Phase change heat accumulation system for generating steam directly and preparation method of phase change heat accumulation agent

A technology of phase change heat storage and steam, which is applied in the direction of steam generation method using heat carrier, heat storage equipment, indirect heat exchanger, etc., to achieve the effects of high heat transfer efficiency, improved efficiency and low cost
CN102777874AInactive Publication Date: 2012-11-14ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Publication Date
2012-11-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a phase change heat accumulation system for generating steam directly and a preparation method of a phase change heat accumulation agent. A phase change material is enhanced with graphite foam, and is absorbed in a porous medium of the graphite foam, so that a binary eutectic salt / graphite foam material is prepared and is used as a composite phase change material of a heat accumulation device, the composite phase change material is high in heat conduction coefficient, therefore under the same design condition, the phase change heat accumulation system provided by the invention is applied to systems of a focusing type solar thermal power generation system, an industrial waste heat recovery system and the like, and has the characteristics of high heat transfer efficiency, small volume, low cost and the like. In addition, the phase change heat accumulation system for generating steam directly can flexibly adopt a parallel connection or serial connection mode according to the temperature of high-temperature waste heat steam and the requirement of a steam user; and during serial connection, the binary eutectic salt / graphite foam composite phase change material can be combined in a cascaded manner according to a melting point, thus the efficiency of an energy accumulation system is increased, and the energy can be greatly accumulated.
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Description

Technical field:

[0001] The invention belongs to the technical field of heat storage devices, and in particular relates to a phase-change heat storage system for directly generating steam using a high-temperature composite eutectic salt as a heat storage material and a preparation method for a phase-change heat storage agent. Background technique:

[0002] Concentrating solar thermal power generation (CSP), as a new technology with great potential for developing new energy and renewable energy, has made significant progress and breakthroughs in Europe and the United States, and has become the most promising power generation method besides wind energy. CSP refers to a technology that gathers sunlight and converts it into high-temperature thermal energy of a working fluid, and then converts it into electrical energy through a heat engine. Since the solar energy supply is unstable and discontinuous, and the thermal power generation system needs to operate stably, in addition ...

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
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