Phase-change high-capacity storage and exchange device

Abstract

The invention discloses a phase-change high-capacity storage and exchange device, and belongs to the field of solar heat utilization or energy storage power stations. The phase-change high-capacity storage and exchange device is a heat storage and heat exchange all-in-one device, and is characterized in that a phase-change heat-storage work medium is filled in a heat insulation cavity, a heat exchanger filled with a working work medium is embedded in the phase-change heat-storage work medium, and heat conduction devices filled with a heat conduction work medium and made of capillary tube groups or coil tubes are distributed in the phase-change work medium; and when solar energy or redundant electricity is used for heating the heat conduction work medium to transfer heat to the phase-change work medium to melt the phase-change work medium, and the heat is stored in the phase-change work medium in a latent heat mode so as to be supplied to the working work medium for use without sun light or without electricity. The phase-change high-capacity storage and exchange device has the advantages of great heat storage capacity, small volume, little material consumption, low cost and the like.

Description

Background technique [0001] Solar thermal utilization has many advantages, but one of its biggest disadvantages is its intermittent and uncertainties. Therefore, whether it is solar thermal power generation or solar thermal power generation for short, or using solar energy for heating or supplying steam to industry, heat storage is required , the current heat storage methods are generally sensible heat storage. Most of the high-temperature heat storage uses molten salt or heat transfer oil, and solid heat storage such as concrete is also used. These sensible heat storage methods use a lot of materials, are bulky, and cost a lot. High, and the molten salt is highly corrosive, the molten salt and the heat transfer oil are easy to age, and they need to be replaced after a certain period of time, and when the temperature is too high, they are easy to decompose and denature. Contents of the invention [0002] To solve these problems, the technology of the present invention is to ...

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Problems solved by technology

[0001] Solar thermal utilization has many advantages, but one of its biggest disadvantages is its intermittent and uncertainties. Therefore, whether it is solar thermal power generation or solar thermal power generation for short, or using solar energy for heating or supplying steam to industry, heat storage is required , the current heat storage methods are generally sensible heat storage. Most of the high-temperature heat storage uses molten salt or heat transfer oil, and solid heat storage such as concrete is also used. These sensible heat storage methods use a lot of materials, are bulky, and cost a lot. High, and the molten salt is highly corrosive, the molten salt and the heat transfer oil are easy to age, and they need to be replaced after a certain period of time, and they are easy to decompose and denature when the temperature is too high

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