熔融盐显热蓄热技术的研究与应用进展  

Research and application of molten salts for sensible heat storage

作　　者：吴玉庭[1] 任楠[1] 马重芳[1] 

机构地区：[1]北京工业大学环境与能源工程学院,传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,北京100124

出　　处：《储能科学与技术》2013年第6期586-592,共7页Energy Storage Science and Technology

基　　金：国家重点基础研究发展计划(973)项目(2010CB227103);北京市科技计划项目(D121100001012002)

摘　　要：熔融盐具有液体温度范围宽、黏度低、流动性能好、蒸汽压小、对管路承压能力要求低、相对密度大、比热容高、蓄热能力强、成本较低等诸多优点,已成为一种公认的良好的中高温传热蓄热介质。本文对熔融盐显热蓄热技术原理和发展现状进行了简要概述,包括熔融盐的种类,熔融盐显热蓄热技术的原理、关键技术、研发现状及其在太阳能热发电和间歇性余热利用中的应用。认为开展高温熔融盐传热蓄热介质制备、热性能表征和熔融盐流动与传热性能研究,进而完善整个熔融盐蓄热系统,提高蓄热效率,降低管路腐蚀性,提高系统可靠性仍将是未来熔融盐蓄热技术的研究重点。Mixed molten salts are considered as promising media for both heat transfer and thermal energy storage because of several advantages including wide applicable temperature range, low viscosity, good fluidity, low vapor pressure, relatively high density and heat capacity and low cost, This paper outlines the principle of the use of molten salts as sensible heat storage materials and provide a review of the state-of-the-art development the materials. Particular attention is drawn on the type and characteristic of commonly molten salt, technical principle, development status of key technologies such as molten salt heat storage medium and equipment and application in solar thermal power generation and intermittent of waste heat utilization. It is concluded that preparing and researching thermal or flowing properties high temperature molten salt, perfevting the molten salt heat storage system, improving heat storage efficiency, weakening corrosivity and improving the system reliability are among the important aspects for future research.

关 键 词：熔融盐 显热 蓄热 储能 

分 类 号：TK513[动力工程及工程热物理—热能工程]