化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2014年
10期
2676-2680
,共5页
黄雪%崔英德%张步宁%冯光炷%尹国强
黃雪%崔英德%張步寧%馮光炷%尹國彊
황설%최영덕%장보저%풍광주%윤국강
脂肪酸%相变%材料%传热%液相渗漏%储热
脂肪痠%相變%材料%傳熱%液相滲漏%儲熱
지방산%상변%재료%전열%액상삼루%저열
fatty acids%phase change%materials%heat transfer%liquid phase leakage%heat thermal storage
能源的大量消耗使得储热技术研究越来越重要,相变材料作为一种有效的潜热储热材料在潜热储热系统中占据重要地位。脂肪酸相变材料因其来源广泛,具有共熔和共结晶特点、相变焓高和清洁可再生等优点受到广泛关注,但脂肪酸相变材料也存在热导率低和固-液相转变时液相渗漏等缺点。本文对国内外脂肪酸相变材料的传热和渗漏进行了综述与讨论,就热导率低的缺点提出了强化传热的方式,通过建立传热模型研究其导热行为并预测传热系数;就渗漏问题提出4种有效解决液相渗漏的方法,分析了各种方法的优缺点。对节能环保要求越来越高的今天,解决脂肪酸相变材料的传热和渗漏已成为热点问题。最后对脂肪酸相变材料的发展前景进行展望。
能源的大量消耗使得儲熱技術研究越來越重要,相變材料作為一種有效的潛熱儲熱材料在潛熱儲熱繫統中佔據重要地位。脂肪痠相變材料因其來源廣汎,具有共鎔和共結晶特點、相變焓高和清潔可再生等優點受到廣汎關註,但脂肪痠相變材料也存在熱導率低和固-液相轉變時液相滲漏等缺點。本文對國內外脂肪痠相變材料的傳熱和滲漏進行瞭綜述與討論,就熱導率低的缺點提齣瞭彊化傳熱的方式,通過建立傳熱模型研究其導熱行為併預測傳熱繫數;就滲漏問題提齣4種有效解決液相滲漏的方法,分析瞭各種方法的優缺點。對節能環保要求越來越高的今天,解決脂肪痠相變材料的傳熱和滲漏已成為熱點問題。最後對脂肪痠相變材料的髮展前景進行展望。
능원적대량소모사득저열기술연구월래월중요,상변재료작위일충유효적잠열저열재료재잠열저열계통중점거중요지위。지방산상변재료인기래원엄범,구유공용화공결정특점、상변함고화청길가재생등우점수도엄범관주,단지방산상변재료야존재열도솔저화고-액상전변시액상삼루등결점。본문대국내외지방산상변재료적전열화삼루진행료종술여토론,취열도솔저적결점제출료강화전열적방식,통과건립전열모형연구기도열행위병예측전열계수;취삼루문제제출4충유효해결액상삼루적방법,분석료각충방법적우결점。대절능배보요구월래월고적금천,해결지방산상변재료적전열화삼루이성위열점문제。최후대지방산상변재료적발전전경진행전망。
With increasing energy consumption,energy storage techniques are becoming more and more important. The phase change materials (PCM),which are efficient latent heat thermal storage materials,play an important role in the latent heat thermal storage system. Fatty acids PCM because of its rich resources,characteristics of eutectic and cocrystallization,large latent heat,cleanness and renewableness have attracted extensive attention. However , poor heat conductivity , leakage in solid-liquid phase change are the disadvantages. In this paper,fatty acids PCM heat transfer and leakage are reviewed and heat transfer enhancement to resolve the shortcoming of low thermal conductivity is discussed. A thermal heat transfer model is established and the behavior of heat transfer is predicted,and coefficient on leakage issues raised. Four solutions of liquid leakage are proposed and their advantages and disadvantages are analyzed. The prospects of fatty acids PCM are presented.