A solar high temperature energy storage and heat exchange heat absorber
A technology of solar energy and heat absorber, which is applied in the field of solar high-temperature heat-absorbing equipment, can solve the problem of restricting the applicability of solar high-temperature heat conversion technology, not fully considering the distribution characteristics of concentrated solar heat flux density, solar high-temperature energy storage and heat exchange and heat absorption Complicated device design schemes and other issues, to achieve good energy storage and heat release effect, enhanced high-temperature convection heat absorption effect, and small high-temperature thermal stress
Active Publication Date: 2020-05-19
FUJIAN UNIV OF TECH
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Problems solved by technology
Due to the key technical problems of heat transfer in solar high-temperature heat storage and gasification enhanced heat transfer, and these problems are coupled with the heat flux distribution characteristics of concentrated solar energy, the design of solar high-temperature energy storage and heat exchange heat sinks is very complicated.
[0004] Existing solar heat absorption or energy storage devices are only designed and analyzed from a certain aspect of solar high-temperature energy storage or high-efficiency heat conversion, without fully considering the distribution characteristics of concentrated solar heat flux. The unit and gas working fluid are combined to enhance heat transfer, which restricts the applicability of solar high temperature heat conversion technology
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Embodiment 1
[0022] Such as figure 1 As shown, the present invention proposes a solar high-temperature energy storage and heat exchange heat absorber with a coupled structure of a cylinder and a convex hull, which includes a heat-absorbing cylinder with an inlet for collecting sunlight, and a heat-absorbing channel for the working fluid on the inner side of the cylinder wall (the side where the sunlight is collected), and the outer side (the side of the working medium channel) are covered with several energy storage convex hulls. The convex hull is in the shape of a semi-ellipsoid, the convex hull shell is connected with the cylinder wall, and the closed cavity formed by the convex hull shell and the cylinder wall is filled with phase change materials.
[0023] In the peak region of the concentrated solar heat flux distribution, the diameter of the convex hull increases and the spacing decreases, absorbing more concentrated solar energy.
[0024] Its working principle is to gather sunligh...
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The invention discloses a solar high-temperature energy storage and heat transfer heat absorber comprising a first heat absorbing cylinder. One end of the heat absorbing cylinder is sealed. The otherend of the heat absorbing cylinder is provided with a sunlight gathering inlet. The inner wall and the outer wall of the heat absorbing cylinder are both fully provided with convex hull heat storage devices. Each convex hull heat storage device comprises a convex hull shell fixed to the heat absorbing cylinder. Sealed cavities constituted by the convex hull shell and the heat absorbing cylinder store phase-change heat storage materials. The outer side of the heat absorbing cylinder is a working medium heat-absorbing channel which is connected with a working medium inlet and a working medium outlet.
Description
technical field [0001] The invention belongs to the field of solar high-temperature heat-absorbing equipment, in particular to a solar high-temperature energy storage and heat-exchanging heat absorber. Background technique [0002] The solar high-temperature energy storage and heat exchange composite structure heat absorber is an important way to improve the system compactness, reduce the system quality, reduce the technology cost, and promote the development of new energy and spacecraft technology. [0003] In the process of high-temperature application of space solar energy (thermal propulsion or thermal power generation), it is necessary to configure an energy storage system to meet the requirements of doing work in the orbital shadow area. However, limited by the mass of the spacecraft, it is best to integrate the solar heat absorber and heat storage (energy) device to reduce the system mass and cost. Due to the key technical problems of heat transfer in solar high-temp...
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IPC IPC(8): F24S60/10F24S70/12F24S70/16
CPCY02E10/40
Inventor 戴贵龙谢林毅邱金友池兰杜晓瑞
Owner FUJIAN UNIV OF TECH