Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rare earth-magnesium metal hydride high temperature heat storage materials for solar thermal power generation

A technology of solar heat collection and heat storage materials, which is applied in the field of heat storage materials for solar heat collection and power generation. It can solve the problems of low working temperature, high platform pressure, and poor kinetic performance, and achieve improved activation performance and fast hydrogen absorption rate. , Good effect of hydrogen absorption kinetics

Inactive Publication Date: 2016-11-30
UNIV OF SCI & TECH BEIJING
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of Mg heat storage materials are low operating temperature, high plateau pressure, and poor kinetic performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rare earth-magnesium metal hydride high temperature heat storage materials for solar thermal power generation
  • Rare earth-magnesium metal hydride high temperature heat storage materials for solar thermal power generation
  • Rare earth-magnesium metal hydride high temperature heat storage materials for solar thermal power generation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The purity of the bulk metals used to prepare the samples was higher than 99.8%, and two alloys (Ce 1-y A y )Mg x (where A=Ti, x=12, y=0.1) and (Ce 1-m A m )Mg x (wherein A=Mn, x=12, m=0.2). The prepared alloy is crushed by mechanical pulverization, passed through a 200-mesh sieve, and the obtained 200-mesh powder is stored in a glove box.

[0015] Specimens must be conditioned prior to testing. Take by weighing several gram powders and put into reactor, vacuumize after sealing (vacuum degree is higher than 10 -2 Pa), and then filled with hydrogen at a certain pressure, and then evacuated and filled with hydrogen, repeated 2 to 3 times to clean the pipeline. Heating with a precise temperature-controlled electric furnace and strictly controlling the temperature of the reactor. When it reaches 400°C, fill it with pure hydrogen (3-6MPa) at a certain pressure. . The activation treatment of hydrogen absorption and desorption for many times stabilizes the particle si...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
latent heataaaaaaaaaa
Login to View More

Abstract

The invention provides a rare earth-magnesium metal hydride high-temperature heat storage material for solar heat collection for power generation. The rare earth-magnesium metal hydride high-temperature heat storage material for solar heat collection for power generation is characterized in that the component of the material is (Ce<1-y>A<y>)Mg<x>, wherein A is one, two or more than two of Mn, Ca, Ti and B, x is greater than or equal to 7 and smaller than or equal to 17, and y is greater than zero and smaller than or equal to 0.2. Compared with the existing pure magnesium heat storage material, the novel rare earth-magnesium heat storage material provided by the invention has the excellent properties that the activation property is remarkably improved and the activation time is obviously shortened; the hydrogen absorption kinetic property is very good and the hydrogen absorption speed is fast; the hydrogen desorption kinetic property is also excellent, the material provided by the invention can be guaranteed to freely absorb hydrogen during use under certain conditions and the goal of energy storage is achieved; the hydrogen absorption platform pressure of the material provided by the invention is lower than that of the existing pure magnesium heat storage material at the same temperature, the maximum hydrogen absorption amount at 400 DEG C is close to that of MgH2 and the platform hysteresis is not great; the cyclic reversibility is very good.

Description

technical field [0001] The invention relates to a heat storage material for solar heat collection and power generation, in particular to a novel rare earth-magnesium metal hydride heat storage material. Background technique [0002] Solar thermal power generation is an important clean energy. The sunlight is focused to the heat collector through the reflector, and the heat transfer medium is heated to exchange heat with high-pressure water to generate high-temperature and high-pressure water vapor, which drives the steam turbine to generate electricity. The principle of solar thermal power generation is the same as that of traditional thermal power generation, so it can be integrated with traditional thermal power plants, and the electricity can be directly connected to the grid. Heat storage is an important part of the solar thermal power generation system, which plays an important role in the power station's all-weather continuous and stable power generation, power shaving...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/06C22C1/02C22C1/04C09K5/16
Inventor 李平李杨曲选辉路新秦明礼章林
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com