Device and method for utilizing hydrated salt phase-change material to stabilize supercooling energy storage device and application

Abstract

The invention belongs to the field of application of novel environment-friendly high-efficiency energy storage technology, and particularly relates to a device and a method for utilizing a hydrated salt phase-change material to stabilize a supercooling energy storage device and application. The method includes heating hydrated salt crystals in summer until being completely melted and having a certain superheat degree, and injecting superheat liquid into a circular-arc chamfering or oval-arc chamfering flat cuboid container with a smooth inner wall for sealing; standing in an indoor environment, stably storing the phase-change material in the container in a supercooling liquid form for a long time, storing most of melting heat, and applying mechanical vibration, an electric field, a magnetic field, ultrasonic waves or local low temperature on the device to trigger the device for crystallization energy releasing when heat supply is needed in winter. Compared with conventional cross-season energy storage systems, the energy storage device has the advantages being smaller in heat-radiating loss and higher in energy storage efficiency in the process of energy storage, and being simple to manufacture and low in cost; the used phase-change material is large in energy storage density, and is applied in a cross-season energy storage system, size of the energy storage device is greatly reduced, initial cost is saved, and convenience in control is realized.

Description

technical field [0001] The invention belongs to the application field of new environment-friendly and high-efficiency energy storage technology, and in particular relates to a stabilized supercooled energy storage device, method and application using a hydrated salt phase change material. Background technique [0002] With the continuous development of the economies of various countries and the continuous improvement of people's living standards, the demand for energy has experienced an unprecedented high growth trend. However, the utilization of a large amount of conventional fossil energy will result in the emission of greenhouse gases and pollute the environment. In order to reduce the dependence on conventional energy and realize the energy sustainable development strategy, the development and utilization technology of renewable energy such as solar energy has gradually become the focus of attention of various countries. [0003] Solar energy has obvious advantages such...

AI Technical Summary

Problems solved by technology

However, most hydrated salt phase change materials have serious shortcomings of supercooling and phase separation, resulting in low heat transfer efficiency and poor thermal cycle stability.

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