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

Phase-change heat storage medium as well as preparation and application thereof

A phase change heat storage and medium technology, which is applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of thermal energy fluctuation, contradiction between supply and demand, and low price.

Inactive Publication Date: 2015-12-09
SHANGHAI JIAO TONG UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a phase-change heat storage medium and its preparation and application, which has good heat storage capacity, can effectively solve the problem of thermal energy fluctuations, or the contradiction between supply and demand in time and space, and is cheap and has cost advantages

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
  • Phase-change heat storage medium as well as preparation and application thereof
  • Phase-change heat storage medium as well as preparation and application thereof
  • Phase-change heat storage medium as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment relates to the preparation process of heat storage medium, specifically as follows:

[0027] Take 32% Ca(NO 3 ) 2 4H 2 O (analytically pure, produced by Sinopharm Chemical Reagent Co., Ltd.) and 24% NaNO 3 (analytically pure, produced by Sinopharm Chemical Reagent Co., Ltd.) and 44% KNO 3 (analytically pure, produced by Sinopharm Chemical Reagent Co., Ltd.), pour it into a ceramic crucible, put it into an electric furnace and heat it to 50 ° C, at this time Ca(NO 3 ) 2 4H 2 O is completely melted and the NaNO 3 with KNO 3 Dissolve together to form a transparent and uniform liquid, stir to make it fully mixed. Then put it back into the electric furnace and heat it to 250°C, and keep it for 3 hours, so that the water is completely evaporated to dryness, and Ca(NO 3 ) 2 and NaNO 3 with KNO 3 mixed molten salt. The molten salt is cooled in a vacuum oven to obtain a co-crystal, that is, the heat storage medium.

[0028] This example relates to t...

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
phase transition temperatureaaaaaaaaaa
service temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to a phase-change heat storage medium and discloses a phase-change heat storage medium as well as a preparation and an application thereof. The phase-change heat storage medium comprises components in percentage by mass as follows: 32% of Ca(NO3)2, 24% of NaNO3 and 44% of KNO3. A method for preparing the phase change heat storage medium comprises steps of mixing, heating and cooling. The phase-change heat storage medium is used for a heat storage system adopting solar thermal power generation or a heat storage system adopting industrial waste heat recovery or a household heat storage device. The phase-change heat storage medium has better heat storage capability and excellent chemical stability, is low in price and can meet the demands of large-scale heat storage.

Description

technical field [0001] The invention relates to a new material in the heat storage field, in particular to a preparation method, properties and uses of a cheap and high-efficiency phase-change heat storage medium. Background technique [0002] With the development of human society, energy plays an increasingly important role in it. Due to the limitation of natural energy, people are required to save energy and improve the utilization rate of energy. Among them, heat storage is a key technology to solve the contradiction between supply and demand of energy demand and improve the effective utilization of energy. Heat storage is to store heat energy when it is not needed and release it when it is needed, so as to achieve the purpose of improving energy efficiency. Since the energy crisis, heat storage technology has emerged in developed countries and has been continuously developed. The further improvement of technical theories such as material science, aerospace, and engine...

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 Applications(China)
IPC IPC(8): C09K5/06
Inventor 赵长颖陈云宇徐治国
Owner SHANGHAI JIAO TONG UNIV
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