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

A technology of phase change materials and energy storage devices, applied in heat storage equipment, heat exchanger types, lighting and heating equipment, etc., can solve problems such as low heat transfer efficiency, supercooling and phase separation, and poor thermal cycle stability. Achieve the effect of improving energy storage efficiency, large latent heat, and reducing heat loss

Inactive Publication Date: 2014-04-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

However, most hydrated salt phase change materials have serious shortcomings of supercooling an

Method used

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

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Embodiment 1

[0033]The invention provides a novel environment-friendly and high-efficiency energy storage device and method with small heat dissipation loss, high energy storage efficiency, simple device processing and low cost. In summer, solar hot water is used to heat and melt the hydrated salt phase change material crystals. After the melting is complete and has a certain degree of superheat, it is injected into a flat cuboid container with a smooth inner wall, and there is no disturbance in the room (mechanical vibration, electric field, magnetic field, local Cooling under ambient conditions such as low temperature or ultrasonic, etc., the final phase change material exists in the energy storage device stably for a long time in a supercooled liquid state, storing all the heat of fusion. Apply this technology to a cross-seasonal energy storage system. In the summer when solar energy is abundant, the hydrated salt material is used to melt and store energy. Vibration, ultrasound, electri...

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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...

Claims

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Application Information

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IPC IPC(8): F28D20/02
CPCY02E60/145F28D20/02Y02E60/14
Inventor 周国兵韩玉维王雪皎
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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