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Solar high-temperature thermochemical coupling phase-change reactor

A solar thermal and reactor technology, which is applied to solar thermal collectors, solar thermal energy, solar thermal collectors in specific environments, etc. Heat transfer performance, effect of improving reaction efficiency

Active Publication Date: 2012-10-24
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hot plate has been applied first in the field of high energy density electronic components, but it has not been reported in the field of high temperature heat absorption or reaction in solar energy

Method used

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  • Solar high-temperature thermochemical coupling phase-change reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Solar high temperature thermochemical coupled phase change reactor (structural schematic diagram as figure 1 , figure 2 shown), consists of CPC secondary concentrator 1, quartz glass window 2, heat plate 6, heat pipe 7 and cylinder 9; reactor cylinder 9 has an inner wall 12, an insulation layer 13, and an outer wall 14 from inside to outside. One side of the quartz glass window 2 is preceded by a flange-connected CPC concentrator 1, and the other side forms a heat-absorbing chamber 3 with the heat-absorbing side of the heat plate 6 and the inner wall 12 of the cylinder 9, which is located in the heat-absorbing chamber The cylinder side on the 3 is provided with an axisymmetric cooling medium inlet 4 and cooling medium outlet 5; the heat pipe 7 is welded on the reaction side of the hot plate 6, and the working chamber inside the hot plate 6 and the working chamber inside the heat pipe 7 are connected as A whole, coupled as a "special-shaped heat pipe", the material of ...

Embodiment 2

[0032]On the basis of Example 1, the quartz glass window 2 is cooled by the cooling medium argon gas passed into the heat-absorbing chamber 3; the ratio of the height of the axial cylinder of the heat-absorbing chamber 3 to the height of the axial cylinder of the entire reactor is 1 / 20 The material of the hot plate 6 and the heat pipe 7 is tungsten, the working medium in the working chamber is silver, and the liquid-absorbing core is a metal powder sintered liquid-absorbent core; the shape of the heat plate 6 is spherical; the shape of the heat pipe 7 is a cylinder, and there are 6 pieces , the arrangement on the reaction side of the hot plate 7 is a circular distribution; the ratio of the axial height of the hot plate 6 to the axial height of the heat pipe 7 is 1 / 10; all walls constituting the reaction chamber 8 in the reactor are coated with metal base ceramic coating; the height-to-diameter ratio of the cylinder part on the reaction chamber 8 is 3:1, and the chemical reactio...

Embodiment 3

[0034] On the basis of Example 1, the quartz glass window 2 is cooled by the cooling medium helium gas that passes into the heat-absorbing chamber 3; the ratio of the height of the axial cylinder of the heat-absorbing chamber 3 to the height of the axial cylinder of the entire reactor is not less than 1 / 10; the material of the hot plate 6 and the heat pipe 7 is niobium, the working fluid in the working chamber is lithium, and the liquid-absorbing core is a groove liquid-absorbent core; the shape of the heat plate 6 is an ellipsoid; the shape of the heat pipe 7 is a cylinder with 4 Roots, arranged in a square on the reaction side of the hot plate 6; the ratio of the axial height of the hot plate 6 to the axial height of the heat pipe 7 is not less than 1 / 3; all walls forming the reaction chamber 8 in the reactor are coated with Silicide coating; the height-to-diameter ratio of the cylinder part on the reaction chamber 8 is 80:1, and the chemical reaction involved in it is the d...

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Abstract

The invention relates to a solar high-temperature thermochemical coupling phase-change reactor. The solar high-temperature thermochemical coupling phase-change reactor comprises a CPC (Card Programmed Calculator) secondary optical collector, a quartz glass window, a heat plate, a heat pipe and a cylinder body, wherein a main body is coupled by the heat plate and the heat pipe, the heat plate is positioned at a photothermal conversion side, the heat pipe extending out of the heat plate is positioned at a reaction side, and the heat plate and the heat pipe are communicated into an integer; a heat absorption cavity is formed by the quartz glass window, the heat plate positioned at a heat absorption side and the inner wall of the cylinder body; and a reaction cavity is formed by the heat plate positioned at the reaction side, the heat pipe and the cylinder body. Sunlight is converged and then shines on the heat absorption side of the heat plate, optical energy is converted into heat energy, the heat energy is transferred to an internal working medium through the heat absorption side of the heat plate, the internal working medium transfers heat to the heat plate positioned at the reaction side and the wall surface of the heat pipe through phase-change heat transfer, and a reactant absorbs the heat emitted from the wall surface for chemical reaction. The solar high-temperature thermochemical coupling phase-change reactor can be used for intermediate-high temperature thermal chemical reaction, i.e. the pyrolysis or the reduction of metallic oxides, and the like, prevents the sintering or the damage caused by local overheating of the surface of the heat absorption side, reduces the temperature gradient of the reaction cavity and increase the efficiency and the stability.

Description

technical field [0001] The invention relates to a solar thermochemical coupling phase change reactor, which belongs to the interdisciplinary fields of solar medium and high temperature heat utilization, chemical process machinery, engineering thermophysics and chemical engineering. Background technique [0002] Solar energy is inexhaustible and inexhaustible, and its efficient development and utilization is one of the main ways to achieve green and sustainable development. The utilization of solar energy mainly includes photovoltaic power generation, photocatalysis, medium and low temperature heat utilization, and medium and high temperature heat utilization. The high temperature thermochemical process of solar energy is to use the high temperature generated by solar concentration to drive the thermochemical reaction cycle, and to modify the chemical energy of solar energy and energetic resources (fossil energy such as coal and petroleum, clean and renewable resources such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/12F24J2/20F24J2/32F24J2/46F24S10/50F24S10/95
CPCY02E10/44F24S20/20Y02E10/40
Inventor 朱跃钊马婷婷陈海军王银峰杨丽
Owner NANJING UNIV OF TECH
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