof the liquid medium are lower than those of the hydrated salt phase change material, and the boiling point is higher than the highest heat storage temperature of the heat storage device; the liquidmedium layer covers the surface of the hydrated salt phase change material; and the circulating pipe is connected with the jet flow spray head. When the hydrated salt phase change material is in a heat release stage and the temperature is between the freezing point temperature and the heat release starting temperature, the circulating pipe intermittently conveys the liquid medium to the jet flow spray head and then sprays the liquid medium out, so that a forced turbulent flow dispersion effect is formed in the hydrated salt phase change material. Under the condition of not adding any additive,the recyclable phase separation inhibition of the hydrated salt phase change material is effectively realized.

Description

technical field [0001] The invention relates to the technical field of phase change energy storage, in particular to a hydrated salt phase separation suppression system. Background technique [0002] A phase change heat storage device is a device that uses phase change materials to absorb / release a large amount of latent heat during melting / solidification for heat storage and utilization. Its core is the stability and thermal performance parameters of phase change materials. This device has been widely used It is used in power system peak regulation, solar energy utilization, aerospace, waste heat recovery, heating and air conditioning and household appliances industry and other fields. Among the existing phase-change energy storage materials, inorganic hydrated salts are an important class of phase-change materials, which have the advantages of wide application range, large thermal conductivity, large phase-change latent heat, low toxicity, and low price, so they have been ...

AI Technical Summary

Problems solved by technology

However, experimental analysis and practical application show that adding a thickener to the matrix phase-change energy storage material will lead to a decrease in the thermal conductivity of the matrix phase-change energy storage material and a decrease in the rate of heat storage and release. The heat storage density of the thermal material also decreases

After a certain period of use, the thickener in the matrix material will fail under repeated temperature shocks, thus losing the effect of phase separation inhibition, and eventually leading to the failure of the entire heat storage device

Images